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• Transactions in LINQ to SQL applications

  - by nikolaosk

  In this post I would like to talk about LINQ to SQL and transactions.When I have a LINQ to SQL class I always get asked this question, "How does LINQ treat Transactions?". When we use the DeleteOnSubmit() method or the InsertOnSubmit() method, all of those commands at some point are translated into T-SQL commands and then are executed against the database. All of those commands live in transactions and they follow the basic rules of transaction processing. They do succeed together or fail together...(read more)

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• Achieving NHibernate Nested Transactions Behavior

  - by jfneis

  Hi all, I'm trying to achieve some kind of nested transaction behavior using NHibernate's transaction control and FlushMode options, but things got a little bit confusing after too much reading, so any confirmation about the facts I list below will be very usefull. What I want is to open one big transaction that splits in little transactions. Imagine the following scenario: TX1 opens a TX and inserts a Person's record; TX2 opens a TX and updates this Person's name to P2; TX2 commits; TX3 opens a TX and updates this Person's name to P3; TX3 rollbacks; TX1 commits; I'd like to see NH sending the INSERT and the TX2 UPDATE to the database, just ignoring what TX3, as it was rolled back. I tried to use FlushMode = Never and only flushing the session after the proper Begins/Commits/Rollbacks have been demanded, but NH always update the database with the object's final state, independent of commits and rollbacks. Is that normal? Does NH really ignores transactional control when working with FlushMode = Never? I've also tried to use FlushMode = Commit and openning the nested transactions, but I discovered that, because ADO.NET, the nested transactions are, actually, always the same transaction. Note that I'm not trying to achieve a "all or nothing" behavior. I'm looking more to a savepoint way of working. Is there a way to do that (savepoints) with NH? Thank you in advance. Filipe

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• System.InvalidOperationException compiling ASP.NET app on Mono

  - by Radu094

  This is the error I get when I start my ASP.NET application in Mono: System.InvalidOperationException: The process must exit before getting the requested information. at System.Diagnostics.Process.get_ExitCode () [0x00044] in /usr/src/mono-2.6.3/mcs/class/System/System.Diagnostics/Process.cs:149 at (wrapper remoting-invoke-with-check) System.Diagnostics.Process:get_ExitCode () at Mono.CSharp.CSharpCodeCompiler.CompileFromFileBatch (System.CodeDom.Compiler.CompilerParameters options, System.String[] fileNames) [0x001ee] in /usr/src/mono-2.6.3/mcs/class/System/Microsoft.CSharp/CSharpCodeCompiler.cs:267 at Mono.CSharp.CSharpCodeCompiler.CompileAssemblyFromFileBatch (System.CodeDom.Compiler.CompilerParameters options, System.String[] fileNames) [0x00011] in /usr/src/mono-2.6.3/mcs/class/System/Microsoft.CSharp/CSharpCodeCompiler.cs:156 at System.CodeDom.Compiler.CodeDomProvider.CompileAssemblyFromFile (System.CodeDom.Compiler.CompilerParameters options, System.String[] fileNames) [0x00014] in /usr/src/mono-2.6.3/mcs/class/System/System.CodeDom.Compiler/CodeDomProvider.cs:119 at System.Web.Compilation.AssemblyBuilder.BuildAssembly (System.Web.VirtualPath virtualPath, System.CodeDom.Compiler.CompilerParameters options) [0x0022f] in /usr/src/mono-2.6.3/mcs/class/System.Web/System.Web.Compilation/AssemblyBuilder.cs:804 at System.Web.Compilation.AssemblyBuilder.BuildAssembly (System.Web.VirtualPath virtualPath) [0x00000] in /usr/src/mono-2.6.3/mcs/class/System.Web/System.Web.Compilation/AssemblyBuilder.cs:730 at System.Web.Compilation.BuildManager.GenerateAssembly (System.Web.Compilation.AssemblyBuilder abuilder, System.Web.Compilation.BuildProviderGroup group, System.Web.VirtualPath vp, Boolean debug) [0x00254] in /usr/src/mono-2.6.3/mcs/class/System.Web/System.Web.Compilation/BuildManager.cs:624 at System.Web.Compilation.BuildManager.BuildInner (System.Web.VirtualPath vp, Boolean debug) [0x0011c] in /usr/src/mono-2.6.3/mcs/class/System.Web/System.Web.Compilation/BuildManager.cs:411 at System.Web.Compilation.BuildManager.Build (System.Web.VirtualPath vp) [0x00050] in /usr/src/mono-2.6.3/mcs/class/System.Web/System.Web.Compilation/BuildManager.cs:356 at System.Web.Compilation.BuildManager.GetCompiledType (System.Web.VirtualPath virtualPath) [0x0003a] in /usr/src/mono-2.6.3/mcs/class/System.Web/System.Web.Compilation/BuildManager.cs:803 at System.Web.Compilation.BuildManager.CreateInstanceFromVirtualPath (System.Web.VirtualPath virtualPath, System.Type requiredBaseType) [0x0000c] in /usr/src/mono-2.6.3/mcs/class/System.Web/System.Web.Compilation/BuildManager.cs:500 at System.Web.UI.PageParser.GetCompiledPageInstance (System.String virtualPath, System.String inputFile, System.Web.HttpContext context) [0x0001c] in /usr/src/mono-2.6.3/mcs/class/System.Web/System.Web.UI/PageParser.cs:161 at System.Web.UI.PageHandlerFactory.GetHandler (System.Web.HttpContext context, System.String requestType, System.String url, System.String path) [0x00000] in /usr/src/mono-2.6.3/mcs/class/System.Web/System.Web.UI/PageHandlerFactory.cs:45 at System.Web.HttpApplication.GetHandler (System.Web.HttpContext context, System.String url, Boolean ignoreContextHandler) [0x00055] in /usr/src/mono-2.6.3/mcs/class/System.Web/System.Web/HttpApplication.cs:1643 at System.Web.HttpApplication.GetHandler (System.Web.HttpContext context, System.String url) [0x00000] in /usr/src/mono-2.6.3/mcs/class/System.Web/System.Web/HttpApplication.cs:1624 at System.Web.HttpApplication+<Pipeline>c__Iterator2.MoveNext () [0x0075f] in /usr/src/mono-2.6.3/mcs/class/System.Web/System.Web/HttpApplication.cs:1259 I checked the source code indicated by the stacktrace, namely :CSharpCodeCompiler.cs:267 mcs.WaitForExit(); result.NativeCompilerReturnValue = mcs.ExitCode; //this throws the exception I have no ideea if this is a bug in Mono, or if my App is doing something it shoudn't. A simple "Hello World" application indicates that Mono is properly installed and working, It is just my app that is causing this exception to be thrown. Hoping some enlighted minds have more on the issue

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• Reliable test for MSDTC promoting transactions to distributed?

  - by Oded

  How can I reliably check that MSDTC has promoted a transaction to a distributed transaction, from .net code? Currently a co-worker is testing this by shutting down the coordinator on his machine - if an exception is thrown this is taken as evidence that an attempt to promote the transaction has occurred. Is this a valid test?

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• Designer issue in VS: Events cannot be set on the object passed to the event binding service ...

