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  • Which cross threading invoke function is better for a control that is inherited?

    - by Stevoni
    I have a relatively simple question regarding the best way to call the DataGridView.Rows.Add function when it is inherited into the current control. Which is the best way to make the call to the inherited control? Call it directly in the invoke or call it using recursive-like function? They both seem to produce the same result, a row gets added and the quantity is returned, but which is the most efficient? The delegate: Private Delegate Function ReturnDelegate() As Object The two ways are: A) Private Overloads Function AddRow() As Integer If InvokeRequired Then Return CInt(Invoke(New ReturnDelegate(AddressOf AddRow))) Else Return Rows.Add() End If End Function Or B) Private Function RowsAdd() As Integer If Me.InvokeRequired Then Return CInt(Me.Invoke(New ReturnDelegate(AddressOf MyBase.Rows.Add))) Else Return MyBase.Rows.Add End If End Function

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  • ASP.Net Error - Unable to cast object of type 'System.String' to type 'System.Data.DataTable'.

    - by xtrabits
    I get the below error Unable to cast object of type 'System.String' to type 'System.Data.DataTable'. This is the code I'm using Dim str As String = String.Empty If (Session("Brief") IsNot Nothing) Then Dim dt As DataTable = Session("Brief") If (dt.Rows.Count > 0) Then For Each dr As DataRow In dt.Rows If (str.Length > 0) Then str += "," str += dr("talentID").ToString() Next End If End If Return str Thanks

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  • Guessess of my session value conflicts

    - by SmartestVEGA
    I have a asp.net web form which will submit information to come as emails. Whenever user fill the form and click on submit button,the information user entered will be sent as email. This web form has 4 page. but the web form will not use all 4 page on all requests. if the user select a particular value in first page, the form will bypass the 3rd page and go the last 4th page(like...page1,2,4). IF it is any other values selected in the first page. form will navigate as page1,2,3,4. So now my problem is when multiple users access the same website, the value in the first page get combines from different users and the form will act abnormally.Sometime it will bypass sometimes it will not bypass the page3 Show below is the variable decalrations: Public strRoleType As String = String.Empty Protected Shared isAreaSelected As Integer = 0 Protected Shared isStoreSelected As Integer = 0 Protected Shared isHeadOfficeSelected As Integer = 0 Protected Shared isRegionSelected As Integer = 0 I guess the problem is with strRoleType variable whether it is getting values from different users. Do any have any work around?

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  • How do I resolve the config error which states a machine to application error

    - by waterfalrain
    I imported a website made in visual studio express 2008 to visual studio express 2010. When I run the home page I get the following error: "It is an error to use a section registered as allowDefinition='MachineToApplication' beyond application level. This error can be caused by a virtual directory not being configured as an application in IIS." When I looked up the meaning of this on Google I read their needed to be a change to the configuration of the virtual directory. Another suggestion was to change the web config files . T Were these suggestions correct? If so how do I emplement them so that I can view these website pages on my local machine.

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  • How to run a WebForms page and an MVC page in different files?

    - by Erx_VB.NExT.Coder
    when i try to do this and load the webforms page, i get this error, even tho the path is correct. what can i do to get past this? i've tried running the aspx page from the root as well. nada. Server Error in '/' Application. The resource cannot be found. Description: HTTP 404. The resource you are looking for (or one of its dependencies) could have been removed, had its name changed, or is temporarily unavailable. Please review the following URL and make sure that it is spelled correctly. Requested URL: /Views/Home/FileUploadFrame.aspx Version Information: Microsoft .NET Framework Version:4.0.30128; ASP.NET Version:4.0.30128.1

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  • How to implement the Facebook "Like" button for my website

