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  • Ninject 3.0 MVC kernel.bind error Auto Registration

    - by user295734
    Getting and error on kernel.Bind(scanner = ... "scanner" has the little error line under it in VS 2010. Cannot convert lambda expression to type 'System.Type[]' because it is not a delegate type Tyring to Auto Register like the old kernel.scan in 2.0. I can not figure out what i am doing wrong. Added and removed so many Ninject packages. completely lost, getting to be a big waste of time. using System; using System.Web; using Microsoft.Web.Infrastructure.DynamicModuleHelper; using Ninject; using Ninject.Web.Common; //using Ninject.Extensions.Conventions; using Ninject.Web.WebApi; using Ninject.Web.Mvc; using CommonServiceLocator.NinjectAdapter; using System.Reflection; using System.IO; using LR.Repository; using LR.Repository.Interfaces; using LR.Service.Interfaces; using System.Web.Http; public static class NinjectWebCommon { private static readonly Bootstrapper bootstrapper = new Bootstrapper(); /// <summary> /// Starts the application /// </summary> public static void Start() { DynamicModuleUtility.RegisterModule(typeof(OnePerRequestHttpModule)); DynamicModuleUtility.RegisterModule(typeof(NinjectHttpModule)); bootstrapper.Initialize(CreateKernel); } /// <summary> /// Stops the application. /// </summary> public static void Stop() { bootstrapper.ShutDown(); } /// <summary> /// Creates the kernel that will manage your application. /// </summary> /// <returns>The created kernel.</returns> private static IKernel CreateKernel() { var kernel = new StandardKernel(); kernel.Bind<Func<IKernel>>().ToMethod(ctx => () => new Bootstrapper().Kernel); kernel.Bind<IHttpModule>().To<HttpApplicationInitializationHttpModule>(); RegisterServices(kernel); return kernel; } /// <summary> /// Load your modules or register your services here! /// </summary> /// <param name="kernel">The kernel.</param> private static void RegisterServices(IKernel kernel) { kernel.Bind(scanner => scanner.FromAssembliesInPath(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location)) .Select(IsServiceType) .BindToDefaultInterface() .Configure(binding => binding.InSingletonScope()) ); } private static bool IsServiceType(Type type) { // temp return true; // .Any() is not recognized either. return true; // type.IsClass && type.GetInterfaces().Any(intface => intface.Name == "I" + type.Name); }

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  • Best practices for using the Entity Framework with WPF DataBinding