  - by serhio

  I have a little problem: the Winform control (that contains between others WPF) suddenly stopped to be displayed in Designer. Message: Events cannot be set on the object passed to the event binding service because a site associated with the object could not be located. Call Stack: at System.ComponentModel.Design.EventBindingService.EventPropertyDescriptor.SetValue(Object component, Object value) at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializeAttachEventStatement(IDesignerSerializationManager manager, CodeAttachEventStatement statement) at System.ComponentModel.Design.Serialization.CodeDomSerializerBase.DeserializeStatement(IDesignerSerializationManager manager, CodeStatement statement) Where could be the problem? InitializeComponent code Private Sub InitializeComponent() Dim resources As System.ComponentModel.ComponentResourceManager = New System.ComponentModel.ComponentResourceManager(GetType(PlanDeLigne)) Dim Appearance1 As Infragistics.Win.Appearance = New Infragistics.Win.Appearance() Dim Appearance2 As Infragistics.Win.Appearance = New Infragistics.Win.Appearance() Dim Appearance3 As Infragistics.Win.Appearance = New Infragistics.Win.Appearance() Dim Appearance4 As Infragistics.Win.Appearance = New Infragistics.Win.Appearance() Dim Appearance5 As Infragistics.Win.Appearance = New Infragistics.Win.Appearance() Dim Appearance6 As Infragistics.Win.Appearance = New Infragistics.Win.Appearance() Dim Appearance7 As Infragistics.Win.Appearance = New Infragistics.Win.Appearance() Dim Appearance8 As Infragistics.Win.Appearance = New Infragistics.Win.Appearance() Dim Appearance9 As Infragistics.Win.Appearance = New Infragistics.Win.Appearance() Dim Appearance10 As Infragistics.Win.Appearance = New Infragistics.Win.Appearance() Dim Appearance11 As Infragistics.Win.Appearance = New Infragistics.Win.Appearance() Dim Appearance12 As Infragistics.Win.Appearance = New Infragistics.Win.Appearance() Me.mnbMenu = New System.Windows.Forms.ToolStrip() Me.mncMode = New System.Windows.Forms.ToolStripComboBox() Me.mnbSeparator1 = New System.Windows.Forms.ToolStripSeparator() Me.mnbAdd = New System.Windows.Forms.ToolStripButton() Me.mnbDelete = New System.Windows.Forms.ToolStripButton() Me.mnbSeparator2 = New System.Windows.Forms.ToolStripSeparator() Me.mnbDropDownAction = New System.Windows.Forms.ToolStripDropDownButton() Me.mnbDropDownActionSens = New System.Windows.Forms.ToolStripMenuItem() Me.mnbDropDownActionSeparator1 = New System.Windows.Forms.ToolStripSeparator() Me.mnbDropDownActionDistances = New System.Windows.Forms.ToolStripMenuItem() Me.mnbDropDownActionSeparator2 = New System.Windows.Forms.ToolStripSeparator() Me.mnbDropDownActionArretsPhysiques = New System.Windows.Forms.ToolStripMenuItem() Me.mnbSeparator3 = New System.Windows.Forms.ToolStripSeparator() Me.mnbSelectionZoom = New System.Windows.Forms.ToolStripButton() Me.mnbCancelZoom = New System.Windows.Forms.ToolStripButton() Me.mnbSeparator4 = New System.Windows.Forms.ToolStripSeparator() Me.mnbParametrage = New System.Windows.Forms.ToolStripButton() Me.mncSPlacerArret = New System.Windows.Forms.ToolStripMenuItem() Me.mncSSeparator1 = New System.Windows.Forms.ToolStripSeparator() Me.mncSImage = New System.Windows.Forms.ToolStripMenuItem() Me.mncSDefinirLastArret = New System.Windows.Forms.ToolStripMenuItem() Me.mncSSeparator2 = New System.Windows.Forms.ToolStripSeparator() Me.mncSSupprimerArrets = New System.Windows.Forms.ToolStripMenuItem() Me.mncSInsererArret = New System.Windows.Forms.ToolStripMenuItem() Me.mncSSeparator3 = New System.Windows.Forms.ToolStripSeparator() Me.mncSInformations = New System.Windows.Forms.ToolStripMenuItem() Me.mncSSupprimerSegment = New System.Windows.Forms.ToolStripMenuItem() Me.mncSSeparator4 = New System.Windows.Forms.ToolStripSeparator() Me.mncSBatirTroncon = New System.Windows.Forms.ToolStripMenuItem() Me.mncTInformations = New System.Windows.Forms.ToolStripMenuItem() Me.mncTDistances = New System.Windows.Forms.ToolStripMenuItem() Me.mncTSeparator1 = New System.Windows.Forms.ToolStripSeparator() Me.mncTTempsDeParcours = New System.Windows.Forms.ToolStripMenuItem() Me.mncTSeparator2 = New System.Windows.Forms.ToolStripSeparator() Me.mncTCreerSensInverse = New System.Windows.Forms.ToolStripMenuItem() Me.mncTSeparator3 = New System.Windows.Forms.ToolStripSeparator() Me.mncTSupprimerTroncon = New System.Windows.Forms.ToolStripMenuItem() Me.mncTBatirItineraire = New System.Windows.Forms.ToolStripMenuItem() Me.mncIInformations = New System.Windows.Forms.ToolStripMenuItem() Me.mncISeparator1 = New System.Windows.Forms.ToolStripSeparator() Me.mncISupprimerItineraire = New System.Windows.Forms.ToolStripMenuItem() Me.SplitContainer = New System.Windows.Forms.SplitContainer() Me.ElementHost1 = New System.Windows.Forms.Integration.ElementHost() Me._StopsCanvas = New Keolis.ctlWpfPlanDeLigne.StopsCanvas() Me.lblTitreCreation = New Keolis.ctlComponents.Label() Me.Panel1 = New System.Windows.Forms.Panel() Me.btnOk = New Keolis.ctlComponents.Button() Me.btnAnnuler = New Keolis.ctlComponents.Button() Me.grdCreation = New Keolis.ctlWinGrid.WinGrid() Me.mnbMenu.SuspendLayout() CType(Me.SplitContainer, System.ComponentModel.ISupportInitialize).BeginInit() Me.SplitContainer.Panel1.SuspendLayout() Me.SplitContainer.Panel2.SuspendLayout() Me.SplitContainer.SuspendLayout() Me.Panel1.SuspendLayout() CType(Me.grdCreation, System.ComponentModel.ISupportInitialize).BeginInit() Me.SuspendLayout() ' 'mnbMenu ' Me.mnbMenu.GripStyle = System.Windows.Forms.ToolStripGripStyle.Hidden Me.mnbMenu.Items.AddRange(New System.Windows.Forms.ToolStripItem() {Me.mncMode, Me.mnbSeparator1, Me.mnbAdd, Me.mnbDelete, Me.mnbSeparator2, Me.mnbDropDownAction, Me.mnbSeparator3, Me.mnbSelectionZoom, Me.mnbCancelZoom, Me.mnbSeparator4, Me.mnbParametrage}) Me.mnbMenu.Location = New System.Drawing.Point(0, 0) Me.mnbMenu.Name = "mnbMenu" Me.mnbMenu.Size = New System.Drawing.Size(605, 25) Me.mnbMenu.TabIndex = 2 ' 'mncMode ' Me.mncMode.DropDownStyle = System.Windows.Forms.ComboBoxStyle.DropDownList Me.mncMode.Name = "mncMode" Me.mncMode.Size = New System.Drawing.Size(121, 25) Me.mncMode.ToolTipText = "Mode du plan de ligne" ' 'mnbSeparator1 ' Me.mnbSeparator1.AutoSize = False Me.mnbSeparator1.Name = "mnbSeparator1" Me.mnbSeparator1.Size = New System.Drawing.Size(20, 25) ' 'mnbAdd ' Me.mnbAdd.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Image Me.mnbAdd.Image = CType(resources.GetObject("mnbAdd.Image"), System.Drawing.Image) Me.mnbAdd.ImageTransparentColor = System.Drawing.Color.Magenta Me.mnbAdd.Name = "mnbAdd" Me.mnbAdd.Size = New System.Drawing.Size(23, 22) Me.mnbAdd.Text = "Création Tronçon / Itinéraire" ' 'mnbDelete ' Me.mnbDelete.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Image Me.mnbDelete.Image = CType(resources.GetObject("mnbDelete.Image"), System.Drawing.Image) Me.mnbDelete.ImageTransparentColor = System.Drawing.Color.Magenta Me.mnbDelete.Name = "mnbDelete" Me.mnbDelete.Size = New System.Drawing.Size(23, 22) Me.mnbDelete.Text = "Supprimer les éléments sélectionnés" ' 'mnbSeparator2 ' Me.mnbSeparator2.AutoSize = False Me.mnbSeparator2.Name = "mnbSeparator2" Me.mnbSeparator2.Size = New System.Drawing.Size(20, 25) ' 'mnbDropDownAction ' Me.mnbDropDownAction.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Image Me.mnbDropDownAction.DropDownItems.AddRange(New System.Windows.Forms.ToolStripItem() {Me.mnbDropDownActionSens, Me.mnbDropDownActionSeparator1, Me.mnbDropDownActionDistances, Me.mnbDropDownActionSeparator2, Me.mnbDropDownActionArretsPhysiques}) Me.mnbDropDownAction.Image = CType(resources.GetObject("mnbDropDownAction.Image"), System.Drawing.Image) Me.mnbDropDownAction.ImageTransparentColor = System.Drawing.Color.Magenta Me.mnbDropDownAction.Name = "mnbDropDownAction" Me.mnbDropDownAction.Size = New System.Drawing.Size(29, 22) Me.mnbDropDownAction.Text = "Action sur le plan de ligne" ' 'mnbDropDownActionSens ' Me.mnbDropDownActionSens.Checked = True Me.mnbDropDownActionSens.CheckOnClick = True Me.mnbDropDownActionSens.CheckState = System.Windows.Forms.CheckState.Checked Me.mnbDropDownActionSens.Name = "mnbDropDownActionSens" Me.mnbDropDownActionSens.Size = New System.Drawing.Size(222, 22) Me.mnbDropDownActionSens.Text = "Afficher le sens" ' 'mnbDropDownActionSeparator1 ' Me.mnbDropDownActionSeparator1.Name = "mnbDropDownActionSeparator1" Me.mnbDropDownActionSeparator1.Size = New System.Drawing.Size(219, 6) ' 'mnbDropDownActionDistances ' Me.mnbDropDownActionDistances.Checked = True Me.mnbDropDownActionDistances.CheckOnClick = True Me.mnbDropDownActionDistances.CheckState = System.Windows.Forms.CheckState.Checked Me.mnbDropDownActionDistances.Name = "mnbDropDownActionDistances" Me.mnbDropDownActionDistances.Size = New System.Drawing.Size(222, 22) Me.mnbDropDownActionDistances.Text = "Afficher les distances" ' 'mnbDropDownActionSeparator2 ' Me.mnbDropDownActionSeparator2.Name = "mnbDropDownActionSeparator2" Me.mnbDropDownActionSeparator2.Size = New System.Drawing.Size(219, 6) ' 'mnbDropDownActionArretsPhysiques ' Me.mnbDropDownActionArretsPhysiques.Checked = True Me.mnbDropDownActionArretsPhysiques.CheckOnClick = True Me.mnbDropDownActionArretsPhysiques.CheckState = System.Windows.Forms.CheckState.Checked Me.mnbDropDownActionArretsPhysiques.Name = "mnbDropDownActionArretsPhysiques" Me.mnbDropDownActionArretsPhysiques.Size = New System.Drawing.Size(222, 22) Me.mnbDropDownActionArretsPhysiques.Text = "Afficher les arrêts physiques" ' 'mnbSeparator3 ' Me.mnbSeparator3.AutoSize = False Me.mnbSeparator3.Name = "mnbSeparator3" Me.mnbSeparator3.Size = New System.Drawing.Size(20, 25) ' 'mnbSelectionZoom ' Me.mnbSelectionZoom.CheckOnClick = True Me.mnbSelectionZoom.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Image Me.mnbSelectionZoom.Image = CType(resources.GetObject("mnbSelectionZoom.Image"), System.Drawing.Image) Me.mnbSelectionZoom.ImageTransparentColor = System.Drawing.Color.Magenta Me.mnbSelectionZoom.Name = "mnbSelectionZoom" Me.mnbSelectionZoom.Size = New System.Drawing.Size(23, 22) Me.mnbSelectionZoom.Text = "Zoom par sélection" ' 'mnbCancelZoom ' Me.mnbCancelZoom.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Image Me.mnbCancelZoom.Image = CType(resources.GetObject("mnbCancelZoom.Image"), System.Drawing.Image) Me.mnbCancelZoom.ImageTransparentColor = System.Drawing.Color.Magenta Me.mnbCancelZoom.Name = "mnbCancelZoom" Me.mnbCancelZoom.Size = New System.Drawing.Size(23, 22) Me.mnbCancelZoom.Text = "Annuler le zoom" ' 'mnbSeparator4 ' Me.mnbSeparator4.AutoSize = False Me.mnbSeparator4.Name = "mnbSeparator4" Me.mnbSeparator4.Size = New System.Drawing.Size(20, 25) ' 'mnbParametrage ' Me.mnbParametrage.DisplayStyle = System.Windows.Forms.ToolStripItemDisplayStyle.Image Me.mnbParametrage.Image = CType(resources.GetObject("mnbParametrage.Image"), System.Drawing.Image) Me.mnbParametrage.ImageTransparentColor = System.Drawing.Color.Magenta Me.mnbParametrage.Name = "mnbParametrage" Me.mnbParametrage.Size = New System.Drawing.Size(23, 22) Me.mnbParametrage.Text = "Paramétrage" ' 'mncSPlacerArret ' Me.mncSPlacerArret.Name = "mncSPlacerArret" Me.mncSPlacerArret.Size = New System.Drawing.Size(216, 22) Me.mncSPlacerArret.Text = "Placer un arrêt" ' 'mncSSeparator1 ' Me.mncSSeparator1.Name = "mncSSeparator1" Me.mncSSeparator1.Size = New System.Drawing.Size(213, 6) ' 'mncSImage ' Me.mncSImage.Name = "mncSImage" Me.mncSImage.Size = New System.Drawing.Size(216, 22) Me.mncSImage.Text = "Image..." ' 'mncSDefinirLastArret ' Me.mncSDefinirLastArret.Name = "mncSDefinirLastArret" Me.mncSDefinirLastArret.Size = New System.Drawing.Size(216, 22) Me.mncSDefinirLastArret.Text = "Définir comme dernier arrêt" ' 'mncSSeparator2 ' Me.mncSSeparator2.Name = "mncSSeparator2" Me.mncSSeparator2.Size = New System.Drawing.Size(213, 6) ' 'mncSSupprimerArrets ' Me.mncSSupprimerArrets.Name = "mncSSupprimerArrets" Me.mncSSupprimerArrets.Size = New System.Drawing.Size(216, 22) Me.mncSSupprimerArrets.Text = "Supprimer le ou les arrêts" ' 'mncSInsererArret ' Me.mncSInsererArret.Name = "mncSInsererArret" Me.mncSInsererArret.Size = New System.Drawing.Size(216, 22) Me.mncSInsererArret.Text = "Insérer un arrêt" ' 'mncSSeparator3 ' Me.mncSSeparator3.Name = "mncSSeparator3" Me.mncSSeparator3.Size = New System.Drawing.Size(213, 6) ' 'mncSInformations ' Me.mncSInformations.Name = "mncSInformations" Me.mncSInformations.Size = New System.Drawing.Size(216, 22) Me.mncSInformations.Text = "Modifier les informations" ' 'mncSSupprimerSegment ' Me.mncSSupprimerSegment.Name = "mncSSupprimerSegment" Me.mncSSupprimerSegment.Size = New System.Drawing.Size(216, 22) Me.mncSSupprimerSegment.Text = "Supprimer le segment" ' 'mncSSeparator4 ' Me.mncSSeparator4.Name = "mncSSeparator4" Me.mncSSeparator4.Size = New System.Drawing.Size(213, 6) ' 'mncSBatirTroncon ' Me.mncSBatirTroncon.Name = "mncSBatirTroncon" Me.mncSBatirTroncon.Size = New System.Drawing.Size(216, 22) Me.mncSBatirTroncon.Text = "Bâtir un tronçon" ' 'mncTInformations ' Me.mncTInformations.Name = "mncTInformations" Me.mncTInformations.Size = New System.Drawing.Size(201, 22) Me.mncTInformations.Text = "Modifier les informations" ' 'mncTDistances ' Me.mncTDistances.Name = "mncTDistances" Me.mncTDistances.Size = New System.Drawing.Size(201, 22) Me.mncTDistances.Text = "Modifier les distances" ' 'mncTSeparator1 ' Me.mncTSeparator1.Name = "mncTSeparator1" Me.mncTSeparator1.Size = New System.Drawing.Size(198, 6) ' 'mncTTempsDeParcours ' Me.mncTTempsDeParcours.Name = "mncTTempsDeParcours" Me.mncTTempsDeParcours.Size = New System.Drawing.Size(201, 22) Me.mncTTempsDeParcours.Text = "Temps de parcours" ' 'mncTSeparator2 ' Me.mncTSeparator2.Name = "mncTSeparator2" Me.mncTSeparator2.Size = New System.Drawing.Size(198, 6) ' 'mncTCreerSensInverse ' Me.mncTCreerSensInverse.Name = "mncTCreerSensInverse" Me.mncTCreerSensInverse.Size = New System.Drawing.Size(201, 22) Me.mncTCreerSensInverse.Text = "Créer le sens inverse" ' 'mncTSeparator3 ' Me.mncTSeparator3.Name = "mncTSeparator3" Me.mncTSeparator3.Size = New System.Drawing.Size(198, 6) ' 'mncTSupprimerTroncon ' Me.mncTSupprimerTroncon.Name = "mncTSupprimerTroncon" Me.mncTSupprimerTroncon.Size = New System.Drawing.Size(201, 22) Me.mncTSupprimerTroncon.Text = "Supprimer le tronçon" ' 'mncTBatirItineraire ' Me.mncTBatirItineraire.Name = "mncTBatirItineraire" Me.mncTBatirItineraire.Size = New System.Drawing.Size(201, 22) Me.mncTBatirItineraire.Text = "Bâtir un itinéraire" ' 'mncIInformations ' Me.mncIInformations.Name = "mncIInformations" Me.mncIInformations.Size = New System.Drawing.Size(201, 22) Me.mncIInformations.Text = "Modifier les informations" ' 'mncISeparator1 ' Me.mncISeparator1.Name = "mncISeparator1" Me.mncISeparator1.Size = New System.Drawing.Size(198, 6) ' 'mncISupprimerItineraire ' Me.mncISupprimerItineraire.Name = "mncISupprimerItineraire" Me.mncISupprimerItineraire.Size = New System.Drawing.Size(201, 22) Me.mncISupprimerItineraire.Text = "Supprimer l'itinéraires" ' 'SplitContainer ' Me.SplitContainer.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D Me.SplitContainer.Dock = System.Windows.Forms.DockStyle.Fill Me.SplitContainer.FixedPanel = System.Windows.Forms.FixedPanel.Panel2 Me.SplitContainer.Location = New System.Drawing.Point(0, 25) Me.SplitContainer.Name = "SplitContainer" ' 'SplitContainer.Panel1 ' Me.SplitContainer.Panel1.AutoScroll = True Me.SplitContainer.Panel1.Controls.Add(Me.ElementHost1) ' 'SplitContainer.Panel2 ' Me.SplitContainer.Panel2.Controls.Add(Me.lblTitreCreation) Me.SplitContainer.Panel2.Controls.Add(Me.Panel1) Me.SplitContainer.Panel2.Controls.Add(Me.grdCreation) Me.SplitContainer.Panel2MinSize = 0 Me.SplitContainer.Size = New System.Drawing.Size(605, 418) Me.SplitContainer.SplitterDistance = 428 Me.SplitContainer.SplitterWidth = 2 Me.SplitContainer.TabIndex = 1 ' 'ElementHost1 ' Me.ElementHost1.Dock = System.Windows.Forms.DockStyle.Fill Me.ElementHost1.Location = New System.Drawing.Point(0, 0) Me.ElementHost1.Name = "ElementHost1" Me.ElementHost1.Size = New System.Drawing.Size(424, 414) Me.ElementHost1.TabIndex = 0 Me.ElementHost1.Text = "ElementHost1" Me.ElementHost1.Child = Me._StopsCanvas ' 'lblTitreCreation ' Me.lblTitreCreation.Anchor = CType(((System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Left) _ Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles) Me.lblTitreCreation.Location = New System.Drawing.Point(3, 4) Me.lblTitreCreation.Name = "lblTitreCreation" Me.lblTitreCreation.Size = New System.Drawing.Size(167, 16) Me.lblTitreCreation.TabIndex = 4 ' 'Panel1 ' Me.Panel1.AutoSize = True Me.Panel1.AutoSizeMode = System.Windows.Forms.AutoSizeMode.GrowAndShrink Me.Panel1.Controls.Add(Me.btnOk) Me.Panel1.Controls.Add(Me.btnAnnuler) Me.Panel1.Dock = System.Windows.Forms.DockStyle.Bottom Me.Panel1.Location = New System.Drawing.Point(0, 385) Me.Panel1.Name = "Panel1" Me.Panel1.Size = New System.Drawing.Size(171, 29) Me.Panel1.TabIndex = 3 ' 'btnOk ' Me.btnOk.Anchor = CType((System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles) Me.btnOk.BackColor = System.Drawing.SystemColors.Control Me.btnOk.FlatAppearance.MouseDownBackColor = System.Drawing.Color.LightSlateGray Me.btnOk.FlatAppearance.MouseOverBackColor = System.Drawing.Color.LightSteelBlue Me.btnOk.FlatStyle = System.Windows.Forms.FlatStyle.Flat Me.btnOk.Font = New System.Drawing.Font("Microsoft Sans Serif", 8.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte)) Me.btnOk.ForeColor = System.Drawing.SystemColors.ControlText Me.btnOk.Location = New System.Drawing.Point(12, 3) Me.btnOk.Name = "btnOk" Me.btnOk.Size = New System.Drawing.Size(75, 23) Me.btnOk.TabIndex = 6 Me.btnOk.Text = "OK" Me.btnOk.UseVisualStyleBackColor = True ' 'btnAnnuler ' Me.btnAnnuler.Anchor = CType((System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles) Me.btnAnnuler.BackColor = System.Drawing.SystemColors.Control Me.btnAnnuler.DialogResult = System.Windows.Forms.DialogResult.Cancel Me.btnAnnuler.FlatAppearance.MouseDownBackColor = System.Drawing.Color.LightSlateGray Me.btnAnnuler.FlatAppearance.MouseOverBackColor = System.Drawing.Color.LightSteelBlue Me.btnAnnuler.FlatStyle = System.Windows.Forms.FlatStyle.Flat Me.btnAnnuler.Font = New System.Drawing.Font("Microsoft Sans Serif", 8.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte)) Me.btnAnnuler.ForeColor = System.Drawing.SystemColors.ControlText Me.btnAnnuler.Location = New System.Drawing.Point(93, 3) Me.btnAnnuler.Name = "btnAnnuler" Me.btnAnnuler.Size = New System.Drawing.Size(75, 23) Me.btnAnnuler.TabIndex = 7 Me.btnAnnuler.Text = "Annuler" Me.btnAnnuler.UseVisualStyleBackColor = True ' 'grdCreation ' Me.grdCreation.Anchor = CType((((System.Windows.Forms.AnchorStyles.Top Or System.Windows.Forms.AnchorStyles.Bottom) _ Or System.Windows.Forms.AnchorStyles.Left) _ Or System.Windows.Forms.AnchorStyles.Right), System.Windows.Forms.AnchorStyles) Me.grdCreation.AutoResizeColumns = False Me.grdCreation.ColumnsFiltreActif = False Appearance1.BackColor = System.Drawing.SystemColors.Window Appearance1.BorderColor = System.Drawing.SystemColors.InactiveCaption Me.grdCreation.DisplayLayout.Appearance = Appearance1 Me.grdCreation.DisplayLayout.BorderStyle = Infragistics.Win.UIElementBorderStyle.Solid Me.grdCreation.DisplayLayout.CaptionVisible = Infragistics.Win.DefaultableBoolean.[False] Appearance2.BackColor = System.Drawing.SystemColors.ActiveBorder Appearance2.BackColor2 = System.Drawing.SystemColors.ControlDark Appearance2.BackGradientStyle = Infragistics.Win.GradientStyle.Vertical Appearance2.BorderColor = System.Drawing.SystemColors.Window Me.grdCreation.DisplayLayout.GroupByBox.Appearance = Appearance2 Appearance3.ForeColor = System.Drawing.SystemColors.GrayText Me.grdCreation.DisplayLayout.GroupByBox.BandLabelAppearance = Appearance3 Me.grdCreation.DisplayLayout.GroupByBox.BorderStyle = Infragistics.Win.UIElementBorderStyle.Solid Appearance4.BackColor = System.Drawing.SystemColors.ControlLightLight Appearance4.BackColor2 = System.Drawing.SystemColors.Control Appearance4.BackGradientStyle = Infragistics.Win.GradientStyle.Horizontal Appearance4.ForeColor = System.Drawing.SystemColors.GrayText Me.grdCreation.DisplayLayout.GroupByBox.PromptAppearance = Appearance4 Me.grdCreation.DisplayLayout.MaxColScrollRegions = 1 Me.grdCreation.DisplayLayout.MaxRowScrollRegions = 1 Appearance5.BackColor = System.Drawing.SystemColors.Window Appearance5.ForeColor = System.Drawing.SystemColors.ControlText Me.grdCreation.DisplayLayout.Override.ActiveCellAppearance = Appearance5 Appearance6.BackColor = System.Drawing.SystemColors.Highlight Appearance6.ForeColor = System.Drawing.SystemColors.HighlightText Me.grdCreation.DisplayLayout.Override.ActiveRowAppearance = Appearance6 Me.grdCreation.DisplayLayout.Override.AllowRowFiltering = Infragistics.Win.DefaultableBoolean.[False] Me.grdCreation.DisplayLayout.Override.BorderStyleCell = Infragistics.Win.UIElementBorderStyle.Dotted Me.grdCreation.DisplayLayout.Override.BorderStyleRow = Infragistics.Win.UIElementBorderStyle.Dotted Appearance7.BackColor = System.Drawing.SystemColors.Window Me.grdCreation.DisplayLayout.Override.CardAreaAppearance = Appearance7 Appearance8.BorderColor = System.Drawing.Color.Silver Appearance8.TextTrimming = Infragistics.Win.TextTrimming.EllipsisCharacter Me.grdCreation.DisplayLayout.Override.CellAppearance = Appearance8 Me.grdCreation.DisplayLayout.Override.CellPadding = 0 Appearance9.BackColor = System.Drawing.SystemColors.Control Appearance9.BackColor2 = System.Drawing.SystemColors.ControlDark Appearance9.BackGradientAlignment = Infragistics.Win.GradientAlignment.Element Appearance9.BackGradientStyle = Infragistics.Win.GradientStyle.Horizontal Appearance9.BorderColor = System.Drawing.SystemColors.Window Me.grdCreation.DisplayLayout.Override.GroupByRowAppearance = Appearance9 Appearance10.TextHAlignAsString = "Left" Me.grdCreation.DisplayLayout.Override.HeaderAppearance = Appearance10 Me.grdCreation.DisplayLayout.Override.HeaderClickAction = Infragistics.Win.UltraWinGrid.HeaderClickAction.SortMulti Me.grdCreation.DisplayLayout.Override.HeaderStyle = Infragistics.Win.HeaderStyle.WindowsXPCommand Appearance11.BackColor = System.Drawing.SystemColors.Window Appearance11.BorderColor = System.Drawing.Color.Silver Me.grdCreation.DisplayLayout.Override.RowAppearance = Appearance11 Me.grdCreation.DisplayLayout.Override.RowSelectors = Infragistics.Win.DefaultableBoolean.[False] Appearance12.BackColor = System.Drawing.SystemColors.ControlLight Me.grdCreation.DisplayLayout.Override.TemplateAddRowAppearance = Appearance12 Me.grdCreation.DisplayLayout.ScrollBounds = Infragistics.Win.UltraWinGrid.ScrollBounds.ScrollToFill Me.grdCreation.DisplayLayout.ScrollStyle = Infragistics.Win.UltraWinGrid.ScrollStyle.Immediate Me.grdCreation.DisplayLayout.ViewStyleBand = Infragistics.Win.UltraWinGrid.ViewStyleBand.OutlookGroupBy Me.grdCreation.Font = New System.Drawing.Font("Times New Roman", 8.25!, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, CType(0, Byte)) Me.grdCreation.Location = New System.Drawing.Point(0, 23) Me.grdCreation.Name = "grdCreation" Me.grdCreation.PrintColumnsKey = Nothing Me.grdCreation.PrintRowsIndex = Nothing Me.grdCreation.PrintTitle = Nothing Me.grdCreation.RowsActivation = Infragistics.Win.UltraWinGrid.Activation.AllowEdit Me.grdCreation.Size = New System.Drawing.Size(175, 391) Me.grdCreation.TabIndex = 5 Me.grdCreation.Tag = "" ' 'PlanDeLigne ' Me.AutoScaleDimensions = New System.Drawing.SizeF(6.0!, 13.0!) Me.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font Me.Controls.Add(Me.SplitContainer) Me.Controls.Add(Me.mnbMenu) Me.MinimumSize = New System.Drawing.Size(605, 431) Me.Name = "PlanDeLigne" Me.Size = New System.Drawing.Size(605, 443) Me.mnbMenu.ResumeLayout(False) Me.mnbMenu.PerformLayout() Me.SplitContainer.Panel1.ResumeLayout(False) Me.SplitContainer.Panel2.ResumeLayout(False) Me.SplitContainer.Panel2.PerformLayout() CType(Me.SplitContainer, System.ComponentModel.ISupportInitialize).EndInit() Me.SplitContainer.ResumeLayout(False) Me.Panel1.ResumeLayout(False) CType(Me.grdCreation, System.ComponentModel.ISupportInitialize).EndInit() Me.ResumeLayout(False) Me.PerformLayout() End Sub