    - by vamsivanka
    I am trying to implement facebook like button on my website. The first four lines in the code is already there on my site after the end of the "" tag. To implement the "Like button" i have added the second script (Line five to the end) and ran the application. Its giving me an error as "Microsoft Jscript runtime error:'_onLoad' is null or not an object" Please Let me know. Thanks <script type="text/javascript" src="http://static.ak.connect.facebook.com/js/api_lib/v0.4/FeatureLoader.js.php"></script> <script type="text/javascript"> FB.init("myapikey", "xd_receiver.htm", { "reloadIfSessionStateChanged": true }); </script> <script type="text/javascript"> window.fbAsyncInit = function() { FB.init({appId: 'myappid', status: true, cookie: true, xfbml: true}); }; (function() { var e = document.createElement('script'); e.async = true; e.src = document.location.protocol + '//connect.facebook.net/en_US/all.js'; document.getElementById('fb-root').appendChild(e); }()); </script> References: http://developers.facebook.com/docs/reference/plugins/like <fb:like href="http://webclip.in" layout="standard" show-faces="true" width="450" action="like" font="arial" colorscheme="light"/>

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  • .NET remoting manual configuration

    - by Quandary
    Question: In .NET remoting, I configure the client like this from a config file RemotingConfiguration.Configure("AsyncRemoteAPIclient.exe.config", False) Dim obj As New RemoteAPI.ServiceClass() (with this AsyncRemoteAPIclient.exe.config) <system.runtime.remoting> <application> <client> <wellknown type="RemoteAPI.ServiceClass, ServiceClass" url="http://localhost:8080/ServiceClass.rem" /> </client> <channels> <channel ref="http" port="0" /> </channels> </application> But when I replace the config file with manual configuration with the below code, it stops working, and starts complaining "ServiceClass or dependency not found". Dim chan As New System.Runtime.Remoting.Channels.Http.HttpChannel(0) System.Runtime.Remoting.Channels.ChannelServices.RegisterChannel(chan, False) ' Create an instance of the remote object Dim obj As RemoteAPI.ServiceClass obj = CType(Activator.GetObject(GetType(RemoteAPI.ServiceClass), "http://localhost:8080/ServiceClass.rem"), RemoteAPI.ServiceClass) What's wrong ?

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  • How to use derived class shared variables in shared methods of base class

    - by KoolKabin
    Hi guys, I am trying to add shared members in derived classes and use that values in base classes... I have base class DBLayer public shared function GetDetail(byval UIN as integer) dim StrSql = string.format("select * from {0} where uin = {1}", tablename, uin) .... end function end class my derived class class User inherits dblayer public shared tabledname as string = "users" end class class item inherits dblayer public shared tabledname as string = "item" end class class category inherits dblayer public shared tabledname as string = "category" end class currently there is error using the tablename variable of derived class in base class but i want to use it... coz i dun know other techniques... if other solutions are better then u can post it or u can say how can i make it work? confused...

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  • What is wrong with this Anonymous Object Initializate Syntax?

    - by Ramiz Uddin
    What is wrong with this Anonymous Object Initialize syntax? If (Not row Is Nothing) Then Dim info As New CultureInfo(Conversions.ToString(row.Item("cultureId"))) With { _ .NumberFormat = New With {.CurrencySymbol = Conversions.ToString(row.Item("symbol")), .CurrencyGroupSeparator = Conversions.ToString(row.Item("thousSep")), .CurrencyDecimalSeparator = Conversions.ToString(row.Item("thousSep")), .CurrencyDecimalDigits = Conversions.ToInteger(row.Item("decimals")), .NumberGroupSeparator = Conversions.ToString(row.Item("thousSep")), .NumberDecimalSeparator = Conversions.ToString(row.Item("thousSep")), .NumberDecimalDigits = Conversions.ToInteger(row.Item("decimals"))}} } hashtable.Add(key, info) End If It is a syntax error or object initialization type casting issue. Thanks.

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  • How to determine the path of the current web site

    - by Velika2
    I wanted to create a function which would return the path of the current web site. This is what I thought was working while running in the IDE: Public Shared Function WebsiteAbsoluteBaseUrl() As String Dim RequestObject As System.Web.HttpRequest = HttpContext.Current.Request Return "http://" & RequestObject.Url.Host & ":" & _ RequestObject.Url.Port & "/" & _ RequestObject.Url.Segments(1) End Function Does this seem like it should work? Is there a more straight forward way?