    - by Ken Smith
    I'm in the process of building my first real WPF application (i.e., the first intended to be used by someone besides me), and I'm still wrapping my head around the best way to do things in WPF. It's a fairly simple data access application using the still-fairly-new Entity Framework, but I haven't been able to find a lot of guidance online for the best way to use these two technologies (WPF and EF) together. So I thought I'd toss out how I'm approaching it, and see if anyone has any better suggestions. I'm using the Entity Framework with SQL Server 2008. The EF strikes me as both much more complicated than it needs to be, and not yet mature, but Linq-to-SQL is apparently dead, so I might as well use the technology that MS seems to be focusing on. This is a simple application, so I haven't (yet) seen fit to build a separate data layer around it. When I want to get at data, I use fairly simple Linq-to-Entity queries, usually straight from my code-behind, e.g.: var families = from family in entities.Family.Include("Person") orderby family.PrimaryLastName, family.Tag select family; Linq-to-Entity queries return an IOrderedQueryable result, which doesn't automatically reflect changes in the underlying data, e.g., if I add a new record via code to the entity data model, the existence of this new record is not automatically reflected in the various controls referencing the Linq query. Consequently, I'm throwing the results of these queries into an ObservableCollection, to capture underlying data changes: familyOC = new ObservableCollection<Family>(families.ToList()); I then map the ObservableCollection to a CollectionViewSource, so that I can get filtering, sorting, etc., without having to return to the database. familyCVS.Source = familyOC; familyCVS.View.Filter = new Predicate<object>(ApplyFamilyFilter); familyCVS.View.SortDescriptions.Add(new System.ComponentModel.SortDescription("PrimaryLastName", System.ComponentModel.ListSortDirection.Ascending)); familyCVS.View.SortDescriptions.Add(new System.ComponentModel.SortDescription("Tag", System.ComponentModel.ListSortDirection.Ascending)); I then bind the various controls and what-not to that CollectionViewSource: <ListBox DockPanel.Dock="Bottom" Margin="5,5,5,5" Name="familyList" ItemsSource="{Binding Source={StaticResource familyCVS}, Path=., Mode=TwoWay}" IsSynchronizedWithCurrentItem="True" ItemTemplate="{StaticResource familyTemplate}" SelectionChanged="familyList_SelectionChanged" /> When I need to add or delete records/objects, I manually do so from both the entity data model, and the ObservableCollection: private void DeletePerson(Person person) { entities.DeleteObject(person); entities.SaveChanges(); personOC.Remove(person); } I'm generally using StackPanel and DockPanel controls to position elements. Sometimes I'll use a Grid, but it seems hard to maintain: if you want to add a new row to the top of your grid, you have to touch every control directly hosted by the grid to tell it to use a new line. Uggh. (Microsoft has never really seemed to get the DRY concept.) I almost never use the VS WPF designer to add, modify or position controls. The WPF designer that comes with VS is sort of vaguely helpful to see what your form is going to look like, but even then, well, not really, especially if you're using data templates that aren't binding to data that's available at design time. If I need to edit my XAML, I take it like a man and do it manually. Most of my real code is in C# rather than XAML. As I've mentioned elsewhere, entirely aside from the fact that I'm not yet used to "thinking" in it, XAML strikes me as a clunky, ugly language, that also happens to come with poor designer and intellisense support, and that can't be debugged. Uggh. Consequently, whenever I can see clearly how to do something in C# code-behind that I can't easily see how to do in XAML, I do it in C#, with no apologies. There's been plenty written about how it's a good practice to almost never use code-behind in WPF page (say, for event-handling), but so far at least, that makes no sense to me whatsoever. Why should I do something in an ugly, clunky language with god-awful syntax, an astonishingly bad editor, and virtually no type safety, when I can use a nice, clean language like C# that has a world-class editor, near-perfect intellisense, and unparalleled type safety? So that's where I'm at. Any suggestions? Am I missing any big parts of this? Anything that I should really think about doing differently?

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  • ASP.NET Wizard control with Dynamic UserControls

    - by wjat777
    Hello everyone I'm trying to use the Wizard control as follows: 1 - In the first step (first screen) has a cheklistbox with several options 2 - For each option selected, will be created an extra step 3 - In some steps may be set up intermediate stages Me problem is that each step is a usercontrol. So if the first step I select option1 and option3, I should create two more steps with usercontrol1 and UserControl3 .... Someone already did something similar? I will try explain better the problem. I'll paste here, but I put a copy of the project in skydrive: http://cid-3d949f1661d00819.skydrive.live.com/self.aspx/C%5E3/WizardControl2.7z It is a very basic example of what I'm trying to do. The project has page.ASPX 1 and 3 usercontrol.ASCX (UC1, UC2 and UC3) Default.ASPX: <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="WebApplication2._Default" % Option1 Option2 Option3 Code Behind: using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; namespace WebApplication2 { public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { } protected void Page_PreInit(object sender, EventArgs e) { LoadSteps(); } private void LoadSteps() { int count = Wizard1.WizardSteps.Count; for (int i = count - 1; i > 0; i--) { WizardStepBase step = Wizard1.WizardSteps[i]; if (step.StepType != WizardStepType.Start) Wizard1.WizardSteps.Remove(step); } string Activities=""; foreach (ListItem item in CheckBoxList1.Items) { if (item.Selected) { WizardStep step = new WizardStep {ID = "step_" + item.Value, Title = "step_" + item.Value}; UserControl uc=null; switch (item.Value) { case "1": uc=(UserControl)LoadControl("~/UC1.ascx"); break; case "2": uc=(UserControl)LoadControl("~/UC2.ascx"); break; case "3": uc=(UserControl)LoadControl("~/UC3.ascx"); break; } step.Controls.Add(uc); Wizard1.WizardSteps.Add(step); } } } protected void CheckBoxList1_SelectedIndexChanged(object sender, EventArgs e) { LoadSteps(); } } } Control UC1.ASCX to UC3.ASCX has the same code (as an example) usercontrol.ascx: <%@ Control Language="C#" AutoEventWireup="true" CodeBehind="UC1.ascx.cs" Inherits="WebApplication2.UC1" % AutoPostBack="True" AutoPostBack="True" Code Behind: using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; namespace WebApplication2 { public partial class UC1 : System.Web.UI.UserControl { protected void Page_Init(object sender, EventArgs e) { List list1 = new List { "Alice", "Bob", "Chris" }; List list2 = new List { "UN", "DEUX", "TROIS" }; DropDownList1.DataSource = list1; DropDownList2.DataSource = list2; DropDownList1.DataBind(); DropDownList2.DataBind(); } protected void Page_Load(object sender, EventArgs e) { if (IsPostBack) return; } protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e) { Label1.Text = DropDownList1.SelectedValue; } protected void DropDownList2_SelectedIndexChanged(object sender, EventArgs e) { Label2.Text = DropDownList2.SelectedValue; } } } You can see that the controls UserControls trigger events (they cause postbacks) The behavior of this project is a little different than I described in the first thread, but the problem is the same. After the second time "next" button, you will get an error. Thanks in advance William