  Read the article

• HttpClient POST fails to submit the form

  - by Jayomat

  Hi, I'm writing an app to check for the bus timetable's. Therefor I need to post some data to a html page, submit it, and parse the resulting page with htmlparser. Though it may be asked a lot, can some one help me identify if 1) this page does support post/get (I think it does) 2) which fields I need to use? 3) How to make the actual request? this is my code so far: String url = "http://busspur02.aseag.de/bs.exe?Cmd=RV&Karten=true&DatumT=30&DatumM=4&DatumJ=2010&ZeitH=&ZeitM=&Suchen=%28S%29uchen&GT0=&HT0=&GT1=&HT1="; String charset = "CP1252"; System.out.println("startFrom: "+start_from); System.out.println("goTo: "+destination); //String tag.v List<NameValuePair> params = new ArrayList<NameValuePair>(); params.add(new BasicNameValuePair("HTO", start_from)); params.add(new BasicNameValuePair("HT1", destination)); params.add(new BasicNameValuePair("GTO", "Aachen")); params.add(new BasicNameValuePair("GT1", "Aachen")); params.add(new BasicNameValuePair("DatumT", day)); params.add(new BasicNameValuePair("DatumM", month)); params.add(new BasicNameValuePair("DatumJ", year)); params.add(new BasicNameValuePair("ZeitH", hour)); params.add(new BasicNameValuePair("ZeitM", min)); UrlEncodedFormEntity query = new UrlEncodedFormEntity(params, charset); HttpPost post = new HttpPost(url); post.setEntity(query); InputStream response = new DefaultHttpClient().execute(post).getEntity().getContent(); // Now do your thing with the facebook response. String source = readText(response,"CP1252"); Log.d(TAG_AVV,response.toString()); System.out.println("STREAM "+source); One person also gave me a hint to use firebug to read what's going on at the page, but I don't really understand what to look for, or more precisely, how to use the provided information. I also find it confusing, for example, that when I enter the data by hand, the url says, for example, "....HTO=Kaiserplatz&...", but in Firebug, the same Kaiserplatz is connected to a different field, in this case: \<\td class="Start3" Kaiserplatz <\/td (I inserted \ to make it visible) The last line in my code prints the html page, but without having send a request.. it's printed as if there was no input at all... My app is almost done, I hope someone can help me out to finish it! thanks in advance EDIT: this is what the s.o.p returns: (At some point there actually is some input, but only the destination ???) 04-30 03:15:43.524: INFO/System.out(3303): STREAM <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 04-30 03:15:43.524: INFO/System.out(3303): <html> 04-30 03:15:43.524: INFO/System.out(3303): <head> 04-30 03:15:43.545: INFO/System.out(3303): <title>Busspur online</title> 04-30 03:15:43.554: INFO/System.out(3303): <base href="http://busspur02.aseag.de"> 04-30 03:15:43.554: INFO/System.out(3303): <meta name="description" content="Busspur im Internet"> 04-30 03:15:43.554: INFO/System.out(3303): <meta name="author" content="Dr. Manfred Enning"> 04-30 03:15:43.554: INFO/System.out(3303): <meta name="AUTH_TYPE" content="Basic"> 04-30 03:15:43.574: INFO/System.out(3303): <meta HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=windows-1252"> 04-30 03:15:43.574: INFO/System.out(3303): <meta HTTP-EQUIV="Content-Language" CONTENT="de"> 04-30 03:15:43.574: INFO/System.out(3303): <link rel=stylesheet type="text/css" href="busspur.css"> 04-30 03:15:43.574: INFO/System.out(3303): </head> 04-30 03:15:43.574: INFO/System.out(3303): 04-30 03:15:43.574: INFO/System.out(3303): <body> 04-30 03:15:43.574: INFO/System.out(3303): <table border="0" cellspacing="0" cellpadding="0" width="100%"> 04-30 03:15:43.574: INFO/System.out(3303): <tr> 04-30 03:15:43.584: INFO/System.out(3303): <td align="left" width="25%"><small>Version: 6.8.1.9s2<br>Datenstand: 13.04.2010 04-30 03:15:43.584: INFO/System.out(3303): 04-30 03:15:43.584: INFO/System.out(3303): <br>12.04.2010 - 12.06.2010 04-30 03:15:43.584: INFO/System.out(3303): <br>1663 04-30 03:15:43.584: INFO/System.out(3303): 3D3B9</small> 04-30 03:15:43.584: INFO/System.out(3303): </td> 04-30 03:15:43.584: INFO/System.out(3303): 04-30 03:15:43.584: INFO/System.out(3303): <td align="center" width="50%"> 04-30 03:15:43.584: INFO/System.out(3303): <a href="/bs.exe/SL?Sprache=Nederlands&amp;SID=3D3B9"><img src="http://www.busspur.de/logos/nederlands.gif" alt="Nederlands" border="0" Width="32" Height="22"></a><a href="/bs.exe/SL?Sprache=English&amp;SID=3D3B9"><img src="http://www.busspur.de/logos/english.gif" alt="English" border="0" Width="32" Height="22"></a><a href="/bs.exe/SL?Sprache=Francais&amp;SID=3D3B9"><img src="http://www.busspur.de/logos/francais.gif" alt="Francais" border="0" Width="32" Height="22"></a> 04-30 03:15:43.584: INFO/System.out(3303): </td> 04-30 03:15:43.584: INFO/System.out(3303): 04-30 03:15:43.594: INFO/System.out(3303): <td align="right" width="25%"> 04-30 03:15:43.594: INFO/System.out(3303): <a href="http://www.avv.de/"><img src="/logos/avvlogo.gif" border="0" alt="AVV"></a> 04-30 03:15:43.594: INFO/System.out(3303): </td> 04-30 03:15:43.594: INFO/System.out(3303): </tr> 04-30 03:15:43.594: INFO/System.out(3303): </table> 04-30 03:15:43.594: INFO/System.out(3303): 04-30 03:15:43.594: INFO/System.out(3303): <!-- Kopfbereich (automatisch erzeugt) --> 04-30 03:15:43.594: INFO/System.out(3303): <div align="center"> 04-30 03:15:43.594: INFO/System.out(3303): 04-30 03:15:43.604: INFO/System.out(3303): <H2>Busspur-Online <i>Verbindungsabfrage</i></H2> 04-30 03:15:43.604: INFO/System.out(3303): </div> 04-30 03:15:43.604: INFO/System.out(3303): <!-- Ende Kopfbereich --> 04-30 03:15:43.604: INFO/System.out(3303): 04-30 03:15:43.604: INFO/System.out(3303): <!-- Ausgabebereich (automatisch erzeugt) --> 04-30 03:15:43.604: INFO/System.out(3303): <div align="center"> 04-30 03:15:43.614: INFO/System.out(3303): <p></p> 04-30 03:15:43.614: INFO/System.out(3303): <p></p> 04-30 03:15:43.614: INFO/System.out(3303): 04-30 03:15:43.614: INFO/System.out(3303): 04-30 03:15:43.624: INFO/System.out(3303): </div> 04-30 03:15:43.624: INFO/System.out(3303): <!-- Ende Ausgabebereich --> 04-30 03:15:43.634: INFO/System.out(3303): 04-30 03:15:43.634: INFO/System.out(3303): <!-- Fussnotenbereich (automatisch erzeugt) --> 04-30 03:15:43.634: INFO/System.out(3303): <div align="left"> 04-30 03:15:43.634: INFO/System.out(3303): 04-30 03:15:43.634: INFO/System.out(3303): 04-30 03:15:43.634: INFO/System.out(3303): </div> 04-30 03:15:43.634: INFO/System.out(3303): <!-- Ende Fussnotenbereich --> 04-30 03:15:43.634: INFO/System.out(3303): 04-30 03:15:43.634: INFO/System.out(3303): <!-- Nachschlageliste (automatisch erzeugt) --> 04-30 03:15:43.634: INFO/System.out(3303): <div align="center"> 04-30 03:15:43.644: INFO/System.out(3303): 04-30 03:15:43.644: INFO/System.out(3303): </div> 04-30 03:15:43.644: INFO/System.out(3303): <!-- Ende Nachschlageliste --> 04-30 03:15:43.644: INFO/System.out(3303): 04-30 03:15:43.644: INFO/System.out(3303): 04-30 03:15:43.644: INFO/System.out(3303): <!-- Eingabeformular --> 04-30 03:15:43.644: INFO/System.out(3303): 04-30 03:15:43.644: INFO/System.out(3303): 04-30 03:15:43.644: INFO/System.out(3303): <!-- Eingabeformular --> 04-30 03:15:43.644: INFO/System.out(3303): <form name="Maske" action="/bs.exe" method="get"> 04-30 03:15:43.644: INFO/System.out(3303): 04-30 03:15:43.644: INFO/System.out(3303): <input type="hidden" name="SID" value="3D3B9"> 04-30 03:15:43.644: INFO/System.out(3303): <input type="hidden" name="ScreenX" value=""> 04-30 03:15:43.654: INFO/System.out(3303): <input type="hidden" name="ScreenY" value=""> 04-30 03:15:43.654: INFO/System.out(3303): <input type="hidden" class="hiddenForm" name="CMD" value="CR" /> 04-30 03:15:43.654: INFO/System.out(3303): 04-30 03:15:43.654: INFO/System.out(3303): 04-30 03:15:43.654: INFO/System.out(3303): <input TYPE="Submit" name="Suchen" value="S" tabindex="20" style="visibility:hidden"> 04-30 03:15:43.654: INFO/System.out(3303): 04-30 03:15:43.654: INFO/System.out(3303): <table align="center" border="0" cellspacing="0" cellpadding="2"> 04-30 03:15:43.654: INFO/System.out(3303): <tr> 04-30 03:15:43.654: INFO/System.out(3303): <td class="Haupt"> 04-30 03:15:43.654: INFO/System.out(3303): 04-30 03:15:43.674: INFO/System.out(3303): <table border="0" cellspacing="0" cellpadding="2"> 04-30 03:15:43.674: INFO/System.out(3303): <!-- 1.Zeile Startauswahl --> 04-30 03:15:43.674: INFO/System.out(3303): <tr> 04-30 03:15:43.674: INFO/System.out(3303): <td rowspan="2" class="Start1"> 04-30 03:15:43.674: INFO/System.out(3303): Start 04-30 03:15:43.685: INFO/System.out(3303): </td> 04-30 03:15:43.685: INFO/System.out(3303): 04-30 03:15:43.685: INFO/System.out(3303): <td class="Start2" height="25"> 04-30 03:15:43.685: INFO/System.out(3303): Stadt/Gemeinde 04-30 03:15:43.685: INFO/System.out(3303): </td> 04-30 03:15:43.685: INFO/System.out(3303): 04-30 03:15:43.685: INFO/System.out(3303): <td class="Start3"> 04-30 03:15:43.685: INFO/System.out(3303): <input type="text" name="GT0" value="" tabindex="1" /> 04-30 03:15:43.704: INFO/System.out(3303): 04-30 03:15:43.704: INFO/System.out(3303): </td> 04-30 03:15:43.704: INFO/System.out(3303): 04-30 03:15:43.704: INFO/System.out(3303): 04-30 03:15:43.704: INFO/System.out(3303): <td rowspan="2" class="Start4"> 04-30 03:15:43.714: INFO/System.out(3303): <input type="submit" name="Map0" value="Karte" tabindex="100" /> 04-30 03:15:43.724: INFO/System.out(3303): 04-30 03:15:43.724: INFO/System.out(3303): </td> 04-30 03:15:43.724: INFO/System.out(3303): 04-30 03:15:43.724: INFO/System.out(3303): 04-30 03:15:43.724: INFO/System.out(3303): </tr> 04-30 03:15:43.724: INFO/System.out(3303): 04-30 03:15:43.724: INFO/System.out(3303): <tr> 04-30 03:15:43.734: INFO/System.out(3303): <td class="Start2" height="25"> 04-30 03:15:43.734: INFO/System.out(3303): <select name="T0" id="efaT0"> 04-30 03:15:43.734: INFO/System.out(3303): <option value="A" >Adresse 04-30 03:15:43.734: INFO/System.out(3303): <option value="H" selected="selected">Haltestelle 04-30 03:15:43.734: INFO/System.out(3303): <option value="Z" >Bes. Ziel 04-30 03:15:43.734: INFO/System.out(3303): </select> 04-30 03:15:43.734: INFO/System.out(3303): 04-30 03:15:43.734: INFO/System.out(3303): </td> 04-30 03:15:43.734: INFO/System.out(3303): 04-30 03:15:43.734: INFO/System.out(3303): <td class="Start3"> 04-30 03:15:43.734: INFO/System.out(3303): <input type="text" name="HT0" value="" tabindex="2" /> 04-30 03:15:43.734: INFO/System.out(3303): 04-30 03:15:43.745: INFO/System.out(3303): </td> 04-30 03:15:43.754: INFO/System.out(3303): 04-30 03:15:43.774: INFO/System.out(3303): </tr> 04-30 03:15:43.784: INFO/System.out(3303): 04-30 03:15:43.784: INFO/System.out(3303): <!-- 2.Zeile Ziel oder ViaAuswahl --> 04-30 03:15:43.784: INFO/System.out(3303): 04-30 03:15:43.805: INFO/System.out(3303): <tr> 04-30 03:15:43.834: INFO/System.out(3303): <td rowspan="2" class="Ziel1"> 04-30 03:15:43.834: INFO/System.out(3303): Ziel 04-30 03:15:43.834: INFO/System.out(3303): </td> 04-30 03:15:43.844: INFO/System.out(3303): 04-30 03:15:43.844: INFO/System.out(3303): <td class="Ziel2" height="25"> 04-30 03:15:43.844: INFO/System.out(3303): Stadt/Gemeinde 04-30 03:15:43.844: INFO/System.out(3303): </td> 04-30 03:15:43.854: INFO/System.out(3303): 04-30 03:15:43.854: INFO/System.out(3303): <td class="Ziel3"> 04-30 03:15:43.854: INFO/System.out(3303): Aachen 04-30 03:15:43.864: INFO/System.out(3303): </td> 04-30 03:15:43.874: INFO/System.out(3303): 04-30 03:15:43.874: INFO/System.out(3303): 04-30 03:15:43.884: INFO/System.out(3303): <td rowspan="2" class="Ziel4"> 04-30 03:15:43.884: INFO/System.out(3303): <input type="submit" name="Map1" value="Karte" tabindex="101" /> 04-30 03:15:43.884: INFO/System.out(3303): 04-30 03:15:43.884: INFO/System.out(3303): </td> 04-30 03:15:43.884: INFO/System.out(3303): 04-30 03:15:43.884: INFO/System.out(3303): 04-30 03:15:43.884: INFO/System.out(3303): </tr> 04-30 03:15:43.884: INFO/System.out(3303): 04-30 03:15:43.884: INFO/System.out(3303): <tr> 04-30 03:15:43.884: INFO/System.out(3303): <td class="Ziel2" height="25"> 04-30 03:15:43.894: INFO/System.out(3303): <small></small> 04-30 03:15:43.894: INFO/System.out(3303): </td> 04-30 03:15:43.894: INFO/System.out(3303): <td class="Ziel3"> 04-30 03:15:43.894: INFO/System.out(3303): Karlsgraben 04-30 03:15:43.904: INFO/System.out(3303): </td> 04-30 03:15:43.904: INFO/System.out(3303): </tr> 04-30 03:15:43.904: INFO/System.out(3303): 04-30 03:15:43.914: INFO/System.out(3303): 04-30 03:15:43.924: INFO/System.out(3303): 04-30 03:15:43.934: INFO/System.out(3303): 04-30 03:15:43.934: INFO/System.out(3303): 04-30 03:15:43.934: INFO/System.out(3303): 04-30 03:15:43.934: INFO/System.out(3303): <!-- 3.Zeile Datum/Zeit/Intervall --> 04-30 03:15:43.934: INFO/System.out(3303): <tr> 04-30 03:15:43.944: INFO/System.out(3303): <td rowspan="3" class="Zeit1"> 04-30 03:15:43.944: INFO/System.out(3303): Zeit 04-30 03:15:43.944: INFO/System.out(3303): </td> 04-30 03:15:43.944: INFO/System.out(3303): <td class="Datum2"> 04-30 03:15:43.944: INFO/System.out(3303): Datum 04-30 03:15:43.944: INFO/System.out(3303): </td> 04-30 03:15:43.944: INFO/System.out(3303): 04-30 03:15:43.944: INFO/System.out(3303): <!-- Für Abfragen ohne Karte alternativ Zeile ohne colspan hinzufügen --> 04-30 03:15:43.954: INFO/System.out(3303): 04-30 03:15:43.964: INFO/System.out(3303): <td class="Datum3" height="25" colspan="2"> 04-30 03:15:43.984: INFO/System.out(3303): <select name="DatumT" tabindex="10" id="efaDatumT"> 04-30 03:15:43.984: INFO/System.out(3303): <option >1</option> 04-30 03:15:43.984: INFO/System.out(3303): <option >2</option> 04-30 03:15:43.984: INFO/System.out(3303): <option >3</option> 04-30 03:15:43.984: INFO/System.out(3303): <option >4</option> 04-30 03:15:43.984: INFO/System.out(3303): <option >5</option> 04-30 03:15:43.984: INFO/System.out(3303): <option >6</option> 04-30 03:15:43.984: INFO/System.out(3303): <option >7</option> 04-30 03:15:43.984: INFO/System.out(3303): <option >8</option> 04-30 03:15:43.994: INFO/System.out(3303): <option >9</option> 04-30 03:15:43.994: INFO/System.out(3303): <option >10</option> 04-30 03:15:43.994: INFO/System.out(3303): <option >11</option> 04-30 03:15:43.994: INFO/System.out(3303): <option >12</option> 04-30 03:15:44.005: INFO/System.out(3303): <option >13</option> 04-30 03:15:44.024: INFO/System.out(3303): <option >14</option> 04-30 03:15:44.034: INFO/System.out(3303): <option >15</option> 04-30 03:15:44.034: INFO/System.out(3303): <option >16</option> 04-30 03:15:44.034: INFO/System.out(3303): <option >17</option> 04-30 03:15:44.034: INFO/System.out(3303): <option >18</option> 04-30 03:15:44.044: INFO/System.out(3303): <option >19</option> 04-30 03:15:44.044: INFO/System.out(3303): <option >20</option> 04-30 03:15:44.044: INFO/System.out(3303): <option >21</option> 04-30 03:15:44.044: INFO/System.out(3303): <option >22</option> 04-30 03:15:44.044: INFO/System.out(3303): <option >23</option> 04-30 03:15:44.044: INFO/System.out(3303): <option >24</option> 04-30 03:15:44.044: INFO/System.out(3303): <option >25</option> 04-30 03:15:44.044: INFO/System.out(3303): <option >26</option> 04-30 03:15:44.044: INFO/System.out(3303): <option >27</option> 04-30 03:15:44.044: INFO/System.out(3303): <option >28</option> 04-30 03:15:44.044: INFO/System.out(3303): <option >29</option> 04-30 03:15:44.044: INFO/System.out(3303): <option selected="selected">30</option> 04-30 03:15:44.044: INFO/System.out(3303): <option >31</option> 04-30 03:15:44.055: INFO/System.out(3303): </select> 04-30 03:15:44.055: INFO/System.out(3303): . 04-30 03:15:44.055: INFO/System.out(3303): <select name="DatumM" tabindex="11" id="efaDatumM"> 04-30 03:15:44.055: INFO/System.out(3303): <option >1</option> 04-30 03:15:44.055: INFO/System.out(3303): <option >2</option> 04-30 03:15:44.055: INFO/System.out(3303): <option >3</option> 04-30 03:15:44.064: INFO/System.out(3303): <option selected="selected">4</option> 04-30 03:15:44.064: INFO/System.out(3303): <option >5</option> 04-30 03:15:44.064: INFO/System.out(3303): <option >6</option> 04-30 03:15:44.064: INFO/System.out(3303): <option >7</option> 04-30 03:15:44.064: INFO/System.out(3303): <option >8</option> 04-30 03:15:44.064: INFO/System.out(3303): <option >9</option> 04-30 03:15:44.064: INFO/System.out(3303): <option >10</option> 04-30 03:15:44.064: INFO/System.out(3303): <option >11</option> 04-30 03:15:44.085: INFO/System.out(3303): <option >12</option> 04-30 03:15:44.085: INFO/System.out(3303): </select> 04-30 03:15:44.085: INFO/System.out(3303): . 04-30 03:15:44.085: INFO/System.out(3303): <select name="DatumJ" tabindex="12" id="efaDatumJ"> 04-30 03:15:44.095: INFO/System.out(3303): <option >2009</option> 04-30 03:15:44.095: INFO/System.out(3303): <option selected="selected">2010</option> 04-30 03:15:44.095: INFO/System.out(3303): <option >2011</option> 04-30 03:15:44.095: INFO/System.out(3303): </select> 04-30 03:15:44.095: INFO/System.out(3303): 04-30 03:15:44.095: INFO/System.out(3303): </td> 04-30 03:15:44.095: INFO/System.out(3303): 04-30 03:15:44.105: INFO/System.out(3303): </tr> 04-30 03:15:44.115: INFO/System.out(3303): 04-30 03:15:44.115: INFO/System.out(3303): <tr> 04-30 03:15:44.115: INFO/System.out(3303): <td class="Uhrzeit2"> 04-30 03:15:44.115: INFO/System.out(3303): <input type="radio" name="AbfAnk" value="Abf" checked />Abfahrten ab<br /> 04-30 03:15:44.115: INFO/System.out(3303): <input type="radio" name="AbfAnk" value="Ank" />Ankünfte bis 04-30 03:15:44.115: INFO/System.out(3303): 04-30 03:15:44.115: INFO/System.out(3303): </td> 04-30 03:15:44.125: INFO/System.out(3303): <td class="Uhrzeit3" height="25"> 04-30 03:15:44.125: INFO/System.out(3303): <select name="ZeitH" tabindex="14" id="efaZeitH"> 04-30 03:15:44.125: INFO/System.out(3303): <option >0</option> 04-30 03:15:44.125: INFO/System.out(3303): <option >1</option> 04-30 03:15:44.125: INFO/System.out(3303): <option >2</option> 04-30 03:15:44.135: INFO/System.out(3303): <option >3</option> 04-30 03:15:44.135: INFO/System.out(3303): <option >4</option> 04-30 03:15:44.135: INFO/System.out(3303): <option >5</option> 04-30 03:15:44.135: INFO/System.out(3303): <option >6</option> 04-30 03:15:44.135: INFO/System.out(3303): <option >7</option> 04-30 03:15:44.135: INFO/System.out(3303): <option >8</option> 04-30 03:15:44.145: INFO/System.out(3303): <option >9</option> 04-30 03:15:44.145: INFO/System.out(3303): <option >10</option> 04-30 03:15:44.145: INFO/System.out(3303): <option >11</option> 04-30 03:15:44.145: INFO/System.out(3303): <option >12</option> 04-30 03:15:44.145: INFO/System.out(3303): <option >13</option> 04-30 03:15:44.145: INFO/System.out(3303): <option >14</option> 04-30 03:15:44.145: INFO/System.out(3303): <option selected="selected">15</option> 04-30 03:15:44.145: INFO/System.out(3303): <option >16</option> 04-30 03:15:44.145: INFO/System.out(3303): <option >17</option> 04-30 03:15:44.145: INFO/System.out(3303): <option >18</option> 04-30 03:15:44.145: INFO/System.out(3303): <option >19</option> 04-30 03:15:44.155: INFO/System.out(3303): <option >20</option> 04-30 03:15:44.155: INFO/System.out(3303): <option >21</option> 04-30 03:15:44.155: INFO/System.out(3303): <option >22</option> 04-30 03:15:44.155: INFO/System.out(3303): <option >23</option> 04-30 03:15:44.155: INFO/System.out(3303): </select> 04-30 03:15:44.155: INFO/System.out(3303): : 04-30 03:15:44.155: INFO/System.out(3303): <select name="ZeitM" tabindex="15" id="efaZeitM"> 04-30 03:15:44.155: INFO/System.out(3303): <option >00</option> 04-30 03:15:44.155: INFO/System.out(3303): <option selected="selected">15</option> 04-30 03:15:44.155: INFO/System.out(3303): <option >30</option> 04-30 03:15:44.155: INFO/System.out(3303): <option >45</option> 04-30 03:15:44.155: INFO/System.out(3303): </select> 04-30 03:15:44.155: INFO/System.out(3303): 04-30 03:15:44.155: INFO/System.out(3303): </td> 04-30 03:15:44.155: INFO/System.out(3303): 04-30 03:15:44.165: INFO/System.out(3303): <td class="Uhrzeit2">&nbsp;</td> 04-30 03:15:44.165: INFO/System.out(3303): 04-30 03:15:44.165: INFO/System.out(3303): </tr> 04-30 03:15:44.165: INFO/System.out(3303): 04-30 03:15:44.165: INFO/System.out(3303): <tr> 04-30 03:15:44.165: INFO/System.out(3303): <td class="Intervall2"> 04-30 03:15:44.165: INFO/System.out(3303): Intervall 04-30 03:15:44.165: INFO/System.out(3303): </td> 04-30 03:15:44.184: INFO/System.out(3303): 04-30 03:15:44.184: INFO/System.out(3303): <td class="Intervall3" height="25"> 04-30 03:15:44.184: INFO/System.out(3303): <select name="Intervall" tabindex="13" id="efaIntervall"> 04-30 03:15:44.184: INFO/System.out(3303): <option value="60" >1 h</option> 04-30 03:15:44.184: INFO/System.out(3303): <option value="120" >2 h</option> 04-30 03:15:44.184: INFO/System.out(3303): <option value="240" >4 h</option> 04-30 03:15:44.184: INFO/System.out(3303): <option value="480" >8 h</option> 04-30 03:15:44.184: INFO/System.out(3303): <option value="1800" >ganzer Tag</option> 04-30 03:15:44.194: INFO/System.out(3303): </select> 04-30 03:15:44.194: INFO/System.out(3303): 04-30 03:15:44.204: INFO/System.out(3303): </td> 04-30 03:15:44.204: INFO/System.out(3303): 04-30 03:15:44.204: INFO/System.out(3303): <td class="Intervall3">&nbsp; 04-30 03:15:44.204: INFO/System.out(3303): 04-30 03:15:44.204: INFO/System.out(3303): </tr> 04-30 03:15:44.204: INFO/System.out(3303): </table> 04-30 03:15:44.204: INFO/System.out(3303): 04-30 03:15:44.204: INFO/System.out(3303): </td> 04-30 03:15:44.204: INFO/System.out(3303): 04-30 03:15:44.204: INFO/System.out(3303): <td class="Schalter" valign="top"> 04-30 03:15:44.204: INFO/System.out(3303): <table class="Schalter"> 04-30 03:15:44.204: INFO/System.out(3303): <!-- Buttons --> 04-30 03:15:44.204: INFO/System.out(3303): <tr> 04-30 03:15:44.204: INFO/System.out(3303): <td class="Schalter" align="center"> 04-30 03:15:44.226: INFO/System.out(3303): <input TYPE="Submit" accesskey="s" class="SuchenBtn" name="Suchen" tabindex="20" VALUE="(S)uchen"> 04-30 03:15:44.226: INFO/System.out(3303): </td> 04-30 03:15:44.226: INFO/System.out(3303): </tr> 04-30 03:15:44.226: INFO/System.out(3303): 04-30 03:15:44.226: INFO/System.out(3303): 04-30 03:15:44.226: INFO/System.out(3303): <tr> 04-30 03:15:44.226: INFO/System.out(3303): <td class="Schalter" align="center"> 04-30 03:15:44.226: INFO/System.out(3303): <input TYPE="Submit" accesskey="o" name="Optionen" tabindex="22" VALUE="(O)ptionen"> 04-30 03:15:44.226: INFO/System.out(3303): </td> 04-30 03:15:44.226: INFO/System.out(3303): </tr> 04-30 03:15:44.226: INFO/System.out(3303): 04-30 03:15:44.226: INFO/System.out(3303): 04-30 03:15:44.226: INFO/System.out(3303): <tr> 04-30 03:15:44.226: INFO/System.out(3303): <td class="Schalter" align="center"> 04-30 03:15:44.226: INFO/System.out(3303): <input TYPE="Button" accesskey="z" tabindex="24" VALUE="(Z)urück" onClick="history.back()"> 04-30 03:15:44.226: INFO/System.out(3303): </td> 04-30 03:15:44.226: INFO/System.out(3303): </tr> 04-30 03:15:44.226: INFO/System.out(3303): <tr> 04-30 03:15:44.226: INFO/System.out(3303): <td class="Schalter" align="center"> 04-30 03:15:44.226: INFO/System.out(3303): <input TYPE="Button" accesskey="h" tabindex="25" VALUE="(H)ilfe" onClick="self.location.href='/bs.exe/FF?N=hilfe&amp;SID=3D3B9'"> 04-30 03:15:44.226: INFO/System.out(3303): </td> 04-30 03:15:44.235: INFO/System.out(3303): </tr> 04-30 03:15:44.235: INFO/System.out(3303): <tr> 04-30 03:15:44.235: INFO/System.out(3303): <td class="Schalter" align="center"> 04-30 03:15:44.235: INFO/System.out(3303): <input TYPE="Submit" accesskey="n" tabindex="26" name="Loeschen" VALUE="(N)eue Suche"> 04-30 03:15:44.235: INFO/System.out(3303): </td> 04-30 03:15:44.235: INFO/System.out(3303): </tr> 04-30 03:15:44.235: INFO/System.out(3303): 04-30 03:15:44.235: INFO/System.out(3303): <tr> 04-30 03:15:44.235: INFO/System.out(3303): 04-30 03:15:44.244: INFO/System.out(3303): <td class="Schalter" align="center"> 04-30 03:15:44.244: INFO/System.out(3303): <input TYPE="Button" accesskey="a" tabindex="27" VALUE="H(a)ltestelle" onClick="self.location.href='/bs.exe/RHFF?Karten=true?N=Result&amp;SID=3D3B9'"> 04-30 03:15:44.244: INFO/System.out(3303): </td> 04-30 03:15:44.244: INFO/System.out(3303): 04-30 03:15:44.244: INFO/System.out(3303): </tr> 04-30 03:15:44.244: INFO/System.out(3303): </table> 04-30 03:15:44.254: INFO/System.out(3303): 04-30 03:15:44.254: INFO/System.out(3303): </td> 04-30 03:15:44.254: INFO/System.out(3303): </tr> 04-30 03:15:44.254: INFO/System.out(3303): </table> 04-30 03:15:44.254: INFO/System.out(3303): </form> 04-30 03:15:44.254: INFO/System.out(3303): 04-30 03:15:44.254: INFO/System.out(3303): 04-30 03:15:44.254: INFO/System.out(3303): <!-- Meldungsbereich (automatisch erzeugt) --> 04-30 03:15:44.254: INFO/System.out(3303): <div align="center" id="meldungen"> 04-30 03:15:44.265: INFO/System.out(3303): <table class="Bedienhinweise"><tr><td rowspan="2"><img SRC="http://www.busspur.de/logos/hinweis.png" ALIGN="top" alt="Symbol" WIDTH="32" HEIGHT="20">&nbsp;</td><td rowspan="2">Start</td><td>Geben Sie den Namen der Stadt/Gemeinde ein</td></tr><tr><td>Geben Sie den Namen der Haltestelle ein</td></tr></table> 04-30 03:15:44.265: INFO/System.out(3303): </div> 04-30 03:15:44.265:

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• StackOverflowException throws often when .net application built with Debug mode

  - by user1487950

  I have an application which access an external webservice often, when i are trying to debug it, means debuging in vistual studio. it often throws out StackOverflowException at the webserverice call point. when building in Release mode , the exception thrown out only occasionally. I checked the call stack, looks like there is no recursive call. can you please suggest? thank you very much. call statck attached. [In a sleep, wait, or join] mscorlib.dll!System.Threading.WaitHandle.InternalWaitOne(System.Runtime.InteropServices.SafeHandle waitableSafeHandle, long millisecondsTimeout, bool hasThreadAffinity, bool exitContext) + 0x2b bytes mscorlib.dll!System.Threading.WaitHandle.WaitOne(int millisecondsTimeout, bool exitContext) + 0x2d bytes System.dll!System.Net.NetworkAddressChangePolled.CheckAndReset() + 0x9d bytes System.dll!System.Net.NclUtilities.LocalAddresses.get() + 0x49 bytes System.dll!System.Net.WebProxyScriptHelper.myIpAddress() + 0x27 bytes [Native to Managed Transition] System.dll!System.Net.WebProxyScriptHelper.MyMethodInfo.Invoke(object target, System.Reflection.BindingFlags bindingAttr, System.Reflection.Binder binder, object[] args, System.Globalization.CultureInfo culture) + 0x6b bytes MTOqoHCT.dll!JScript 0.myIpAddress(object this, Microsoft.JScript.Vsa.VsaEngine vsa Engine, object arguments) + 0x91 bytes MTOqoHCT.dll!JScript 0.FindProxyForURL(object this, Microsoft.JScript.Vsa.VsaEngine vsa Engine, object arguments, object url, object host) + 0x3c6e bytes MTOqoHCT.dll!__WebProxyScript.__WebProxyScript.ExecuteFindProxyForURL(object url, object host) + 0x11d bytes [Native to Managed Transition] Microsoft.JScript.dll!System.Net.VsaWebProxyScript.CallMethod(object targetObject, string name, object[] args) + 0x11a bytes Microsoft.JScript.dll!System.Net.VsaWebProxyScript.Run(string url, string host) + 0x74 bytes [Native to Managed Transition] [Managed to Native Transition] mscorlib.dll!System.Runtime.Remoting.Messaging.StackBuilderSink.SyncProcessMessage(System.Runtime.Remoting.Messaging.IMessage msg, int methodPtr, bool fExecuteInContext) + 0x1ef bytes mscorlib.dll!System.Runtime.Remoting.Messaging.StackBuilderSink.SyncProcessMessage(System.Runtime.Remoting.Messaging.IMessage msg) + 0xf bytes mscorlib.dll!System.Runtime.Remoting.Messaging.ServerObjectTerminatorSink.SyncProcessMessage(System.Runtime.Remoting.Messaging.IMessage reqMsg) + 0x66 bytes mscorlib.dll!System.Runtime.Remoting.Messaging.ServerContextTerminatorSink.SyncProcessMessage(System.Runtime.Remoting.Messaging.IMessage reqMsg) + 0x8a bytes mscorlib.dll!System.Runtime.Remoting.Channels.CrossContextChannel.SyncProcessMessageCallback(object[] args) + 0x94 bytes mscorlib.dll!System.Threading.Thread.CompleteCrossContextCallback(System.Threading.InternalCrossContextDelegate ftnToCall, object[] args) + 0x8 bytes [Native to Managed Transition] [Managed to Native Transition] mscorlib.dll!System.Runtime.Remoting.Channels.CrossContextChannel.SyncProcessMessage(System.Runtime.Remoting.Messaging.IMessage reqMsg) + 0xa7 bytes mscorlib.dll!System.Runtime.Remoting.Channels.ChannelServices.SyncDispatchMessage(System.Runtime.Remoting.Messaging.IMessage msg) + 0x92 bytes mscorlib.dll!System.Runtime.Remoting.Channels.CrossAppDomainSink.DoDispatch(byte[] reqStmBuff, System.Runtime.Remoting.Messaging.SmuggledMethodCallMessage smuggledMcm, out System.Runtime.Remoting.Messaging.SmuggledMethodReturnMessage smuggledMrm) + 0xed bytes mscorlib.dll!System.Runtime.Remoting.Channels.CrossAppDomainSink.DoTransitionDispatchCallback(object[] args) + 0x8a bytes mscorlib.dll!System.Threading.Thread.CompleteCrossContextCallback(System.Threading.InternalCrossContextDelegate ftnToCall, object[] args) + 0x8 bytes [Appdomain Transition] mscorlib.dll!System.Runtime.Remoting.Channels.CrossAppDomainSink.DoTransitionDispatch(byte[] reqStmBuff, System.Runtime.Remoting.Messaging.SmuggledMethodCallMessage smuggledMcm, out System.Runtime.Remoting.Messaging.SmuggledMethodReturnMessage smuggledMrm) + 0x74 bytes mscorlib.dll!System.Runtime.Remoting.Channels.CrossAppDomainSink.SyncProcessMessage(System.Runtime.Remoting.Messaging.IMessage reqMsg) + 0xa3 bytes mscorlib.dll!System.Runtime.Remoting.Proxies.RemotingProxy.CallProcessMessage(System.Runtime.Remoting.Messaging.IMessageSink ms, System.Runtime.Remoting.Messaging.IMessage reqMsg, System.Runtime.Remoting.Contexts.ArrayWithSize proxySinks, System.Threading.Thread currentThread, System.Runtime.Remoting.Contexts.Context currentContext, bool bSkippingContextChain) + 0x50 bytes mscorlib.dll!System.Runtime.Remoting.Proxies.RemotingProxy.InternalInvoke(System.Runtime.Remoting.Messaging.IMethodCallMessage reqMcmMsg, bool useDispatchMessage, int callType) + 0x1d5 bytes mscorlib.dll!System.Runtime.Remoting.Proxies.RemotingProxy.Invoke(System.Runtime.Remoting.Messaging.IMessage reqMsg) + 0x66 bytes mscorlib.dll!System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(ref System.Runtime.Remoting.Proxies.MessageData msgData, int type) + 0xee bytes System.dll!System.Net.NetWebProxyFinder.GetProxies(System.Uri destination, out System.Collections.Generic.IList<string> proxyList) + 0x83 bytes System.dll!System.Net.AutoWebProxyScriptEngine.GetProxies(System.Uri destination, out System.Collections.Generic.IList<string> proxyList, ref int syncStatus) + 0x84 bytes System.dll!System.Net.WebProxy.GetProxiesAuto(System.Uri destination, ref int syncStatus) + 0x2e bytes System.dll!System.Net.ProxyScriptChain.GetNextProxy(out System.Uri proxy) + 0x2e bytes System.dll!System.Net.ProxyChain.ProxyEnumerator.MoveNext() + 0x98 bytes System.dll!System.Net.ServicePointManager.FindServicePoint(System.Uri address, System.Net.IWebProxy proxy, out System.Net.ProxyChain chain, ref System.Net.HttpAbortDelegate abortDelegate, ref int abortState) + 0x120 bytes System.dll!System.Net.HttpWebRequest.FindServicePoint(bool forceFind) + 0xb1 bytes System.dll!System.Net.HttpWebRequest.GetRequestStream(out System.Net.TransportContext context) + 0x247 bytes System.dll!System.Net.HttpWebRequest.GetRequestStream() + 0xe bytes System.Web.Services.dll!System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(string methodName, object[] parameters) + 0xc0 bytes Gfinet.Config.dll!Gfinet.Config.Service.cfg_webservice.addOrUpdateProperties(string string, int intVal, Gfinet.Config.Service.PropertiesDataM[] propertiesDataMs) + 0xa3 bytes Gfinet.Config.dll!Gfinet.Config.Service.WSServiceImpl.AddOrUpdateProperties(int setId, Gfinet.Config.Service.PropertiesDataM[] properties) + 0x46 bytes [Native to Managed Transition] Gfinet.Config.dll!Gfinet.Config.Service.ServiceAspect.InvocationHandler(object target, System.Reflection.MethodBase method, object[] parameters) + 0x49e bytes Gfinet.Config.dll!Gfinet.Config.DynamicProxy.DynamicProxyImpl.Invoke(System.Runtime.Remoting.Messaging.IMessage message) + 0x110 bytes mscorlib.dll!System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(ref System.Runtime.Remoting.Proxies.MessageData msgData, int type) + 0xee bytes Tici.Kraps.Services.dll!Tici.Kraps.Services.Configuration.GFINetConfiguration.StoreElement(string application, string category, string id, string elementValue, bool save) Line 303 + 0x55 bytes C# Tici.Kraps.Services.dll!Tici.Kraps.Services.Configuration.GFINetConfiguration.SaveAllInternal() Line 582 + 0x6e bytes C# Tici.Kraps.Services.dll!Tici.Kraps.Services.Configuration.GFINetConfiguration.SaveAll(bool async) Line 434 + 0x8 bytes C# Tici.Kraps.Services.dll!Tici.Kraps.Services.Configuration.GFINetConfiguration.SaveAll() Line 406 + 0xa bytes C# Tici.Kraps.Services.dll!Tici.Kraps.Services.Container.Persistor.Save() Line 59 + 0xc bytes C# Spark.exe!Tici.Kraps.RibbonShell.OnBtnSaveWorkspaceItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e) Line 642 + 0xf bytes C# DevExpress.XtraBars.v11.2.dll!DevExpress.XtraBars.BarItem.OnClick(DevExpress.XtraBars.BarItemLink link) + 0x108 bytes DevExpress.XtraBars.v11.2.dll!DevExpress.XtraBars.BarBaseButtonItem.OnClick(DevExpress.XtraBars.BarItemLink link) + 0x47 bytes DevExpress.XtraBars.v11.2.dll!DevExpress.XtraBars.BarItemLink.OnLinkClick() + 0x245 bytes DevExpress.XtraBars.v11.2.dll!DevExpress.XtraBars.BarItemLink.OnLinkAction(DevExpress.XtraBars.BarLinkAction action, object actionArgs) + 0xb3 bytes DevExpress.XtraBars.v11.2.dll!DevExpress.XtraBars.BarButtonItemLink.OnLinkAction(DevExpress.XtraBars.BarLinkAction action, object actionArgs) + 0x47e bytes DevExpress.XtraBars.v11.2.dll!DevExpress.XtraBars.BarItemLink.OnLinkActionCore(DevExpress.XtraBars.BarLinkAction action, object actionArgs) + 0x82 bytes DevExpress.XtraBars.v11.2.dll!DevExpress.XtraBars.ViewInfo.BarSelectionInfo.ClickLink(DevExpress.XtraBars.BarItemLink link) + 0x85 bytes DevExpress.XtraBars.v11.2.dll!DevExpress.XtraBars.ViewInfo.BarSelectionInfo.UnPressLink(DevExpress.XtraBars.BarItemLink link) + 0x1e5 bytes DevExpress.XtraBars.v11.2.dll!DevExpress.XtraBars.Ribbon.Handler.BaseRibbonHandler.OnUnPressItem(DevExpress.Utils.DXMouseEventArgs e, DevExpress.XtraBars.Ribbon.ViewInfo.RibbonHitInfo hitInfo) + 0xa7 bytes DevExpress.XtraBars.v11.2.dll!DevExpress.XtraBars.Ribbon.Handler.BaseRibbonHandler.OnUnPress(DevExpress.Utils.DXMouseEventArgs e, DevExpress.XtraBars.Ribbon.ViewInfo.RibbonHitInfo hitInfo) + 0x5f bytes DevExpress.XtraBars.v11.2.dll!DevExpress.XtraBars.Ribbon.Handler.BaseRibbonHandler.OnMouseUp(DevExpress.Utils.DXMouseEventArgs e) + 0x19a bytes DevExpress.XtraBars.v11.2.dll!DevExpress.XtraBars.Ribbon.Handler.RibbonHandler.OnMouseUp(DevExpress.Utils.DXMouseEventArgs e) + 0x47 bytes DevExpress.XtraBars.v11.2.dll!DevExpress.XtraBars.Ribbon.RibbonControl.OnMouseUp(System.Windows.Forms.MouseEventArgs e) + 0x95 bytes System.Windows.Forms.dll!System.Windows.Forms.Control.WmMouseUp(ref System.Windows.Forms.Message m, System.Windows.Forms.MouseButtons button, int clicks) + 0x2d1 bytes System.Windows.Forms.dll!System.Windows.Forms.Control.WndProc(ref System.Windows.Forms.Message m) + 0x93a bytes DevExpress.Utils.v11.2.dll!DevExpress.Utils.Controls.ControlBase.WndProc(ref System.Windows.Forms.Message m) + 0x81 bytes DevExpress.XtraBars.v11.2.dll!DevExpress.XtraBars.Ribbon.RibbonControl.WndProc(ref System.Windows.Forms.Message m) + 0x85 bytes System.Windows.Forms.dll!System.Windows.Forms.Control.ControlNativeWindow.OnMessage(ref System.Windows.Forms.Message m) + 0x13 bytes System.Windows.Forms.dll!System.Windows.Forms.Control.ControlNativeWindow.WndProc(ref System.Windows.Forms.Message m) + 0x31 bytes System.Windows.Forms.dll!System.Windows.Forms.NativeWindow.Callback(System.IntPtr hWnd, int msg, System.IntPtr wparam, System.IntPtr lparam) + 0x96 bytes [Native to Managed Transition] [Managed to Native Transition] DevExpress.Utils.v11.2.dll!DevExpress.Utils.Win.Hook.ControlWndHook.WindowProc(System.IntPtr hWnd, int message, System.IntPtr wParam, System.IntPtr lParam) + 0x159 bytes [Native to Managed Transition] [Managed to Native Transition] System.Windows.Forms.dll!System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(System.IntPtr dwComponentID, int reason, int pvLoopData) + 0x287 bytes System.Windows.Forms.dll!System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(int reason, System.Windows.Forms.ApplicationContext context) + 0x16c bytes System.Windows.Forms.dll!System.Windows.Forms.Application.ThreadContext.RunMessageLoop(int reason, System.Windows.Forms.ApplicationContext context) + 0x61 bytes System.Windows.Forms.dll!System.Windows.Forms.Application.Run(System.Windows.Forms.Form mainForm) + 0x31 bytes Tici.Kraps.Services.dll!Tici.Kraps.Services.Container.DefaultApplicationRunner.Run() Line 41 + 0x17 bytes C# Kraps.exe!Tici.Kraps.Program.Main() Line 105 + 0x9 bytes C# [Native to Managed Transition] [Managed to Native Transition] mscorlib.dll!System.AppDomain.ExecuteAssembly(string assemblyFile, System.Security.Policy.Evidence assemblySecurity, string[] args) + 0x6d bytes Microsoft.VisualStudio.HostingProcess.Utilities.dll!Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly() + 0x2a bytes mscorlib.dll!System.Threading.ThreadHelper.ThreadStart_Context(object state) + 0x63 bytes mscorlib.dll!System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state, bool ignoreSyncCtx) + 0xb0 bytes mscorlib.dll!System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state) + 0x2c bytes mscorlib.dll!System.Threading.ThreadHelper.ThreadStart() + 0x44 bytes [Native to Managed Transition]

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• Best software for taking a "System Information Snapshot"?