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  • Where is my mistake?

    - by Hakan
    I have table which is connected to datagridview and I would like to enter new data by using text boxes. I have following code but it gives me error. Will be appreciated if you help me. Dim meter As DataTable = Me.DataSet1.Tables.Item("tblmeters") Dim row As DataRow = meter.NewRow() row.Item("No") = Me.txtno.Text row.Item("Turnover") = Me.txtturnover.Text row.Item("Total Win") = Me.txttotalwin.Text row.Item("Games Played") = Me.txtgamesplayed.Text row.Item("Credit In") = Me.txtcreditin.Text row.Item("Bill In") = Me.txtbillin.Text row.Item("Hand Pay") = Me.txthandpay.Text row.Item("Date") = DateTime.Today.ToShortDateString meter.Rows.Add(row) Me.TblMeterTableAdapter.Update(Me.DataSet1.tblMeter) meter.AcceptChanges()

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  • Merge Word Documents (Office Interop & .NET), Keeping Formatting

    - by mbmccormick
    I'm having some difficulty merging multiple word documents together using Microsoft Office Interop Assemblies (Office 2007) and ASP.NET 3.5. I'm able to merge the documents, but some of my formatting is missing (namely the fonts and images). My current merge code is shown below. private void CombineDocuments() { object wdPageBreak = 7; object wdStory = 6; object oMissing = System.Reflection.Missing.Value; object oFalse = false; object oTrue = true; string fileDirectory = @"C:\documents\"; Microsoft.Office.Interop.Word.Application WordApp = new Microsoft.Office.Interop.Word.Application(); Microsoft.Office.Interop.Word.Document wDoc = WordApp.Documents.Add(ref oMissing, ref oMissing, ref oMissing, ref oMissing); string[] wordFiles = Directory.GetFiles(fileDirectory, "*.doc"); for (int i = 0; i < wordFiles.Length; i++) { string file = wordFiles[i]; wDoc.Application.Selection.Range.InsertFile(file, ref oMissing, ref oMissing, ref oMissing, ref oFalse); wDoc.Application.Selection.Range.InsertBreak(ref wdPageBreak); wDoc.Application.Selection.EndKey(ref wdStory, ref oMissing); } string combineDocName = Path.Combine(fileDirectory, "Merged Document.doc"); if (File.Exists(combineDocName)) File.Delete(combineDocName); object combineDocNameObj = combineDocName; wDoc.SaveAs(ref combineDocNameObj, ref m_WordDocumentType, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing); } I don't care necessarily how this is accomplished. It could output via PDF if it had to. I just want the formatting to carry over. Any help or hints that you could provide me with would be appreciated! Thanks!

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  • Yet another date formatting problem :(

    - by Jonesy
    Hi folks, I seem to have a date formatting problem every day! I am querying a table and am getting a date back in the format dd/mm/yyyy (as a string btw). Brilliant! thats what I want. But, now I want to convert that string to a date so i can do dim dayNumber as integer = day.DayOfWeek But when I convert it to a date it changes it to #m/dd/yyyy#. AHHHH! how can I change this? Cheers

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  • Tooltip in .Net

    - by Ben
    Hi, I have a DataGridView in a Winforms application containing a collection of items. Each item has an image and various other details. I know it is possible in WPF, but can you get a tooltip to display an image and a more structured set of details then just plain text? Thanks.

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  • label backgrond flicking on a WinForms user control has background image enabled

    - by slowlycooked
    I am working on a windows form project and having some problem with UserControl Double Buffering. I created a usercontrol and has a background image, then on top of it I have few radio buttons and labels. Radio buttons and labels are all having transparent background as color. However, when I show and hide the User control, I can see the flickering on those labels and radio buttons that has transparent background. And I tried Me.SetStyle(ControlStyles.DoubleBuffer _ Or ControlStyles.AllPaintingInWmPaint _ Or ControlStyles.UserPaint _ Or ControlStyles.SupportsTransparentBackColor, _ True) After initializeComponent() to enable double buffer on this user control, but it doesn’t seem to work.