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  • NHibernate which cache to use for WinForms application

    - by chiccodoro
    I have a C# WinForms application with a database backend (oracle) and use NHibernate for O/R mapping. I would like to reduce communication to the database as much as possible since the network in here is quite slow, so I read about second level caching. I found this quite good introduction, which lists the following available cache implementations. I'm wondering which implementation I should use for my application. The caching should be simple, it should not significantly slow down the first occurrence of a query, and it should not take much memory to load the implementing assemblies. (With NHibernate and Castle, the application already takes up to 80 MB of RAM!) Velocity: uses Microsoft Velocity which is a highly scalable in-memory application cache for all kinds of data. Prevalence: uses Bamboo.Prevalence as the cache provider. Bamboo.Prevalence is a .NET implementation of the object prevalence concept brought to life by Klaus Wuestefeld in Prevayler. Bamboo.Prevalence provides transparent object persistence to deterministic systems targeting the CLR. It offers persistent caching for smart client applications. SysCache: Uses System.Web.Caching.Cache as the cache provider. This means that you can rely on ASP.NET caching feature to understand how it works. SysCache2: Similar to NHibernate.Caches.SysCache, uses ASP.NET cache. This provider also supports SQL dependency-based expiration, meaning that it is possible to configure certain cache regions to automatically expire when the relevant data in the database changes. MemCache: uses memcached; memcached is a high-performance, distributed memory object caching system, generic in nature, but intended for use in speeding up dynamic web applications by alleviating database load. Basically a distributed hash table. SharedCache: high-performance, distributed and replicated memory object caching system. See here and here for more info My considerations so far were: Velocity seems quite heavyweight and overkill (the files totally take 467 KB of disk space, haven't measured the RAM it takes so far because I didn't manage to make it run, see below) Prevalence, at least in my first attempt, slowed down my query from ~0.5 secs to ~5 secs, and caching didn't work (see below) SysCache seems to be for ASP.NET, not for winforms. MemCache and SharedCache seem to be for distributed scenarios. Which one would you suggest me to use? There would also be a built-in implementation, which of course is very lightweight, but the referenced article tells me that I "(...) should never use this cache provider for production code but only for testing." Besides the question which fits best into my situation I also faced problems with applying them: Velocity complained that "dcacheClient" tag not specified in the application configuration file. Specify valid tag in configuration file," although I created an app.config file for the assembly and pasted the example from this article. Prevalence, as mentioned above, heavily slowed down my first query, and the next time the exact same query was executed, another select was sent to the database. Maybe I should "externalize" this topic into another post. I will do that if someone tells me it is absolutely unusual that a query is slowed down so much and he needs further details to help me.

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  • The model item passed into the dictionary is of type 'System.Collections.Generic.Lis