  - by djangofan

  I am curious what people would recommend as the best software for taking a system information snapshot? This would be for use in a technical support fashion.

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• System.Web.Services.Protocols.SoapException - Security perssmission issue

  - by Hiscal

  Can any one help me to resolve this error.My website hosted on shared environment. Server Error in '/' Application. System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.Security.SecurityException: Request for the permission of type 'System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed. at System.Security.CodeAccessSecurityEngine.Check(Object demand, StackCrawlMark& stackMark, Boolean isPermSet) at System.Security.CodeAccessPermission.Demand() at System.Net.ServicePointManager.set_CertificatePolicy(ICertificatePolicy value) at BirdieThis.WebService.golfService.BookGolfCourse(CourseBooking oCourseInfo, CoursePlayer oCoursePlayer, CoursePayment oCoursePayment) The action that failed was: Demand The type of the first permission that failed was: System.Security.Permissions.SecurityPermission The first permission that failed was: <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode"/> The demand was for: <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode"/> The granted set of the failing assembly was: <PermissionSet class="System.Security.PermissionSet" version="1"> <IPermission class="System.Security.Permissions.EnvironmentPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Read="TEMP;TMP;USERNAME;OS;COMPUTERNAME"/> <IPermission class="System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Read="D:\Hosting\5457055\html" Write="d:\content\;d:\hosting\" Append="D:\Hosting\5457055\html" PathDiscovery="d:\hosting\"/> <IPermission class="System.Security.Permissions.IsolatedStorageFilePermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Allowed="AssemblyIsolationByUser" UserQuota="9223372036854775807"/> <IPermission class="System.Security.Permissions.ReflectionPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="RestrictedMemberAccess"/> <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="Assertion, Execution, ControlThread, ControlPrincipal, RemotingConfiguration"/> <IPermission class="System.Security.Permissions.UrlIdentityPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Url="file:///D:/Hosting/5457055/html/bin/App_Code.DLL"/> <IPermission class="System.Security.Permissions.ZoneIdentityPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Zone="MyComputer"/> <IPermission class="System.Security.Permissions.KeyContainerPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/> <IPermission class="System.Web.AspNetHostingPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Level="Medium"/> <IPermission class="System.Configuration.ConfigurationPermission, System.Configuration, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" version="1" Unrestricted="true"/> <IPermission class="System.Net.DnsPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/> <IPermission class="System.Drawing.Printing.PrintingPermission, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" version="1" Level="DefaultPrinting"/> <IPermission class="System.Net.Mail.SmtpPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Access="Connect"/> <IPermission class="System.Data.SqlClient.SqlClientPermission, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/> <IPermission class="System.Data.OleDb.OleDbPermission, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/> <IPermission class="System.Data.Odbc.OdbcPermission, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/> <IPermission class="System.Net.WebPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1"> <ConnectAccess> <URI uri="http://.*"/> <URI uri="https://.*"/> </ConnectAccess> </IPermission> <IPermission class="System.Net.SocketPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1"> <ConnectAccess> <ENDPOINT host="*.*.*.*" transport="Tcp" port="3306"/> </ConnectAccess> </IPermission> </PermissionSet> The assembly or AppDomain that failed was: App_Code, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null The method that caused the failure was: golfswitchs.BookGolfResult BookGolfCourse(mygolf.CourseBooking, mygolf.CoursePlayer, mygolf.CoursePayment) The Zone of the assembly that failed was: MyComputer The Url of the assembly that failed was: file:///D:/Hosting/5457055/html/bin/App_Code.DLL --- End of inner exception stack trace --- Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Web.Services.Protocols.SoapException: System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.Security.SecurityException: Request for the permission of type 'System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed. at System.Security.CodeAccessSecurityEngine.Check(Object demand, StackCrawlMark& stackMark, Boolean isPermSet) at System.Security.CodeAccessPermission.Demand() at System.Net.ServicePointManager.set_CertificatePolicy(ICertificatePolicy value) at BirdieThis.WebService.golfService.BookGolfCourse(CourseBooking oCourseInfo, CoursePlayer oCoursePlayer, CoursePayment oCoursePayment) The action that failed was: Demand The type of the first permission that failed was: System.Security.Permissions.SecurityPermission The first permission that failed was: <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode"/> The demand was for: <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode"/> The granted set of the failing assembly was: <PermissionSet class="System.Security.PermissionSet" version="1"> <IPermission class="System.Security.Permissions.EnvironmentPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Read="TEMP;TMP;USERNAME;OS;COMPUTERNAME"/> <IPermission class="System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Read="D:\Hosting\5457055\html" Write="d:\content\;d:\hosting\" Append="D:\Hosting\5457055\html" PathDiscovery="d:\hosting\"/> <IPermission class="System.Security.Permissions.IsolatedStorageFilePermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Allowed="AssemblyIsolationByUser" UserQuota="9223372036854775807"/> <IPermission class="System.Security.Permissions.ReflectionPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="RestrictedMemberAccess"/> <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="Assertion, Execution, ControlThread, ControlPrincipal, RemotingConfiguration"/> <IPermission class="System.Security.Permissions.UrlIdentityPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Url="file:///D:/Hosting/5457055/html/bin/App_Code.DLL"/> <IPermission class="System.Security.Permissions.ZoneIdentityPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Zone="MyComputer"/> <IPermission class="System.Security.Permissions.KeyContainerPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/> <IPermission class="System.Web.AspNetHostingPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Level="Medium"/> <IPermission class="System.Configuration.ConfigurationPermission, System.Configuration, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" version="1" Unrestricted="true"/> <IPermission class="System.Net.DnsPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/> <IPermission class="System.Drawing.Printing.PrintingPermission, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" version="1" Level="DefaultPrinting"/> <IPermission class="System.Net.Mail.SmtpPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Access="Connect"/> <IPermission class="System.Data.SqlClient.SqlClientPermission, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/> <IPermission class="System.Data.OleDb.OleDbPermission, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/> <IPermission class="System.Data.Odbc.OdbcPermission, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/> <IPermission class="System.Net.WebPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1"> <ConnectAccess> <URI uri="http://.*"/> <URI uri="https://.*"/> </ConnectAccess> </IPermission> <IPermission class="System.Net.SocketPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1"> <ConnectAccess> <ENDPOINT host="*.*.*.*" transport="Tcp" port="3306"/> </ConnectAccess> </IPermission> </PermissionSet> The assembly or AppDomain that failed was: App_Code, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null The method that caused the failure was: golfswitchs.BookGolfResult BookGolfCourse(mygolf.CourseBooking, mygolf.CoursePlayer, mygolf.CoursePayment) The Zone of the assembly that failed was: MyComputer The Url of the assembly that failed was: file:///D:/Hosting/5457055/html/bin/App_Code.DLL --- End of inner exception stack trace --- Source Error: Line 446: Line 447: oPayment.PayCurrency = "USD"; Line 448: oResult = oService.BookGolfCourse(oGolfItem, oGolfplayer, oPayment); Line 449: Response.Write(oResult.RetMsg); Line 450: Source File: c:\inetpub\vhosts\cfmdeveloper.com\subdomains\ind103\httpdocs\test.aspx.cs Line: 448 Stack Trace: [SoapException: System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.Security.SecurityException: Request for the permission of type 'System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed. at System.Security.CodeAccessSecurityEngine.Check(Object demand, StackCrawlMark& stackMark, Boolean isPermSet) at System.Security.CodeAccessPermission.Demand() at System.Net.ServicePointManager.set_CertificatePolicy(ICertificatePolicy value) at BirdieThis.WebService.golfService.BookGolfCourse(CourseBooking oCourseInfo, CoursePlayer oCoursePlayer, CoursePayment oCoursePayment) The action that failed was: Demand The type of the first permission that failed was: System.Security.Permissions.SecurityPermission The first permission that failed was: <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode"/> The demand was for: <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="UnmanagedCode"/> The granted set of the failing assembly was: <PermissionSet class="System.Security.PermissionSet" version="1"> <IPermission class="System.Security.Permissions.EnvironmentPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Read="TEMP;TMP;USERNAME;OS;COMPUTERNAME"/> <IPermission class="System.Security.Permissions.FileIOPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Read="D:\Hosting\5457055\html" Write="d:\content\;d:\hosting\" Append="D:\Hosting\5457055\html" PathDiscovery="d:\hosting\"/> <IPermission class="System.Security.Permissions.IsolatedStorageFilePermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Allowed="AssemblyIsolationByUser" UserQuota="9223372036854775807"/> <IPermission class="System.Security.Permissions.ReflectionPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="RestrictedMemberAccess"/> <IPermission class="System.Security.Permissions.SecurityPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Flags="Assertion, Execution, ControlThread, ControlPrincipal, RemotingConfiguration"/> <IPermission class="System.Security.Permissions.UrlIdentityPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Url="file:///D:/Hosting/5457055/html/bin/App_Code.DLL"/> <IPermission class="System.Security.Permissions.ZoneIdentityPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Zone="MyComputer"/> <IPermission class="System.Security.Permissions.KeyContainerPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/> <IPermission class="System.Web.AspNetHostingPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Level="Medium"/> <IPermission class="System.Configuration.ConfigurationPermission, System.Configuration, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" version="1" Unrestricted="true"/> <IPermission class="System.Net.DnsPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/> <IPermission class="System.Drawing.Printing.PrintingPermission, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" version="1" Level="DefaultPrinting"/> <IPermission class="System.Net.Mail.SmtpPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Access="Connect"/> <IPermission class="System.Data.SqlClient.SqlClientPermission, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/> <IPermission class="System.Data.OleDb.OleDbPermission, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/> <IPermission class="System.Data.Odbc.OdbcPermission, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true"/> <IPermission class="System.Net.WebPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1"> <ConnectAccess> <URI uri="http://.*"/> <URI uri="https://.*"/> </ConnectAccess> </IPermission> <IPermission class="System.Net.SocketPermission, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1"> <ConnectAccess> <ENDPOINT host="*.*.*.*" transport="Tcp" port="3306"/> </ConnectAccess> </IPermission> </PermissionSet> The assembly or AppDomain that failed was: App_Code, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null The method that caused the failure was: golfswitchs.BookGolfResult BookGolfCourse(mygolf.CourseBooking, mygolf.CoursePlayer, mygolf.CoursePayment) The Zone of the assembly that failed was: MyComputer The Url of the assembly that failed was: file:///D:/Hosting/5457055/html/bin/App_Code.DLL --- End of inner exception stack trace ---] System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall) +431766 System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters) +204 mygolf.golfService.BookGolfCourse(CourseBooking oCourseInfo, CoursePlayer oCoursePlayer, CoursePayment oCoursePayment) +80 birdiethis.web.test.BookClub() in c:\inetpub\vhosts\cfmdeveloper.com\subdomains\ind103\httpdocs\test.aspx.cs:448 birdiethis.web.test.Page_Load(Object sender, EventArgs e) in c:\inetpub\vhosts\cfmdeveloper.com\subdomains\ind103\httpdocs\test.aspx.cs:28 System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +14 System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +35 System.Web.UI.Control.OnLoad(EventArgs e) +99 System.Web.UI.Control.LoadRecursive() +50 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +627 Version Information: Microsoft .NET Framework Version:2.0.50727.3603; ASP.NET Version:2.0.50727.3082

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• Project compile perfectly but i get unhandled exception and have no idea why??? any clues?