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  • ado.net managing connections

    - by madlan
    Hi, I'm populating a listview with a list of databases on a selected SQL instance, then retrieving a value from each database (It's internal product version, column doesn't always exist) I'm calling the below function to populate the second column of the listview: item.SubItems.Add(DBVersionCheck(serverName, database.Name)) Function DBVersionCheck(ByVal SelectedInstance As String, ByVal SelectedDatabase As String) Dim m_Connection As New SqlConnection("Server=" + SelectedInstance + ";User Id=sa;Password=password;Database=" + SelectedDatabase) Dim db_command As New SqlCommand("select Setting from SystemSettings where [Setting] = 'version'", m_Connection) Try m_Connection.Open() Return db_command.ExecuteScalar().trim m_Connection.Dispose() Catch ex As Exception 'MessageBox.Show(ex.Message) Return "NA" Finally m_Connection.Dispose() End Try End Function This works fine except it's creating a connection to each database and leaving it open. My understanding is the close()\dispose() releases only the connection from the pool in ado rather than the actual connection to sql. How would I close the actual connections after I've retrieved the value? Leaving these open will create hundreds of connections to databases that will probably not be used for that session.

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  • Windows Forms: Unable to Click to Focus a MaskedTextBox in a Non TopLevel Form

    - by Overhed
    Like the title says, I've got a Child form being shown with it's TopLevel property set to False and I am unable to click a MaskedTextBox control that it contains (in order to bring focus to it). I can bring focus to it by using TAB on the keyboard though. The child form contains other regular TextBox controls and these I can click to focus with no problems, although they also exhibit some odd behavior: for example if I've got a value in the Textbox and I try to drag-click from the end of the string to the beginning, nothing happens. In fact I can't use my mouse to move the cursor inside the TextBox's text at all (although they keyboard arrow keys work). I'm not too worried about the odd TextBox behavior, but why can't I activate my MaskedTextBox by clicking on it? Below is the code that shows the form: Dim newReportForm As New Form Dim formName As String Dim FullTypeName As String Dim FormInstanceType As Type formName = TreeView1.SelectedNode.Name FullTypeName = Application.ProductName & "." & formName FormInstanceType = Type.GetType(FullTypeName, True, True) newReportForm = CType(Activator.CreateInstance(FormInstanceType), Form) Try newReportForm.Top = CType(SplitContainer1.Panel2.Controls(0), Form).Top + 25 newReportForm.Left = CType(SplitContainer1.Panel2.Controls(0), Form).Left + 25 Catch End Try newReportForm.TopLevel = False newReportForm.Parent = SplitContainer1.Panel2 newReportForm.BringToFront() newReportForm.Show()

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  • How to get MinValue/MaxValue of a certain ValueType via reflection?

    - by marco.ragogna
    I need to this at runtime. I checked using Reflector and value types line like Int16, for example, should contain <Serializable, StructLayout(LayoutKind.Sequential), ComVisible(True)> _ Public Structure Int16 Implements IComparable, IFormattable, IConvertible, IComparable(Of Short), IEquatable(Of Short) Public Const MaxValue As Short = &H7FFF Public Const MinValue As Short = -32768 End Structure But the following code is not working Dim dummyValue = Activator.CreateInstance(GetType(UInt16)) Dim minValue As IComparable = DirectCast(dummyValue.GetType.GetProperty("MinValue").GetValue(dummyValue, Nothing), IComparable) any idea how to solve?

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  • Count checked CheckedListBox items

    - by comii
    Hi! I have CheckedListBox and four item in it! Now I want to count number of checked item. For this I use: countnumber=CheckedListBox1.CheckedItems.Count But countnumber is always 0 even if I checked CheckedListBox items or not! What I am doing wrong?

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  • Web form is not updating tables, why?