    - by mazhar
    Calling Index view is giving me this very very annoying error . Can anybody tell me what to do about it Error: The model item passed into the dictionary is of type 'System.Collections.Generic.List1[MvcApplication13.Models.Groups]', but this dictionary requires a model item of type 'MvcApplication13.Helpers.PaginatedList1[MvcApplication13.Models.Groups]'. public ActionResult Index(int? page) { const int pageSize = 10; var group =from p in _db.Groups orderby p.int_GroupId select p; var paginatedGroup = group.Skip((page ?? 0) * pageSize).Take(pageSize).ToList(); return View(paginatedGroup); } View: <%@ Page Title="" Language="C#" MasterPageFile="~/Views/Shared/Site.Master" Inherits="System.Web.Mvc.ViewPage" % Index <h2>Index</h2> <table> <tr> <th></th> <th> int_GroupId </th> <th> vcr_GroupName </th> <th> txt_GroupDescription </th> <th> bit_Is_Deletable </th> <th> bit_Active </th> <th> int_CreatedBy </th> <th> dtm_CreatedDate </th> <th> int_ModifiedBy </th> <th> dtm_ModifiedDate </th> </tr> <% foreach (var item in Model) { %> <tr> <td> <%= Html.ActionLink("Edit", "Edit", new { id=item.int_GroupId }) %> | <%= Html.ActionLink("Details", "Details", new { id=item.int_GroupId })%> | <%= Html.ActionLink("Delete", "Delete", new { id=item.int_GroupId })%> </td> <td> <%= Html.Encode(item.int_GroupId) %> </td> <td> <%= Html.Encode(item.vcr_GroupName) %> </td> <td> <%= Html.Encode(item.txt_GroupDescription) %> </td> <td> <%= Html.Encode(item.bit_Is_Deletable) %> </td> <td> <%= Html.Encode(item.bit_Active) %> </td> <td> <%= Html.Encode(item.int_CreatedBy) %> </td> <td> <%= Html.Encode(String.Format("{0:g}", item.dtm_CreatedDate)) %> </td> <td> <%= Html.Encode(item.int_ModifiedBy) %> </td> <td> <%= Html.Encode(String.Format("{0:g}", item.dtm_ModifiedDate)) %> </td> </tr> <% } %> </table> <% if (Model.HasPreviousPage) { % <%= Html.RouteLink("<<<", "UpcomingDinners", new { page = (Model.PageIndex-1) }) % <% } % <% if (Model.HasNextPage) { % <%= Html.RouteLink("", "UpcomingDinners", new { page = (Model.PageIndex + 1) }) % <% } % <p> <%= Html.ActionLink("Create New", "Create") %> </p>

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  • Eclipse buildtime and runtime classpaths for easy execution of junit test cases

    - by emeraldjava
    Hey, I've a large eclipse project with multiple junit classes. I'm trying to strike a balance between adding runtime resources to the eclipse project classpath, and the need to configure mutliple junit launch configurations. I realise the default eclipse build classpath is inherited by all unit test configurations, but some of my tests require extra runtime resources. I could add these resources to the build classpath, but this does slow my overall project build time (since it has to keep more files in synch). I don't like the idea of including * resources and jars on the runtime classpath. The two options that i have are these, the positive and negative cases as i see it are listed 1 : Add all runtime resources to eclipse classpath. POS I can select a unit test and run it without having to configure the test classpath. POS Extra resources on build classpath means eclipse slows down. NEG More difficult to ensure each test uses the correct resources. 2 : Configure the classpath of each unit test POS I know exactly what resources are being used by a test. POS Smaller build classpath means quicker build and execution by eclipse. NEG Its a pain having to setup multiple separate junit runtime classpaths. Ideally i'd like to configure one base junit runtime configuration, which takes the default eclipse build classpath, adds extra runtime jars and resources. This configuration could then be reused by the specific junit test cases, Is anything like this possible? Looking at a specific junit launch configuration which can be exported to a share project file <?xml version="1.0" encoding="UTF-8" standalone="no"?> <launchConfiguration type="org.eclipse.jdt.junit.launchconfig"> <stringAttribute key="bad_container_name" value="/CR-3089_5_1_branch."/> <listAttribute key="org.eclipse.debug.core.MAPPED_RESOURCE_PATHS"> <listEntry value="/CR-3089_5_1_branch/src/com/x/y/z/ParserJUnitTest.java"/> </listAttribute> <listAttribute key="org.eclipse.debug.core.MAPPED_RESOURCE_TYPES"> <listEntry value="1"/> </listAttribute> <stringAttribute key="org.eclipse.jdt.junit.CONTAINER" value=""/> <booleanAttribute key="org.eclipse.jdt.junit.KEEPRUNNING_ATTR" value="false"/> <stringAttribute key="org.eclipse.jdt.junit.TESTNAME" value=""/> <stringAttribute key="org.eclipse.jdt.junit.TEST_KIND" value="org.eclipse.jdt.junit.loader.junit4"/> <stringAttribute key="org.eclipse.jdt.launching.MAIN_TYPE" value="com.x.y.z.ParserJUnitTest"/> <stringAttribute key="org.eclipse.jdt.launching.PROJECT_ATTR" value="CR-3089_5_1_branch"/> </launchConfiguration> is it possible to extend/reuse this configuration, and parameterise the 'org.eclipse.jdt.launching.MAIN_TYPE' value? I'm aware of the commons launch and jar manifest file solutions to configuring the classpath, but they both seem to assume that an ant build is run before the test can execute. I want to avoid any eclipse dependency on calling an ant target when refactoting code and executing tests. Basically - What is the the easiest way to seperate and maintain the eclipse buildtime classpath and junit runtime classpaths?