  - by JB

  get unhandled exception that says: System.NullReferenceException: Object reference not set to an instance of an object. at Eagle_Eye_Class_Finder.GetSchedule.GetDataFromNumber(String ID) in C:\Users\Joshua Banks\Desktop\EET Project\Eagle Eye Class Finder\GetSchedule.cs:line 24 at Eagle_Eye_Class_Finder.Form1.button2_Click(Object sender, EventArgs e) in C:\Users\Joshua Banks\Desktop\EET Project\Eagle Eye Class Finder\Form1.cs:line 196 at System.Windows.Forms.Control.OnClick(EventArgs e) at System.Windows.Forms.Button.OnClick(EventArgs e) at System.Windows.Forms.Button.PerformClick() at System.Windows.Forms.Form.ProcessDialogKey(Keys keyData) at System.Windows.Forms.Control.ProcessDialogKey(Keys keyData) at System.Windows.Forms.TextBoxBase.ProcessDialogKey(Keys keyData) at System.Windows.Forms.Control.PreProcessMessage(Message& msg) at System.Windows.Forms.Control.PreProcessControlMessageInternal(Control target, Message& msg) at System.Windows.Forms.Application.ThreadContext.PreTranslateMessage(MSG& msg) Here is my Get Schedule Class: using System; using System.IO; using System.Data; using System.Text; using System.Drawing; using System.Data.OleDb; using System.Collections; using System.ComponentModel; using System.Windows.Forms; using System.Drawing.Printing; using System.Collections.Generic; namespace Eagle_Eye_Class_Finder { public class GetSchedule { public string GetDataFromNumber(string ID) { IDnumber[] IDnumbers = new IDnumber[3]; foreach (IDnumber IDCandidateMatch in IDnumbers) { if (IDCandidateMatch.ID == ID) { StringBuilder myData = new StringBuilder(); myData.AppendLine(IDCandidateMatch.Name); myData.AppendLine(": "); myData.AppendLine(IDCandidateMatch.ID); myData.AppendLine(IDCandidateMatch.year); myData.AppendLine(IDCandidateMatch.class1); myData.AppendLine(IDCandidateMatch.class2); myData.AppendLine(IDCandidateMatch.class3); myData.AppendLine(IDCandidateMatch.class4); //return myData; return myData.ToString(); } } return ""; } public GetSchedule() { IDnumber[] IDnumbers = new IDnumber[3]; IDnumbers[0] = new IDnumber() { Name = "Joshua Banks", ID = "900456317", year = "Senior", class1 = "TEET 4090", class2 = "TEET 3020", class3 = "TEET 3090", class4 = "TEET 4290" }; IDnumbers[1] = new IDnumber() { Name = "Sean Ward", ID = "900456318", year = "Junior", class1 = "ENGNR 4090", class2 = "ENGNR 3020", class3 = "ENGNR 3090", class4 = "ENGNR 4290" }; IDnumbers[2] = new IDnumber() { Name = "Terrell Johnson", ID = "900456319", year = "Sophomore", class1 = "BUS 4090", class2 = "BUS 3020", class3 = "BUS 3090", class4 = "BUS 4290" }; } public class IDnumber { public string Name { get; set; } public string ID { get; set; } public string year { get; set; } public string class1 { get; set; } public string class2 { get; set; } public string class3 { get; set; } public string class4 { get; set; } public static void ProcessNumber(IDnumber myNum) { StringBuilder myData = new StringBuilder(); myData.AppendLine(myNum.Name); myData.AppendLine(": "); myData.AppendLine(myNum.ID); myData.AppendLine(myNum.year); myData.AppendLine(myNum.class1); myData.AppendLine(myNum.class2); myData.AppendLine(myNum.class3); myData.AppendLine(myNum.class4); MessageBox.Show(myData.ToString()); } } } } Here is my Form 1 class: using System; using System.IO; using System.Data; using System.Text; using System.Drawing; using System.Data.OleDb; using System.Collections; using System.Windows.Forms; using System.ComponentModel; using System.Drawing.Printing; using System.Collections.Generic; namespace Eagle_Eye_Class_Finder { /// This form is the entry form, it is the first form the user will see when the app is run. /// public class Form1 : System.Windows.Forms.Form { private System.Windows.Forms.TextBox textBox1; private System.Windows.Forms.ProgressBar progressBar1; private System.Windows.Forms.PictureBox pictureBox1; private System.Windows.Forms.Button button2; private System.Windows.Forms.DateTimePicker dateTimePicker1; private IContainer components; private Timer timer1; private BindingSource form1BindingSource; public static Form Mainform = null; // creates new instance of second form YOURCLASSSCHEDULE SecondForm = new YOURCLASSSCHEDULE(); public Form1() { InitializeComponent(); // TODO: Add any constructor code after InitializeComponent call } /// Clean up any resources being used. protected override void Dispose(bool disposing) { if (disposing) { if (components != null) { components.Dispose(); } } base.Dispose(disposing); } #region Windows Form Designer generated code /// <summary> /// Required method for Designer support - do not modify /// the contents of this method with the code editor. /// </summary> private void InitializeComponent() { this.components = new System.ComponentModel.Container(); System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(Form1)); this.textBox1 = new System.Windows.Forms.TextBox(); this.progressBar1 = new System.Windows.Forms.ProgressBar(); this.pictureBox1 = new System.Windows.Forms.PictureBox(); this.button2 = new System.Windows.Forms.Button(); this.dateTimePicker1 = new System.Windows.Forms.DateTimePicker(); this.timer1 = new System.Windows.Forms.Timer(this.components); this.form1BindingSource = new System.Windows.Forms.BindingSource(this.components); ((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).BeginInit(); ((System.ComponentModel.ISupportInitialize)(this.form1BindingSource)).BeginInit(); this.SuspendLayout(); // // textBox1 // this.textBox1.BackColor = System.Drawing.SystemColors.ActiveCaption; this.textBox1.DataBindings.Add(new System.Windows.Forms.Binding("Text", this.form1BindingSource, "Text", true, System.Windows.Forms.DataSourceUpdateMode.OnValidation, null, "900456317")); this.textBox1.Location = new System.Drawing.Point(328, 280); this.textBox1.Name = "textBox1"; this.textBox1.Size = new System.Drawing.Size(208, 20); this.textBox1.TabIndex = 2; this.textBox1.TextChanged += new System.EventHandler(this.textBox1_TextChanged); // // progressBar1 // this.progressBar1.Location = new System.Drawing.Point(258, 410); this.progressBar1.MarqueeAnimationSpeed = 10; this.progressBar1.Name = "progressBar1"; this.progressBar1.Size = new System.Drawing.Size(344, 8); this.progressBar1.TabIndex = 3; this.progressBar1.Click += new System.EventHandler(this.progressBar1_Click); // // pictureBox1 // this.pictureBox1.BackColor = System.Drawing.SystemColors.ControlLightLight; this.pictureBox1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D; this.pictureBox1.Image = ((System.Drawing.Image)(resources.GetObject("pictureBox1.Image"))); this.pictureBox1.Location = new System.Drawing.Point(680, 400); this.pictureBox1.Name = "pictureBox1"; this.pictureBox1.Size = new System.Drawing.Size(120, 112); this.pictureBox1.TabIndex = 4; this.pictureBox1.TabStop = false; this.pictureBox1.Click += new System.EventHandler(this.pictureBox1_Click); // // button2 // this.button2.Font = new System.Drawing.Font("Mistral", 15.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0))); this.button2.Image = ((System.Drawing.Image)(resources.GetObject("button2.Image"))); this.button2.Location = new System.Drawing.Point(699, 442); this.button2.Name = "button2"; this.button2.Size = new System.Drawing.Size(78, 28); this.button2.TabIndex = 5; this.button2.Text = "OK"; this.button2.Click += new System.EventHandler(this.button2_Click); // // dateTimePicker1 // this.dateTimePicker1.Location = new System.Drawing.Point(336, 104); this.dateTimePicker1.Name = "dateTimePicker1"; this.dateTimePicker1.Size = new System.Drawing.Size(200, 20); this.dateTimePicker1.TabIndex = 6; this.dateTimePicker1.ValueChanged += new System.EventHandler(this.dateTimePicker1_ValueChanged); // // timer1 // this.timer1.Tick += new System.EventHandler(this.timer1_Tick); // // form1BindingSource // this.form1BindingSource.DataSource = typeof(Eagle_Eye_Class_Finder.Form1); // // Form1 // this.AcceptButton = this.button2; this.AutoScaleBaseSize = new System.Drawing.Size(5, 13); this.BackgroundImage = ((System.Drawing.Image)(resources.GetObject("$this.BackgroundImage"))); this.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Stretch; this.ClientSize = new System.Drawing.Size(856, 556); this.Controls.Add(this.dateTimePicker1); this.Controls.Add(this.button2); this.Controls.Add(this.pictureBox1); this.Controls.Add(this.progressBar1); this.Controls.Add(this.textBox1); this.Name = "Form1"; this.Text = "Eagle Eye Class Finder"; this.Load += new System.EventHandler(this.Form1_Load); ((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).EndInit(); ((System.ComponentModel.ISupportInitialize)(this.form1BindingSource)).EndInit(); this.ResumeLayout(false); this.PerformLayout(); } #endregion /// The main entry point for the application. [STAThread] static void Main() { Application.Run(new Form1()); } public void Form1_Load(object sender, System.EventArgs e) { } public void textBox1_TextChanged(object sender, System.EventArgs e) { //allows only numbers to be entered in textbox string Str = textBox1.Text.Trim(); double Num; bool isNum = double.TryParse(Str, out Num); if (isNum) Console.ReadLine(); else MessageBox.Show("Enter A Valid ID Number!"); } public void button2_Click(object sender, System.EventArgs e) { string text = textBox1.Text; Mainform = this; this.Hide(); GetSchedule myScheduleFinder = new GetSchedule(); string result = myScheduleFinder.GetDataFromNumber(text); if (!string.IsNullOrEmpty(result)) { MessageBox.Show(result); } else { MessageBox.Show("Enter A Valid ID Number!"); } } public void dateTimePicker1_ValueChanged(object sender, System.EventArgs e) { } public void pictureBox1_Click(object sender, System.EventArgs e) { } public void progressBar1_Click(object sender, EventArgs e) { //this.progressBar1 = new System.progressBar1(); //progressBar1.Maximum = 200; //progressBar1.Minimum = 0; //progressBar1.Step = 20; } private void timer1_Tick(object sender, EventArgs e) { //if (progressBar1.Value >= 200 ) //{ //progressBar1.Value = 0; //} //return; //} //progressBar1.Value != 20; } } } here is my form 2 class: using System; using System.Drawing; using System.Collections; using System.ComponentModel; using System.Windows.Forms; namespace Eagle_Eye_Class_Finder { /// /// Summary description for Form2. /// public class YOURCLASSSCHEDULE : System.Windows.Forms.Form { public System.Windows.Forms.LinkLabel linkLabel1; public System.Windows.Forms.LinkLabel linkLabel2; public System.Windows.Forms.LinkLabel linkLabel3; public System.Windows.Forms.LinkLabel linkLabel4; private Button button1; /// Required designer variable. public System.ComponentModel.Container components = null; public YOURCLASSSCHEDULE() { // InitializeComponent(); // TODO: Add any constructor code after InitializeComponent call } /// Clean up any resources being used. protected override void Dispose(bool disposing) { if (disposing) { if (components != null) { components.Dispose(); } } base.Dispose(disposing); } #region Windows Form Designer generated code /// <summary> /// Required method for Designer support - do not modify /// the contents of this method with the code editor. /// </summary> private void InitializeComponent() { System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(YOURCLASSSCHEDULE)); this.linkLabel1 = new System.Windows.Forms.LinkLabel(); this.linkLabel2 = new System.Windows.Forms.LinkLabel(); this.linkLabel3 = new System.Windows.Forms.LinkLabel(); this.linkLabel4 = new System.Windows.Forms.LinkLabel(); this.button1 = new System.Windows.Forms.Button(); this.SuspendLayout(); // // linkLabel1 // this.linkLabel1.BackColor = System.Drawing.SystemColors.ActiveCaption; this.linkLabel1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D; this.linkLabel1.Font = new System.Drawing.Font("Times New Roman", 14.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0))); this.linkLabel1.LinkArea = new System.Windows.Forms.LinkArea(0, 7); this.linkLabel1.LinkBehavior = System.Windows.Forms.LinkBehavior.HoverUnderline; this.linkLabel1.Location = new System.Drawing.Point(41, 123); this.linkLabel1.Name = "linkLabel1"; this.linkLabel1.Size = new System.Drawing.Size(288, 32); this.linkLabel1.TabIndex = 1; this.linkLabel1.TabStop = true; this.linkLabel1.Text = "Class 1"; this.linkLabel1.TextAlign = System.Drawing.ContentAlignment.MiddleCenter; this.linkLabel1.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler(this.linkLabel1_LinkClicked); // // linkLabel2 // this.linkLabel2.BackColor = System.Drawing.SystemColors.ActiveCaption; this.linkLabel2.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D; this.linkLabel2.Font = new System.Drawing.Font("Times New Roman", 14.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0))); this.linkLabel2.LinkBehavior = System.Windows.Forms.LinkBehavior.HoverUnderline; this.linkLabel2.Location = new System.Drawing.Point(467, 123); this.linkLabel2.Name = "linkLabel2"; this.linkLabel2.Size = new System.Drawing.Size(288, 32); this.linkLabel2.TabIndex = 2; this.linkLabel2.TabStop = true; this.linkLabel2.Text = "Class 2"; this.linkLabel2.TextAlign = System.Drawing.ContentAlignment.MiddleCenter; this.linkLabel2.VisitedLinkColor = System.Drawing.Color.Navy; this.linkLabel2.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler(this.linkLabel2_LinkClicked); // // linkLabel3 // this.linkLabel3.BackColor = System.Drawing.SystemColors.ActiveCaption; this.linkLabel3.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D; this.linkLabel3.Font = new System.Drawing.Font("Times New Roman", 14.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0))); this.linkLabel3.LinkBehavior = System.Windows.Forms.LinkBehavior.HoverUnderline; this.linkLabel3.Location = new System.Drawing.Point(41, 311); this.linkLabel3.Name = "linkLabel3"; this.linkLabel3.Size = new System.Drawing.Size(288, 32); this.linkLabel3.TabIndex = 3; this.linkLabel3.TabStop = true; this.linkLabel3.Text = "Class 3"; this.linkLabel3.TextAlign = System.Drawing.ContentAlignment.MiddleCenter; this.linkLabel3.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler(this.linkLabel3_LinkClicked); // // linkLabel4 // this.linkLabel4.BackColor = System.Drawing.SystemColors.ActiveCaption; this.linkLabel4.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D; this.linkLabel4.Font = new System.Drawing.Font("Times New Roman", 14.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0))); this.linkLabel4.LinkBehavior = System.Windows.Forms.LinkBehavior.HoverUnderline; this.linkLabel4.Location = new System.Drawing.Point(467, 311); this.linkLabel4.Name = "linkLabel4"; this.linkLabel4.Size = new System.Drawing.Size(288, 32); this.linkLabel4.TabIndex = 4; this.linkLabel4.TabStop = true; this.linkLabel4.Text = "Class 4"; this.linkLabel4.TextAlign = System.Drawing.ContentAlignment.MiddleCenter; this.linkLabel4.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler(this.linkLabel4_LinkClicked); // // button1 // this.button1.BackColor = System.Drawing.SystemColors.ActiveCaptionText; this.button1.FlatAppearance.BorderColor = System.Drawing.Color.FromArgb(((int)(((byte)(0)))), ((int)(((byte)(0)))), ((int)(((byte)(64))))); this.button1.FlatStyle = System.Windows.Forms.FlatStyle.Popup; this.button1.Font = new System.Drawing.Font("Pristina", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0))); this.button1.ForeColor = System.Drawing.SystemColors.ActiveCaption; this.button1.ImageAlign = System.Drawing.ContentAlignment.TopCenter; this.button1.Location = new System.Drawing.Point(358, 206); this.button1.Name = "button1"; this.button1.Size = new System.Drawing.Size(101, 25); this.button1.TabIndex = 5; this.button1.Text = "Go Back"; this.button1.UseVisualStyleBackColor = false; this.button1.Click += new System.EventHandler(this.button1_Click); // // YOURCLASSSCHEDULE // this.AutoScaleBaseSize = new System.Drawing.Size(6, 15); this.BackgroundImage = ((System.Drawing.Image)(resources.GetObject("$this.BackgroundImage"))); this.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Stretch; this.ClientSize = new System.Drawing.Size(790, 482); this.Controls.Add(this.button1); this.Controls.Add(this.linkLabel4); this.Controls.Add(this.linkLabel3); this.Controls.Add(this.linkLabel2); this.Controls.Add(this.linkLabel1); this.Font = new System.Drawing.Font("OldDreadfulNo7 BT", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0))); this.Name = "YOURCLASSSCHEDULE"; this.Text = "Your Classes"; this.Load += new System.EventHandler(this.Form2_Load); this.ResumeLayout(false); } #endregion public void Form2_Load(object sender, System.EventArgs e) { // if (text == "900456317") // { //} } public void linkLabel1_LinkClicked(object sender, System.Windows.Forms.LinkLabelLinkClickedEventArgs e) { System.Diagnostics.Process.Start("http://www.georgiasouthern.edu/map/"); } private void linkLabel2_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e) { System.Diagnostics.Process.Start("http://www.georgiasouthern.edu/map/"); } private void linkLabel3_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e) { System.Diagnostics.Process.Start("http://www.georgiasouthern.edu/map/"); } private void linkLabel4_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e) { System.Diagnostics.Process.Start("http://www.georgiasouthern.edu/map/"); } private void button1_Click(object sender, EventArgs e) { Form1 form1 = new Form1(); form1.Show(); this.Hide(); } } }

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• Distributed transactions

  - by javi

  Hello! I've a question regarding distributed transactions. Let's assume I have 3 transaction programs: Transaction A begin a=read(A) b=read(B) c=a+b write(C,c) commit Transaction B begin a=read(A) a=a+1 write(A,a) commit Transaction C begin c=read(C) c=c*2 write(A,c) commit So there are 5 pairs of critical operations: C2-A5, A2-B4, B4-C4, B2-C4, A2-C4. I should ensure integrity and confidentiality, do you have any idea of how to achieve it? Thank you in advance!

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• Have a program/winform that outputs name and classes in message box, my objective is to write the cl

  - by JB

  Here is my Get Schedule Class: using System; using System.IO; using System.Data; using System.Text; using System.Drawing; using System.Data.OleDb; using System.Collections; using System.ComponentModel; using System.Windows.Forms; using System.Drawing.Printing; using System.Collections.Generic; namespace Eagle_Eye_Class_Finder { public class GetSchedule { public string GetDataFromNumber(string ID) { IDnumber[] IDnumbers = new IDnumber[3]; foreach (IDnumber IDCandidateMatch in IDnumbers) { if (IDCandidateMatch.ID == ID) { StringBuilder myData = new StringBuilder(); myData.AppendLine(IDCandidateMatch.Name); myData.AppendLine(": "); myData.AppendLine(IDCandidateMatch.ID); myData.AppendLine(IDCandidateMatch.year); myData.AppendLine(IDCandidateMatch.class1); myData.AppendLine(IDCandidateMatch.class2); myData.AppendLine(IDCandidateMatch.class3); myData.AppendLine(IDCandidateMatch.class4); //return myData; return myData.ToString(); } } return ""; } public GetSchedule() { IDnumber[] IDnumbers = new IDnumber[3]; IDnumbers[0] = new IDnumber() { Name = "Joshua Banks", ID = "900456317", year = "Senior", class1 = "TEET 4090", class2 = "TEET 3020", class3 = "TEET 3090", class4 = "TEET 4290" }; IDnumbers[1] = new IDnumber() { Name = "Sean Ward", ID = "900456318", year = "Junior", class1 = "ENGNR 4090", class2 = "ENGNR 3020", class3 = "ENGNR 3090", class4 = "ENGNR 4290" }; IDnumbers[2] = new IDnumber() { Name = "Terrell Johnson", ID = "900456319", year = "Sophomore", class1 = "BUS 4090", class2 = "BUS 3020", class3 = "BUS 3090", class4 = "BUS 4290" }; } public class IDnumber { public string Name { get; set; } public string ID { get; set; } public string year { get; set; } public string class1 { get; set; } public string class2 { get; set; } public string class3 { get; set; } public string class4 { get; set; } public static void ProcessNumber(IDnumber myNum) { StringBuilder myData = new StringBuilder(); myData.AppendLine(myNum.Name); myData.AppendLine(": "); myData.AppendLine(myNum.ID); myData.AppendLine(myNum.year); myData.AppendLine(myNum.class1); myData.AppendLine(myNum.class2); myData.AppendLine(myNum.class3); myData.AppendLine(myNum.class4); MessageBox.Show(myData.ToString()); } } } } Here is my Form 1 class: using System; using System.IO; using System.Data; using System.Text; using System.Drawing; using System.Data.OleDb; using System.Collections; using System.Windows.Forms; using System.ComponentModel; using System.Drawing.Printing; using System.Collections.Generic; namespace Eagle_Eye_Class_Finder { /// This form is the entry form, it is the first form the user will see when the app is run. /// public class Form1 : System.Windows.Forms.Form { private System.Windows.Forms.TextBox textBox1; private System.Windows.Forms.ProgressBar progressBar1; private System.Windows.Forms.PictureBox pictureBox1; private System.Windows.Forms.Button button2; private System.Windows.Forms.DateTimePicker dateTimePicker1; private IContainer components; private Timer timer1; private BindingSource form1BindingSource; public static Form Mainform = null; // creates new instance of second form YOURCLASSSCHEDULE SecondForm = new YOURCLASSSCHEDULE(); public Form1() { InitializeComponent(); // TODO: Add any constructor code after InitializeComponent call } /// Clean up any resources being used. protected override void Dispose(bool disposing) { if (disposing) { if (components != null) { components.Dispose(); } } base.Dispose(disposing); } #region Windows Form Designer generated code /// <summary> /// Required method for Designer support - do not modify /// the contents of this method with the code editor. /// </summary> private void InitializeComponent() { this.components = new System.ComponentModel.Container(); System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(Form1)); this.textBox1 = new System.Windows.Forms.TextBox(); this.progressBar1 = new System.Windows.Forms.ProgressBar(); this.pictureBox1 = new System.Windows.Forms.PictureBox(); this.button2 = new System.Windows.Forms.Button(); this.dateTimePicker1 = new System.Windows.Forms.DateTimePicker(); this.timer1 = new System.Windows.Forms.Timer(this.components); this.form1BindingSource = new System.Windows.Forms.BindingSource(this.components); ((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).BeginInit(); ((System.ComponentModel.ISupportInitialize)(this.form1BindingSource)).BeginInit(); this.SuspendLayout(); // // textBox1 // this.textBox1.BackColor = System.Drawing.SystemColors.ActiveCaption; this.textBox1.DataBindings.Add(new System.Windows.Forms.Binding("Text", this.form1BindingSource, "Text", true, System.Windows.Forms.DataSourceUpdateMode.OnValidation, null, "900456317")); this.textBox1.Location = new System.Drawing.Point(328, 280); this.textBox1.Name = "textBox1"; this.textBox1.Size = new System.Drawing.Size(208, 20); this.textBox1.TabIndex = 2; this.textBox1.TextChanged += new System.EventHandler(this.textBox1_TextChanged); // // progressBar1 // this.progressBar1.Location = new System.Drawing.Point(258, 410); this.progressBar1.MarqueeAnimationSpeed = 10; this.progressBar1.Name = "progressBar1"; this.progressBar1.Size = new System.Drawing.Size(344, 8); this.progressBar1.TabIndex = 3; this.progressBar1.Click += new System.EventHandler(this.progressBar1_Click); // // pictureBox1 // this.pictureBox1.BackColor = System.Drawing.SystemColors.ControlLightLight; this.pictureBox1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D; this.pictureBox1.Image = ((System.Drawing.Image)(resources.GetObject("pictureBox1.Image"))); this.pictureBox1.Location = new System.Drawing.Point(680, 400); this.pictureBox1.Name = "pictureBox1"; this.pictureBox1.Size = new System.Drawing.Size(120, 112); this.pictureBox1.TabIndex = 4; this.pictureBox1.TabStop = false; this.pictureBox1.Click += new System.EventHandler(this.pictureBox1_Click); // // button2 // this.button2.Font = new System.Drawing.Font("Mistral", 15.75F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0))); this.button2.Image = ((System.Drawing.Image)(resources.GetObject("button2.Image"))); this.button2.Location = new System.Drawing.Point(699, 442); this.button2.Name = "button2"; this.button2.Size = new System.Drawing.Size(78, 28); this.button2.TabIndex = 5; this.button2.Text = "OK"; this.button2.Click += new System.EventHandler(this.button2_Click); // // dateTimePicker1 // this.dateTimePicker1.Location = new System.Drawing.Point(336, 104); this.dateTimePicker1.Name = "dateTimePicker1"; this.dateTimePicker1.Size = new System.Drawing.Size(200, 20); this.dateTimePicker1.TabIndex = 6; this.dateTimePicker1.ValueChanged += new System.EventHandler(this.dateTimePicker1_ValueChanged); // // timer1 // this.timer1.Tick += new System.EventHandler(this.timer1_Tick); // // form1BindingSource // this.form1BindingSource.DataSource = typeof(Eagle_Eye_Class_Finder.Form1); // // Form1 // this.AcceptButton = this.button2; this.AutoScaleBaseSize = new System.Drawing.Size(5, 13); this.BackgroundImage = ((System.Drawing.Image)(resources.GetObject("$this.BackgroundImage"))); this.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Stretch; this.ClientSize = new System.Drawing.Size(856, 556); this.Controls.Add(this.dateTimePicker1); this.Controls.Add(this.button2); this.Controls.Add(this.pictureBox1); this.Controls.Add(this.progressBar1); this.Controls.Add(this.textBox1); this.Name = "Form1"; this.Text = "Eagle Eye Class Finder"; this.Load += new System.EventHandler(this.Form1_Load); ((System.ComponentModel.ISupportInitialize)(this.pictureBox1)).EndInit(); ((System.ComponentModel.ISupportInitialize)(this.form1BindingSource)).EndInit(); this.ResumeLayout(false); this.PerformLayout(); } #endregion /// The main entry point for the application. [STAThread] static void Main() { Application.Run(new Form1()); } public void Form1_Load(object sender, System.EventArgs e) { } public void textBox1_TextChanged(object sender, System.EventArgs e) { //allows only numbers to be entered in textbox string Str = textBox1.Text.Trim(); double Num; bool isNum = double.TryParse(Str, out Num); if (isNum) Console.ReadLine(); else MessageBox.Show("Enter A Valid ID Number!"); } public void button2_Click(object sender, System.EventArgs e) { string text = textBox1.Text; Mainform = this; this.Hide(); GetSchedule myScheduleFinder = new GetSchedule(); string result = myScheduleFinder.GetDataFromNumber(text); if (!string.IsNullOrEmpty(result)) { MessageBox.Show(result); } else { MessageBox.Show("Enter A Valid ID Number!"); } } public void dateTimePicker1_ValueChanged(object sender, System.EventArgs e) { } public void pictureBox1_Click(object sender, System.EventArgs e) { } public void progressBar1_Click(object sender, EventArgs e) { //this.progressBar1 = new System.progressBar1(); //progressBar1.Maximum = 200; //progressBar1.Minimum = 0; //progressBar1.Step = 20; } private void timer1_Tick(object sender, EventArgs e) { //if (progressBar1.Value >= 200 ) //{ //progressBar1.Value = 0; //} //return; //} //progressBar1.Value != 20; } } } here is my form 2 class: using System; using System.Drawing; using System.Collections; using System.ComponentModel; using System.Windows.Forms; namespace Eagle_Eye_Class_Finder { /// <summary> /// Summary description for Form2. /// </summary> public class YOURCLASSSCHEDULE : System.Windows.Forms.Form { public System.Windows.Forms.LinkLabel linkLabel1; public System.Windows.Forms.LinkLabel linkLabel2; public System.Windows.Forms.LinkLabel linkLabel3; public System.Windows.Forms.LinkLabel linkLabel4; private Button button1; /// Required designer variable. public System.ComponentModel.Container components = null; public YOURCLASSSCHEDULE() { // InitializeComponent(); // TODO: Add any constructor code after InitializeComponent call } /// Clean up any resources being used. protected override void Dispose(bool disposing) { if (disposing) { if (components != null) { components.Dispose(); } } base.Dispose(disposing); } #region Windows Form Designer generated code /// <summary> /// Required method for Designer support - do not modify /// the contents of this method with the code editor. /// </summary> private void InitializeComponent() { System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(YOURCLASSSCHEDULE)); this.linkLabel1 = new System.Windows.Forms.LinkLabel(); this.linkLabel2 = new System.Windows.Forms.LinkLabel(); this.linkLabel3 = new System.Windows.Forms.LinkLabel(); this.linkLabel4 = new System.Windows.Forms.LinkLabel(); this.button1 = new System.Windows.Forms.Button(); this.SuspendLayout(); // // linkLabel1 // this.linkLabel1.BackColor = System.Drawing.SystemColors.ActiveCaption; this.linkLabel1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D; this.linkLabel1.Font = new System.Drawing.Font("Times New Roman", 14.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0))); this.linkLabel1.LinkArea = new System.Windows.Forms.LinkArea(0, 7); this.linkLabel1.LinkBehavior = System.Windows.Forms.LinkBehavior.HoverUnderline; this.linkLabel1.Location = new System.Drawing.Point(41, 123); this.linkLabel1.Name = "linkLabel1"; this.linkLabel1.Size = new System.Drawing.Size(288, 32); this.linkLabel1.TabIndex = 1; this.linkLabel1.TabStop = true; this.linkLabel1.Text = "Class 1"; this.linkLabel1.TextAlign = System.Drawing.ContentAlignment.MiddleCenter; this.linkLabel1.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler(this.linkLabel1_LinkClicked); // // linkLabel2 // this.linkLabel2.BackColor = System.Drawing.SystemColors.ActiveCaption; this.linkLabel2.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D; this.linkLabel2.Font = new System.Drawing.Font("Times New Roman", 14.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0))); this.linkLabel2.LinkBehavior = System.Windows.Forms.LinkBehavior.HoverUnderline; this.linkLabel2.Location = new System.Drawing.Point(467, 123); this.linkLabel2.Name = "linkLabel2"; this.linkLabel2.Size = new System.Drawing.Size(288, 32); this.linkLabel2.TabIndex = 2; this.linkLabel2.TabStop = true; this.linkLabel2.Text = "Class 2"; this.linkLabel2.TextAlign = System.Drawing.ContentAlignment.MiddleCenter; this.linkLabel2.VisitedLinkColor = System.Drawing.Color.Navy; this.linkLabel2.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler(this.linkLabel2_LinkClicked); // // linkLabel3 // this.linkLabel3.BackColor = System.Drawing.SystemColors.ActiveCaption; this.linkLabel3.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D; this.linkLabel3.Font = new System.Drawing.Font("Times New Roman", 14.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0))); this.linkLabel3.LinkBehavior = System.Windows.Forms.LinkBehavior.HoverUnderline; this.linkLabel3.Location = new System.Drawing.Point(41, 311); this.linkLabel3.Name = "linkLabel3"; this.linkLabel3.Size = new System.Drawing.Size(288, 32); this.linkLabel3.TabIndex = 3; this.linkLabel3.TabStop = true; this.linkLabel3.Text = "Class 3"; this.linkLabel3.TextAlign = System.Drawing.ContentAlignment.MiddleCenter; this.linkLabel3.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler(this.linkLabel3_LinkClicked); // // linkLabel4 // this.linkLabel4.BackColor = System.Drawing.SystemColors.ActiveCaption; this.linkLabel4.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D; this.linkLabel4.Font = new System.Drawing.Font("Times New Roman", 14.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0))); this.linkLabel4.LinkBehavior = System.Windows.Forms.LinkBehavior.HoverUnderline; this.linkLabel4.Location = new System.Drawing.Point(467, 311); this.linkLabel4.Name = "linkLabel4"; this.linkLabel4.Size = new System.Drawing.Size(288, 32); this.linkLabel4.TabIndex = 4; this.linkLabel4.TabStop = true; this.linkLabel4.Text = "Class 4"; this.linkLabel4.TextAlign = System.Drawing.ContentAlignment.MiddleCenter; this.linkLabel4.LinkClicked += new System.Windows.Forms.LinkLabelLinkClickedEventHandler(this.linkLabel4_LinkClicked); // // button1 // this.button1.BackColor = System.Drawing.SystemColors.ActiveCaptionText; this.button1.FlatAppearance.BorderColor = System.Drawing.Color.FromArgb(((int)(((byte)(0)))), ((int)(((byte)(0)))), ((int)(((byte)(64))))); this.button1.FlatStyle = System.Windows.Forms.FlatStyle.Popup; this.button1.Font = new System.Drawing.Font("Pristina", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0))); this.button1.ForeColor = System.Drawing.SystemColors.ActiveCaption; this.button1.ImageAlign = System.Drawing.ContentAlignment.TopCenter; this.button1.Location = new System.Drawing.Point(358, 206); this.button1.Name = "button1"; this.button1.Size = new System.Drawing.Size(101, 25); this.button1.TabIndex = 5; this.button1.Text = "Go Back"; this.button1.UseVisualStyleBackColor = false; this.button1.Click += new System.EventHandler(this.button1_Click); // // YOURCLASSSCHEDULE // this.AutoScaleBaseSize = new System.Drawing.Size(6, 15); this.BackgroundImage = ((System.Drawing.Image)(resources.GetObject("$this.BackgroundImage"))); this.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Stretch; this.ClientSize = new System.Drawing.Size(790, 482); this.Controls.Add(this.button1); this.Controls.Add(this.linkLabel4); this.Controls.Add(this.linkLabel3); this.Controls.Add(this.linkLabel2); this.Controls.Add(this.linkLabel1); this.Font = new System.Drawing.Font("OldDreadfulNo7 BT", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0))); this.Name = "YOURCLASSSCHEDULE"; this.Text = "Your Classes"; this.Load += new System.EventHandler(this.Form2_Load); this.ResumeLayout(false); } #endregion public void Form2_Load(object sender, System.EventArgs e) { // if (text == "900456317") // { //} } public void linkLabel1_LinkClicked(object sender, System.Windows.Forms.LinkLabelLinkClickedEventArgs e) { System.Diagnostics.Process.Start("http://www.georgiasouthern.edu/map/"); } private void linkLabel2_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e) { System.Diagnostics.Process.Start("http://www.georgiasouthern.edu/map/"); } private void linkLabel3_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e) { System.Diagnostics.Process.Start("http://www.georgiasouthern.edu/map/"); } private void linkLabel4_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e) { System.Diagnostics.Process.Start("http://www.georgiasouthern.edu/map/"); } private void button1_Click(object sender, EventArgs e) { Form1 form1 = new Form1(); form1.Show(); this.Hide(); } } }