    - by JPJedi
    I have a web application and on page is an update page to update some profile information. Below is the code I am using to update the table. But I think it is wrong. Does anything stick out? The connection string works cause it is used to read the database to get the profile information, I just removed it due to it containing password/login info for the db. player is the class of properties that contains player information and ds is the dataset, but I would like to update the database itself online... Dim connectionString As String = "" Dim GigsterDBConnection As New System.Data.SqlClient.SqlConnection(connectionString) GigsterDBConnection.Open() Dim updatetoursql As String = "UPDATE PLAYERS SET FIRSTNAME = '" & player.FIRSTNAME & "', LASTNAME = '" & player.LASTNAME & "', ADDRESS = '" & player.ADDRESS & "', CITY = '" & player.CITY & "', ZIP = '" & player.ZIP & "', PHONE = '" & player.PHONE & "', EMAIL = '" & player.EMAIL & "', REFFEREDBY = '" & player.REFEREDBY & "' " updatetoursql = updatetoursql & "PLAYERID = '" & player.PLAYERID & "';" Dim cmd As New System.Data.SqlClient.SqlCommand(updatetoursql, GigsterDBConnection) Dim sqlAdapter As New System.Data.SqlClient.SqlDataAdapter(cmd) sqlAdapter.Update(ds, "PLAYERS") I think the issue is something the 3 last lines of the code. am I doing it right or is their a better way? Thanks

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  • Read assembly Guid without locking the DLL in an appdomain in medium trust ASP.Net

    - by ggonsalv
    Is it possible to read the GUID from the Assembly without actually loading it in the current App Domain. Normally Assembly.Load loads the DLL into the app domain. I just want to read the value. The description of the GUID is 'The following GUID is for the ID of the typelib ' if this project is exposed to COM <Assembly: Guid("DEDDE61CD-928E-4ACD-8C25-3B8577284819")> The main thing is I don't want to lock the file so that there are no errors 'Another process is accessing the file' error.

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  • If Then Statement Condition Being Ignored With Optimisations On

    - by Matma
    I think im going mad but can some show me what im missing, it must be some stupidly simple i just cant see the wood for the trees. BOTH side of this if then else statement are being executed? Ive tried commenting out the true side and moving the condition to a seperate variable with the same result. However if i explicitly set the condition to 1=0 or 1=1 then the if then statement is operating as i would expect. i.e. only executing one side of the equation... The only time ive seen this sort of thing is when the compiler has crashed and is no longer compiling (without visible indication that its not) but ive restarted studio with the same results, ive cleaned the solution, built and rebuilt with no change? please show me the stupid mistake im making using vs2005 if it matters. Dim dset As DataSet = New DataSet If (CboCustomers.SelectedValue IsNot Nothing) AndAlso (CboCustomers.SelectedValue <> "") Then Dim Sql As String = "Select sal.SalesOrderNo As SalesOrder,cus.CustomerName,has.SerialNo, convert(varchar,sal.Dateofpurchase,103) as Date from [dbo].[Customer_Table] as cus " & _ " inner join [dbo].[Hasp_table] as has on has.CustomerID=cus.CustomerTag " & _ " inner join [dbo].[salesorder_table] as sal On sal.Hasp_ID =has.Hasp_ID Where cus.CustomerTag = '" & CboCustomers.SelectedValue.ToString & "'" Dim dap As SqlDataAdapter = New SqlDataAdapter(Sql, FormConnection) dap.Fill(dset, "dbo.Customer_Table") DGCustomer.DataSource = dset.Tables("dbo.Customer_Table") Else Dim erm As String = "wtf" End If EDIT: i have found that this is something to do with the release config settings im using, i guesing its the optimisations bit. does anyone know of any utils/addons for vs that show if a line has been optimised out. delphi, my former language showed blue dots in the left margin to show that it was a compiled line, no dot meaning it wasnt compiled in, is there anything like that for vs? alternatively can someone explain how optimisations would affect this simple if statement causeing it to run both sides? EDIT2: using this thread as possible causes/solutions : http://stackoverflow.com/questions/2135509/bug-only-occurring-when-compile-optimization-enabled. It does the same with release = optimisations on, x86, x64 and AnyCPU Goes away with optimisations off. Im using V2005 on a x64 win7 machine, if that matters. Thanks

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