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• How do i enable transactions

  - by acidzombie24

  I have a similar question of how to check if you are in a transaction. Instead of checking how do i allow nested transactions? I am using Microsoft SQL File Database with ADO.NET. I seen examples using tsql and examples starting transactions using begin and using transaction names. When calling connection.BeginTransaction i call another function pass in the same connection and it calls BeginTransaction again which gives me the exception SqlConnection does not support parallel transactions. It appears many microsoft variants allow this but i cant figure out how to do it with my .mdf file. How do i allow nested transactions with a Microsoft SQL File Database using C# and ADO.NET?

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• Transactions in MVC asp.net

  - by bergin

  Hi, Was wondering if there are any transactions support in asp.net for MVC 2? i.e. commit & rollback? I have a few slightly risky db transacts which i'd prefer firmed up with transactions. could the system transactions namespace be incorporated into a respository of db calls?

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• Transactions in hibernate

  - by kumar1425

  Hi I new to hibernate In my project, i need to handle transactions. How to handle declarative transactions with in two classes Examples: //class 1 class A{ createA() { insert(A); } } //class 2 class B { createB() { insert(B); } } //class 3 @Transaction(Exception.class) class C { test() { create(A); create(B); } } As per the above code is there any possibility to handle transactions, in such a way that if the insert in classA success and the insert in the classB fails then the transaction should rollback and remove the record inserted in the table A corresponding to the Class A please help me with this using declarative transactions.... Thanks in adavace....

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• NullReferenceException when changing skin/theme via Application.Current.Resources

  - by CoolCat

  I am writing an wpf application with multiple skins. The code to switch theme is as below: try { Application.Current.Resources.MergedDictionaries.Add( resource ); } catch( Exception ex ) { } The first time the code is called (to switch to a new theme), it is executed successfully; however, any subsequent calls to the same code would throw System.NullReferenceException. The way I set up my themes are similar to what described here: http://www.codewrecks.com/blog/index.php/2008/05/22/simple-skinnable-and-theme-management-in-wpf-user-interface/. Has anyone seen this error before? How do I go about debugging this since the exception is thrown else where? Any help is greatly appreciated. StackTrace: at System.Windows.EffectiveValueEntry.GetFlattenedEntry(RequestFlags requests) at System.Windows.DependencyObject.EvaluateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry newEntry, OperationType operationType) at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, OperationType operationType) at System.Windows.StyleHelper.ApplyStyleOrTemplateValue(FrameworkObject fo, DependencyProperty dp) at System.Windows.StyleHelper.InvalidateContainerDependents(DependencyObject container, FrugalStructList`1& exclusionContainerDependents, FrugalStructList`1& oldContainerDependents, FrugalStructList`1& newContainerDependents) at System.Windows.StyleHelper.DoStyleInvalidations(FrameworkElement fe, FrameworkContentElement fce, Style oldStyle, Style newStyle) at System.Windows.StyleHelper.UpdateStyleCache(FrameworkElement fe, FrameworkContentElement fce, Style oldStyle, Style newStyle, Style& styleCache) at System.Windows.FrameworkElement.OnStyleChanged(DependencyObject d, DependencyPropertyChangedEventArgs e) at System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e) at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e) at System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args) at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, OperationType operationType) at System.Windows.DependencyObject.InvalidateProperty(DependencyProperty dp) at System.Windows.FrameworkElement.UpdateStyleProperty() at System.Windows.TreeWalkHelper.InvalidateStyleAndReferences(DependencyObject d, ResourcesChangeInfo info, Boolean containsTypeOfKey) at System.Windows.TreeWalkHelper.OnResourcesChanged(DependencyObject d, ResourcesChangeInfo info, Boolean raiseResourceChangedEvent) at System.Windows.TreeWalkHelper.OnResourcesChangedCallback(DependencyObject d, ResourcesChangeInfo info) at System.Windows.DescendentsWalker`1._VisitNode(DependencyObject d) at System.Windows.DescendentsWalker`1.VisitNode(FrameworkElement fe) at System.Windows.DescendentsWalker`1.VisitNode(DependencyObject d) at System.Windows.DescendentsWalker`1.WalkLogicalChildren(FrameworkElement feParent, FrameworkContentElement fceParent, IEnumerator logicalChildren) at System.Windows.DescendentsWalker`1.WalkFrameworkElementLogicalThenVisualChildren(FrameworkElement feParent, Boolean hasLogicalChildren) at System.Windows.DescendentsWalker`1.IterateChildren(DependencyObject d) at System.Windows.DescendentsWalker`1._VisitNode(DependencyObject d) at System.Windows.DescendentsWalker`1.VisitNode(FrameworkElement fe) at System.Windows.DescendentsWalker`1.VisitNode(DependencyObject d) at System.Windows.DescendentsWalker`1.WalkLogicalChildren(FrameworkElement feParent, FrameworkContentElement fceParent, IEnumerator logicalChildren) at System.Windows.DescendentsWalker`1.WalkFrameworkElementLogicalThenVisualChildren(FrameworkElement feParent, Boolean hasLogicalChildren) at System.Windows.DescendentsWalker`1.IterateChildren(DependencyObject d) at System.Windows.DescendentsWalker`1._VisitNode(DependencyObject d) at System.Windows.DescendentsWalker`1.VisitNode(FrameworkElement fe) at System.Windows.DescendentsWalker`1.VisitNode(DependencyObject d) at System.Windows.DescendentsWalker`1.WalkLogicalChildren(FrameworkElement feParent, FrameworkContentElement fceParent, IEnumerator logicalChildren) at System.Windows.DescendentsWalker`1.WalkFrameworkElementLogicalThenVisualChildren(FrameworkElement feParent, Boolean hasLogicalChildren) at System.Windows.DescendentsWalker`1.IterateChildren(DependencyObject d) at System.Windows.DescendentsWalker`1._VisitNode(DependencyObject d) at System.Windows.DescendentsWalker`1.VisitNode(FrameworkElement fe) at System.Windows.DescendentsWalker`1.VisitNode(DependencyObject d) at System.Windows.DescendentsWalker`1.WalkLogicalChildren(FrameworkElement feParent, FrameworkContentElement fceParent, IEnumerator logicalChildren) at System.Windows.DescendentsWalker`1.WalkFrameworkElementLogicalThenVisualChildren(FrameworkElement feParent, Boolean hasLogicalChildren) at System.Windows.DescendentsWalker`1.IterateChildren(DependencyObject d) at System.Windows.DescendentsWalker`1._VisitNode(DependencyObject d) at System.Windows.DescendentsWalker`1.VisitNode(FrameworkElement fe) at System.Windows.DescendentsWalker`1.VisitNode(DependencyObject d) at System.Windows.DescendentsWalker`1.WalkFrameworkElementLogicalThenVisualChildren(FrameworkElement feParent, Boolean hasLogicalChildren) at System.Windows.DescendentsWalker`1.IterateChildren(DependencyObject d) at System.Windows.DescendentsWalker`1._VisitNode(DependencyObject d) at System.Windows.DescendentsWalker`1.VisitNode(FrameworkElement fe) at System.Windows.DescendentsWalker`1.VisitNode(DependencyObject d) at System.Windows.DescendentsWalker`1.WalkLogicalChildren(FrameworkElement feParent, FrameworkContentElement fceParent, IEnumerator logicalChildren) at System.Windows.DescendentsWalker`1.WalkFrameworkElementLogicalThenVisualChildren(FrameworkElement feParent, Boolean hasLogicalChildren) at System.Windows.DescendentsWalker`1.IterateChildren(DependencyObject d) at System.Windows.DescendentsWalker`1._VisitNode(DependencyObject d) at System.Windows.DescendentsWalker`1.VisitNode(FrameworkElement fe) at System.Windows.DescendentsWalker`1.VisitNode(DependencyObject d) at System.Windows.DescendentsWalker`1.WalkLogicalChildren(FrameworkElement feParent, FrameworkContentElement fceParent, IEnumerator logicalChildren) at System.Windows.DescendentsWalker`1.WalkFrameworkElementLogicalThenVisualChildren(FrameworkElement feParent, Boolean hasLogicalChildren) at System.Windows.DescendentsWalker`1.IterateChildren(DependencyObject d) at System.Windows.DescendentsWalker`1._VisitNode(DependencyObject d) at System.Windows.DescendentsWalker`1.VisitNode(FrameworkElement fe) at System.Windows.DescendentsWalker`1.VisitNode(DependencyObject d) at System.Windows.DescendentsWalker`1.WalkLogicalChildren(FrameworkElement feParent, FrameworkContentElement fceParent, IEnumerator logicalChildren) at System.Windows.DescendentsWalker`1.WalkFrameworkElementLogicalThenVisualChildren(FrameworkElement feParent, Boolean hasLogicalChildren) at System.Windows.DescendentsWalker`1.IterateChildren(DependencyObject d) at System.Windows.DescendentsWalker`1._VisitNode(DependencyObject d) at System.Windows.DescendentsWalker`1.VisitNode(FrameworkElement fe) at System.Windows.DescendentsWalker`1.VisitNode(DependencyObject d) at System.Windows.DescendentsWalker`1.WalkLogicalChildren(FrameworkElement feParent, FrameworkContentElement fceParent, IEnumerator logicalChildren) at System.Windows.DescendentsWalker`1.WalkFrameworkElementLogicalThenVisualChildren(FrameworkElement feParent, Boolean hasLogicalChildren) at System.Windows.DescendentsWalker`1.IterateChildren(DependencyObject d) at System.Windows.DescendentsWalker`1._VisitNode(DependencyObject d) at System.Windows.DescendentsWalker`1.VisitNode(FrameworkElement fe) at System.Windows.DescendentsWalker`1.VisitNode(DependencyObject d) at System.Windows.DescendentsWalker`1.WalkLogicalChildren(FrameworkElement feParent, FrameworkContentElement fceParent, IEnumerator logicalChildren) at System.Windows.DescendentsWalker`1.WalkFrameworkElementLogicalThenVisualChildren(FrameworkElement feParent, Boolean hasLogicalChildren) at System.Windows.DescendentsWalker`1.IterateChildren(DependencyObject d) at System.Windows.DescendentsWalker`1.StartWalk(DependencyObject startNode, Boolean skipStartNode) at System.Windows.TreeWalkHelper.InvalidateOnResourcesChange(FrameworkElement fe, FrameworkContentElement fce, ResourcesChangeInfo info) at System.Windows.Application.InvalidateResourceReferenceOnWindowCollection(WindowCollection wc, ResourcesChangeInfo info) at System.Windows.ResourceDictionary.NotifyOwners(ResourcesChangeInfo info) at System.Windows.ResourceDictionary.OnMergedDictionariesChanged(Object sender, NotifyCollectionChangedEventArgs e) at System.Collections.ObjectModel.ObservableCollection`1.OnCollectionChanged(NotifyCollectionChangedEventArgs e) at System.Collections.ObjectModel.ObservableCollection`1.InsertItem(Int32 index, T item) at System.Windows.ResourceDictionaryCollection.InsertItem(Int32 index, ResourceDictionary item) at System.Collections.ObjectModel.Collection`1.Add(T item)

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• How do I do nested transactions in NHibernate?

  - by Gavin Schultz-Ohkubo

  Can I do nested transactions in NHibernate, and how do I implement them? I'm using SQL Server 2008, so support is definitely in the DBMS. I find that if I try something like this: using (var outerTX = UnitOfWork.Current.BeginTransaction()) { using (var nestedTX = UnitOfWork.Current.BeginTransaction()) { ... do stuff nestedTX.Commit(); } outerTX.Commit(); } then by the time it comes to outerTX.Commit() the transaction has become inactive, and results in a ObjectDisposedException on the session AdoTransaction. Are we therefore supposed to create nested NHibernate sessions instead? Or is there some other class we should use to wrap around the transactions (I've heard of TransactionScope, but I'm not sure what that is)? I'm now using Ayende's UnitOfWork implementation (thanks Sneal). Forgive any naivety in this question, I'm still new to NHibernate. Thanks! EDIT: I've discovered that you can use TransactionScope, such as: using (var transactionScope = new TransactionScope()) { using (var tx = UnitOfWork.Current.BeginTransaction()) { ... do stuff tx.Commit(); } using (var tx = UnitOfWork.Current.BeginTransaction()) { ... do stuff tx.Commit(); } transactionScope.Commit(); } However I'm not all that excited about this, as it locks us in to using SQL Server, and also I've found that if the database is remote then you have to worry about having MSDTC enabled... one more component to go wrong. Nested transactions are so useful and easy to do in SQL that I kind of assumed NHibernate would have some way of emulating the same...

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• SceneManagers as systems in entity system or as a core class used by a system?

  - by Hatoru Hansou

  It seems entity systems are really popular here. Links posted by other users convinced me of the power of such system and I decided to try it. (Well, that and my original code getting messy) In my project, I originally had a SceneManager class that maintained needed logic and structures to organize the scene (QuadTree, 2D game). Before rendering I call selectRect() and pass the x,y of the camera and the width and height of the screen and then obtain a minimized list containing only visible entities ordered from back to front. Now with Systems, originally in my first attempt my Render system required to get added all entities it should handle. This may sound like the correct approach but I realized this was not efficient. Trying to optimize It I reused the SceneManager class internally in the Renderer system, but then I realized I needed methods such as selectRect() in others systems too (AI principally) and make the SceneManager accessible globally again. Currently I converted SceneManager to a system, and ended up with the following interface (only relevant methods): /// Base system interface class System { public: virtual void tick (double delta_time) = 0; // (methods to add and remove entities) }; typedef std::vector<Entity*> EntitiesVector; /// Specialized system interface to allow query the scene class SceneManager: public System { public: virtual EntitiesVector& cull () = 0; /// Sets the entity to be used as the camera and replaces previous ones. virtual void setCamera (Entity* entity) = 0; }; class SceneRenderer // Not a system { vitual void render (EntitiesVector& entities) = 0; }; Also I could not guess how to convert renderers to systems. My game separates logic updates from screen updates, my main class have a tick() method and a render() method that may not be called the same times. In my first attempt renderers were systems but they was saved in a separated manager, updated only in render() and not in tick() like all other systems. I realized that was silly and simply created a SceneRenderer interface and give up about converting them to systems, but that may be for another question. Then... something does not feel right, isn't it? If I understood correctly a system should not depend on another or even count with another system exposing an specific interface. Each system should care only about its entities, or nodes (as optimization, so they have direct references to relevant components without having to constantly call the component() or getComponent() method of the entity).

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• FormatException with IsolatedStorageSettings

  - by Jurgen Camilleri

  I have a problem when serializing a Dictionary<string,Person> to IsolatedStorageSettings. I'm doing the following: public Dictionary<string, Person> Names = new Dictionary<string, Person>(); if (!IsolatedStorageSettings.ApplicationSettings.Contains("Names")) { //Add to dictionary Names.Add("key", new Person(false, new System.Device.Location.GeoCoordinate(0, 0), new List<GeoCoordinate>() { new GeoCoordinate(35.8974, 14.5099), new GeoCoordinate(35.8974, 14.5099), new GeoCoordinate(35.8973, 14.5100), new GeoCoordinate(35.8973, 14.5099) })); //Serialize dictionary to IsolatedStorage IsolatedStorageSettings.ApplicationSettings.Add("Names", Names); IsolatedStorageSettings.ApplicationSettings.Save(); } Here is my Person class: [DataContract] public class Person { [DataMember] public bool Unlocked { get; set; } [DataMember] public GeoCoordinate Location { get; set; } [DataMember] public List<GeoCoordinate> Bounds { get; set; } public Person(bool unlocked, GeoCoordinate location, List<GeoCoordinate> bounds) { this.Unlocked = unlocked; this.Location = location; this.Bounds = bounds; } } The code works the first time, however on the second run I get a System.FormatException at the if condition. Any help would be highly appreciated thanks. P.S.: I tried an IsolatedStorageSettings.ApplicationSettings.Clear() but the call to Clear also gives a FormatException. I have found something new...the exception occurs twenty-five times, or at least that's how many times it shows up in the Output window. However after that, the data is deserialized perfectly. Should I be worried about the exceptions if they do not stop the execution of the program? EDIT: Here's the call stack when the exception occurs: mscorlib.dll!double.Parse(string s, System.Globalization.NumberStyles style, System.IFormatProvider provider) + 0x17 bytes System.Xml.dll!System.Xml.XmlConvert.ToDouble(string s) + 0x4b bytes System.Xml.dll!System.Xml.XmlReader.ReadContentAsDouble() + 0x1f bytes System.Runtime.Serialization.dll!System.Xml.XmlDictionaryReader.XmlWrappedReader.ReadContentAsDouble() + 0xb bytes System.Runtime.Serialization.dll!System.Xml.XmlDictionaryReader.ReadElementContentAsDouble() + 0x35 bytes System.Runtime.Serialization.dll!System.Runtime.Serialization.XmlReaderDelegator.ReadElementContentAsDouble() + 0x19 bytes mscorlib.dll!System.Reflection.RuntimeMethodInfo.InternalInvoke(System.Reflection.RuntimeMethodInfo rtmi, object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, object parameters, System.Globalization.CultureInfo culture, bool isBinderDefault, System.Reflection.Assembly caller, bool verifyAccess, ref System.Threading.StackCrawlMark stackMark) mscorlib.dll!System.Reflection.RuntimeMethodInfo.InternalInvoke(object obj, System.Reflection.BindingFlags invokeAttr, System.Reflection.Binder binder, object[] parameters, System.Globalization.CultureInfo culture, ref System.Threading.StackCrawlMark stackMark) + 0x168 bytes mscorlib.dll!System.Reflection.MethodBase.Invoke(object obj, object[] parameters) + 0xa bytes System.Runtime.Serialization.dll!System.Runtime.Serialization.XmlFormatReader.ReadValue(System.Type type, string name, string ns, System.Runtime.Serialization.XmlObjectSerializerReadContext context, System.Runtime.Serialization.XmlReaderDelegator xmlReader) + 0x138 bytes System.Runtime.Serialization.dll!System.Runtime.Serialization.XmlFormatReader.ReadMemberAtMemberIndex(System.Runtime.Serialization.ClassDataContract classContract, ref object objectLocal, System.Runtime.Serialization.DeserializedObject desObj) + 0xc4 bytes System.Runtime.Serialization.dll!System.Runtime.Serialization.XmlFormatReader.ReadClass(System.Runtime.Serialization.DeserializedObject desObj, System.Runtime.Serialization.ClassDataContract classContract, int membersRead) + 0xf3 bytes System.Runtime.Serialization.dll!System.Runtime.Serialization.XmlFormatReader.Deserialize(System.Runtime.Serialization.XmlObjectSerializerReadContext context) + 0x36 bytes System.Runtime.Serialization.dll!System.Runtime.Serialization.XmlFormatReader.InitializeCallStack(System.Runtime.Serialization.DataContract clContract, System.Runtime.Serialization.XmlReaderDelegator xmlReaderDelegator, System.Runtime.Serialization.XmlObjectSerializerReadContext xmlObjContext, System.Xml.XmlDictionaryString[] memberNamesColl, System.Xml.XmlDictionaryString[] memberNamespacesColl) + 0x77 bytes System.Runtime.Serialization.dll!System.Runtime.Serialization.CollectionDataContract.ReadXmlValue(System.Runtime.Serialization.XmlReaderDelegator xmlReader, System.Runtime.Serialization.XmlObjectSerializerReadContext context) + 0x5d bytes System.Runtime.Serialization.dll!System.Runtime.Serialization.XmlObjectSerializerReadContext.ReadDataContractValue(System.Runtime.Serialization.DataContract dataContract, System.Runtime.Serialization.XmlReaderDelegator reader) + 0x3 bytes System.Runtime.Serialization.dll!System.Runtime.Serialization.XmlObjectSerializerReadContext.InternalDeserialize(System.Runtime.Serialization.XmlReaderDelegator reader, string name, string ns, ref System.Runtime.Serialization.DataContract dataContract) + 0x10e bytes System.Runtime.Serialization.dll!System.Runtime.Serialization.XmlObjectSerializerReadContext.InternalDeserialize(System.Runtime.Serialization.XmlReaderDelegator xmlReader, System.Type declaredType, System.Runtime.Serialization.DataContract dataContract, string name, string ns) + 0xb bytes System.Runtime.Serialization.dll!System.Runtime.Serialization.DataContractSerializer.InternalReadObject(System.Runtime.Serialization.XmlReaderDelegator xmlReader, bool verifyObjectName) + 0x124 bytes System.Runtime.Serialization.dll!System.Runtime.Serialization.XmlObjectSerializer.ReadObjectHandleExceptions(System.Runtime.Serialization.XmlReaderDelegator reader, bool verifyObjectName) + 0xe bytes System.Runtime.Serialization.dll!System.Runtime.Serialization.XmlObjectSerializer.ReadObject(System.Xml.XmlDictionaryReader reader) + 0x7 bytes System.Runtime.Serialization.dll!System.Runtime.Serialization.XmlObjectSerializer.ReadObject(System.IO.Stream stream) + 0x17 bytes System.Windows.dll!System.IO.IsolatedStorage.IsolatedStorageSettings.Reload() + 0xa3 bytes System.Windows.dll!System.IO.IsolatedStorage.IsolatedStorageSettings.IsolatedStorageSettings(bool useSiteSettings) + 0x20 bytes System.Windows.dll!System.IO.IsolatedStorage.IsolatedStorageSettings.ApplicationSettings.get() + 0xd bytes

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• Of transactions and Mongo

  - by Nuri Halperin

  Originally posted on: http://geekswithblogs.net/nuri/archive/2014/05/20/of-transactions-and-mongo-again.aspxWhat's the first thing you hear about NoSQL databases? That they lose your data? That there's no transactions? No joins? No hope for "real" applications? Well, you *should* be wondering whether a certain of database is the right one for your job. But if you do so, you should be wondering that about "traditional" databases as well! In the spirit of exploration let's take a look at a common challenge: You are a bank. You have customers with accounts. Customer A wants to pay B. You want to allow that only if A can cover the amount being transferred. Let's looks at the problem without any context of any database engine in mind. What would you do? How would you ensure that the amount transfer is done "properly"? Would you prevent a "transaction" from taking place unless A can cover the amount? There are several options: Prevent any change to A's account while the transfer is taking place. That boils down to locking. Apply the change, and allow A's balance to go below zero. Charge person A some interest on the negative balance. Not friendly, but certainly a choice. Don't do either. Options 1 and 2 are difficult to attain in the NoSQL world. Mongo won't save you headaches here either. Option 3 looks a bit harsh. But here's where this can go: ledger. See, and account doesn't need to be represented by a single row in a table of all accounts with only the current balance on it. More often than not, accounting systems use ledgers. And entries in ledgers - as it turns out – don't actually get updated. Once a ledger entry is written, it is not removed or altered. A transaction is represented by an entry in the ledger stating and amount withdrawn from A's account and an entry in the ledger stating an addition of said amount to B's account. For sake of space-saving, that entry in the ledger can happen using one entry. Think {Timestamp, FromAccountId, ToAccountId, Amount}. The implication of the original question – "how do you enforce non-negative balance rule" then boils down to: Insert entry in ledger Run validation of recent entries Insert reverse entry to roll back transaction if validation failed. What is validation? Sum up the transactions that A's account has (all deposits and debits), and ensure the balance is positive. For sake of efficiency, one can roll up transactions and "close the book" on transactions with a pseudo entry stating balance as of midnight or something. This lets you avoid doing math on the fly on too many transactions. You simply run from the latest "approved balance" marker to date. But that's an optimization, and premature optimizations are the root of (some? most?) evil.. Back to some nagging questions though: "But mongo is only eventually consistent!" Well, yes, kind of. It's not actually true that Mongo has not transactions. It would be more descriptive to say that Mongo's transaction scope is a single document in a single collection. A write to a Mongo document happens completely or not at all. So although it is true that you can't update more than one documents "at the same time" under a "transaction" umbrella as an atomic update, it is NOT true that there' is no isolation. So a competition between two concurrent updates is completely coherent and the writes will be serialized. They will not scribble on the same document at the same time. In our case - in choosing a ledger approach - we're not even trying to "update" a document, we're simply adding a document to a collection. So there goes the "no transaction" issue. Now let's turn our attention to consistency. What you should know about mongo is that at any given moment, only on member of a replica set is writable. This means that the writable instance in a set of replicated instances always has "the truth". There could be a replication lag such that a reader going to one of the replicas still sees "old" state of a collection or document. But in our ledger case, things fall nicely into place: Run your validation against the writable instance. It is guaranteed to have a ledger either with (after) or without (before) the ledger entry got written. No funky states. Again, the ledger writing *adds* a document, so there's no inconsistent document state to be had either way. Next, we might worry about data loss. Here, mongo offers several write-concerns. Write-concern in Mongo is a mode that marshals how uptight you want the db engine to be about actually persisting a document write to disk before it reports to the application that it is "done". The most volatile, is to say you don't care. In that case, mongo would just accept your write command and say back "thanks" with no guarantee of persistence. If the server loses power at the wrong moment, it may have said "ok" but actually no written the data to disk. That's kind of bad. Don't do that with data you care about. It may be good for votes on a pole regarding how cute a furry animal is, but not so good for business. There are several other write-concerns varying from flushing the write to the disk of the writable instance, flushing to disk on several members of the replica set, a majority of the replica set or all of the members of a replica set. The former choice is the quickest, as no network coordination is required besides the main writable instance. The others impose extra network and time cost. Depending on your tolerance for latency and read-lag, you will face a choice of what works for you. It's really important to understand that no data loss occurs once a document is flushed to an instance. The record is on disk at that point. From that point on, backup strategies and disaster recovery are your worry, not loss of power to the writable machine. This scenario is not different from a relational database at that point. Where does this leave us? Oh, yes. Eventual consistency. By now, we ensured that the "source of truth" instance has the correct data, persisted and coherent. But because of lag, the app may have gone to the writable instance, performed the update and then gone to a replica and looked at the ledger there before the transaction replicated. Here are 2 options to deal with this. Similar to write concerns, mongo support read preferences. An app may choose to read only from the writable instance. This is not an awesome choice to make for every ready, because it just burdens the one instance, and doesn't make use of the other read-only servers. But this choice can be made on a query by query basis. So for the app that our person A is using, we can have person A issue the transfer command to B, and then if that same app is going to immediately as "are we there yet?" we'll query that same writable instance. But B and anyone else in the world can just chill and read from the read-only instance. They have no basis to expect that the ledger has just been written to. So as far as they know, the transaction hasn't happened until they see it appear later. We can further relax the demand by creating application UI that reacts to a write command with "thank you, we will post it shortly" instead of "thank you, we just did everything and here's the new balance". This is a very powerful thing. UI design for highly scalable systems can't insist that the all databases be locked just to paint an "all done" on screen. People understand. They were trained by many online businesses already that your placing of an order does not mean that your product is already outside your door waiting (yes, I know, large retailers are working on it... but were' not there yet). The second thing we can do, is add some artificial delay to a transaction's visibility on the ledger. The way that works is simply adding some logic such that the query against the ledger never nets a transaction for customers newer than say 15 minutes and who's validation flag is not set. This buys us time 2 ways: Replication can catch up to all instances by then, and validation rules can run and determine if this transaction should be "negated" with a compensating transaction. In case we do need to "roll back" the transaction, the backend system can place the timestamp of the compensating transaction at the exact same time or 1ms after the original one. Effectively, once A or B visits their ledger, both transactions would be visible and the overall balance "as of now" would reflect no change.  The 2 transactions (attempted/ reverted) would be visible , since we do actually account for the attempt. Hold on a second. There's a hole in the story: what if several transfers from A to some accounts are registered, and 2 independent validators attempt to compute the balance concurrently? Is there a chance that both would conclude non-sufficient-funds even though rolling back transaction 100 would free up enough for transaction 117 (some random later transaction)? Yes. there is that chance. But the integrity of the business rule is not compromised, since the prime rule is don't dispense money you don't have. To minimize or eliminate this scenario, we can also assign a single validation process per origin account. This may seem non-scalable, but it can easily be done as a "sharded" distribution. Say we have 11 validation threads (or processing nodes etc.). We divide the account number space such that each validator is exclusively responsible for a certain range of account numbers. Sounds cunningly similar to Mongo's sharding strategy, doesn't it? Each validator then works in isolation. More capacity needed? Chop the account space into more chunks. So where  are we now with the nagging questions? "No joins": Huh? What are those for? "No transactions": You mean no cross-collection and no cross-document transactions? Granted - but don't always need them either. "No hope for real applications": well... There are more issues and edge cases to slog through, I'm sure. But hopefully this gives you some ideas of how to solve common problems without distributed locking and relational databases. But then again, you can choose relational databases if they suit your problem.

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• SOA and distributed transactions

  - by Bermo

  When do distributed transactions make sense in a service-oriented architecture?

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• Cross-database transactions from one SP

  - by Michael Bray

  I need to update multiple databases with a few simple SQL statement. The databases are configurared in SQL using 'Linked Servers', and the SQL versions are mixed (SQL 2008, SQL 2005, and SQL 2000). I intend to write a stored procedure in one of the databases, but I would like to do so using a transaction to make sure that each database gets updated consistently. Which of the following is the most accurate: Will a single BEGIN/COMMIT TRANSACTION work to guarantee that all statements across all databases are successful? Will I need multiple BEGIN TRANSACTIONS for each individual set of commands on a database? Are transactions even supported when updating remote databases? I would need to execute a remote SP with embedded transaction support. Note that I don't care about any kind of cross-database referential integrity; I'm just trying to update multiple databases at the same time from a single stored procedure if possible. Any other suggestions are welcome as well. Thanks!

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• Mysql transactions issue

  - by Stann

  In straight mysql script I'd do transactions like this: START TRANSACTION; SELECT @A:=SUM(salary) FROM table1 WHERE type=1; UPDATE table2 SET summary=@A WHERE type=1; COMMIT; i'm a little confused about how transactions work in PDO. It looks like there are beginTransaction() and commit() methods - so I'm not sure are these just convenience wrappers around staright SQL? or are they doing some more job behind the doors? In other words - are these examples below essentially the same? example 1: $dbh->exec( 'START TRANSACTION' ); //...do some db work here... $dbh->exec( "COMMIT" ); example 2: $dbh->beginTransaction(); //...do some db work here... $dbh->commit();

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• Integrating Nagios with a ticketing system/incident mnagement system

  - by sektor

  Is there a free ticketing system/incident management system which will help me in achieving the following? 1) If a service goes down then Nagios alerts the on-duty staff and pushes the status to some backend or DB as a ticket, say the initial status is "New". 2) The on-duty staff logs in through a frontend and acknowledges the new ticket by marking it as "In progress", so now the status of the ticket changes from "New" to "In progress". 3) If even after "n" number of minutes no person from on-duty staff has changed the ticket status to "In progress" then Nagios alerts the next level of contacts. Although if the on-duty staff has acknowledged the ticket then there is no need to alert the next level. 4) When the service comes up Nagios closes the ticket by marking it "Closed" Now I already have Nagios monitoring set up and currently it alerts by sending text messages and mails, what I'm looking for is some framework which only escalates the issue(alerts the second level) if the first level(on-duty staff) fails to respond to the initial alert. By "responding to the alert" I mean, the on-duty staff can login via some frontend and basically change the status to something like "Acknowledged" or "In progress".

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• [Silverlight] Suggestion – Move INotifyCollectionChanged from System.Windows.dll to System.dll

  - by Benjamin Roux

  I just submitted a suggestion on Microsoft Connect to move the INotifyCollectionChanged from System.Windows.dll to System.dll. You can review it here: https://connect.microsoft.com/VisualStudio/feedback/details/560184/move-inotifycollectionchanged-from-system-windows-dll-to-system-dll Here’s the reason why I suggest that. Actually I wanted to take advantages of the new feature of Silverlight/Visual Studio 2010 for sharing assemblies (see http://blogs.msdn.com/clrteam/archive/2009/12/01/sharing-silverlight-assemblies-with-net-apps.aspx). Everything went fine until I try to share a custom collection (with custom business logic) implementing INotifyCollectionChanged. This modification has been made in the .NET Framework 4 (see https://connect.microsoft.com/VisualStudio/feedback/details/488607/move-inotifycollectionchanged-to-system-dll) so maybe it could be done in Silverlight too. If you think this is justifiable you can vote for it.

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