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  • VB.Net: exception on ExecuteReader() using OleDbCommand and Access

    - by Shane Fagan
    Hi again all, im getting the error below for this SQL statement in VB.Net 'Fill in the datagrid with the info needed from the accdb file 'to make it simple to access the db connstring = "Provider=Microsoft.ACE.OLEDB.12.0;Data " connstring += "Source=" & Application.StartupPath & "\AuctioneerSystem.accdb" 'make the new connection conn = New System.Data.OleDb.OleDbConnection(connstring) 'the sql command SQLString = "SELECT AllPropertyDetails.PropertyID, Street, Town, County, Acres, Quotas, ResidenceDetails, Status, HighestBid, AskingPrice FROM AllPropertyDetails " SQLString += "INNER JOIN Land ON AllPropertyDetails.PropertyID = Land.PropertyID " SQLString += "WHERE Deleted = False " If PriceRadioButton.Checked = True Then SQLString += "ORDER BY AskingPrice ASC" ElseIf AcresRadioButton.Checked = True Then SQLString += "ORDER BY Acres ASC" End If 'try to open the connection conn.Open() 'if the connection is open If ConnectionState.Open.ToString = "Open" Then 'use the sqlstring and conn to create the command cmd = New System.Data.OleDb.OleDbCommand(SQLString, conn) 'read the db and put it into dr dr = cmd.ExecuteReader If dr.HasRows Then 'if there is rows in the db then make sure the list box is clear 'clear the rows and columns if there is rows in the data grid LandDataGridView.Rows.Clear() LandDataGridView.Columns.Clear() 'add the columns LandDataGridView.Columns.Add("PropertyNumber", "Property Number") LandDataGridView.Columns.Add("Address", "Address") LandDataGridView.Columns.Add("Acres", "No. of Acres") LandDataGridView.Columns.Add("Quotas", "Quotas") LandDataGridView.Columns.Add("Details", "Residence Details") LandDataGridView.Columns.Add("Status", "Status") LandDataGridView.Columns.Add("HighestBid", "Highest Bid") LandDataGridView.Columns.Add("Price", "Asking Price") While dr.Read 'output the fields into the data grid LandDataGridView.Rows.Add( _ dr.Item("PropertyID").ToString _ , dr.Item("Street").ToString & " " & dr.Item("Town").ToString & ", " & dr.Item("County").ToString _ , dr.Item("Acres").ToString _ , dr.Item("Quota").ToString _ , dr.Item("ResidenceDetails").ToString _ , dr.Item("Status").ToString _ , dr.Item("HighestBid").ToString _ , dr.Item("AskingPrice").ToString) End While End If 'close the data reader dr.Close() End If 'close the connection conn.Close() Any ideas why its not working? The fields in the DB and the table names seem ok but its not working :/ The tables are AllPropertyDetails ProperyID:Number Street: text Town: text County: text Status: text HighestBid: Currency AskingPrice: Currency Land PropertyID: Number Acres: Number Quotas: Text ResidenceDetails: text System.InvalidOperationException was unhandled Message="An error occurred creating the form. See Exception.InnerException for details. The error is: No value given for one or more required parameters." Source="AuctioneerProject" StackTrace: at AuctioneerProject.My.MyProject.MyForms.Create__Instance__[T](T Instance) in 17d14f5c-a337-4978-8281-53493378c1071.vb:line 190 at AuctioneerProject.My.MyProject.MyForms.get_LandReport() at AuctioneerProject.ReportsMenu.LandButton_Click(Object sender, EventArgs e) in C:\Users\admin\Desktop\Auctioneers\AuctioneerProject\AuctioneerProject\ReportsMenu.vb:line 4 at System.Windows.Forms.Control.OnClick(EventArgs e) at System.Windows.Forms.Button.OnClick(EventArgs e) at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent) at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.ButtonBase.WndProc(Message& m) at System.Windows.Forms.Button.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg) at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData) at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.Run(ApplicationContext context) at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.OnRun() at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.DoApplicationModel() at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.Run(String[] commandLine) at AuctioneerProject.My.MyApplication.Main(String[] Args) in 17d14f5c-a337-4978-8281-53493378c1071.vb:line 81 at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args) at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args) at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly() at System.Threading.ThreadHelper.ThreadStart_Context(Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ThreadHelper.ThreadStart() InnerException: System.Data.OleDb.OleDbException ErrorCode=-2147217904 Message="No value given for one or more required parameters." Source="Microsoft Office Access Database Engine" StackTrace: at System.Data.OleDb.OleDbCommand.ExecuteCommandTextErrorHandling(OleDbHResult hr) at System.Data.OleDb.OleDbCommand.ExecuteCommandTextForSingleResult(tagDBPARAMS dbParams, Object& executeResult) at System.Data.OleDb.OleDbCommand.ExecuteCommandText(Object& executeResult) at System.Data.OleDb.OleDbCommand.ExecuteCommand(CommandBehavior behavior, Object& executeResult) at System.Data.OleDb.OleDbCommand.ExecuteReaderInternal(CommandBehavior behavior, String method) at System.Data.OleDb.OleDbCommand.ExecuteReader(CommandBehavior behavior) at System.Data.OleDb.OleDbCommand.ExecuteReader() at AuctioneerProject.LandReport.load_Land() in C:\Users\admin\Desktop\Auctioneers\AuctioneerProject\AuctioneerProject\LandReport.vb:line 37 at AuctioneerProject.LandReport.PriceRadioButton_CheckedChanged(Object sender, EventArgs e) in C:\Users\admin\Desktop\Auctioneers\AuctioneerProject\AuctioneerProject\LandReport.vb:line 79 at System.Windows.Forms.RadioButton.OnCheckedChanged(EventArgs e) at System.Windows.Forms.RadioButton.set_Checked(Boolean value) at AuctioneerProject.LandReport.InitializeComponent() in C:\Users\admin\Desktop\Auctioneers\AuctioneerProject\AuctioneerProject\LandReport.designer.vb:line 40 at AuctioneerProject.LandReport..ctor() in C:\Users\admin\Desktop\Auctioneers\AuctioneerProject\AuctioneerProject\LandReport.vb:line 5 InnerException:

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  • ADO.NET (WCF) Data Services Query Interceptor Hangs IIS

    - by PreMagination
    I have an ADO.NET Data Service that's supposed to provide read-only access to a somewhat complex database. Logically I have table-per-type (TPT) inheritance in my data model but the EDM doesn't implement inheritance. (Limitation of EF and navigation properties on derived types. STILL not fixed in EF4!) I can query my EDM directly (using a separate project) using a copy of the query I'm trying to run against the web service, results are returned within 10 seconds. Disabling the query interceptors I'm able to make the same query against the web service, results are returned similarly quickly. I can enable some of the query interceptors and the results are returned slowly, up to a minute or so later. Alternatively, I can enable all the query interceptors, expand less of the properties on the main object I'm querying, and results are returned in a similar period of time. (I've increased some of the timeout periods) Up til this point Sql Profiler indicates the slow-down is the database. (That's a post for a different day) But when I enable all my query interceptors and expand all the properties I'd like to have the IIS worker process pegs the CPU for 20 minutes and a query is never even made against the database. This implies to me that yes, my implementation probably sucks but regardless the Data Services "tier" is having an issue it shouldn't. WCF tracing didn't reveal anything interesting to my untrained eye. Details: Data model: Agent-Person-Student Student has a collection of referrals Students and referrals are private, queries against the web service should only return "your" students and referrals. This means Person and Agent need to be filtered too. Other entities (Agent-Organization-School) can be accessed by anyone who has authenticated. The existing security model is poorly suited to perform this type of filtering for this type of data access, the query interceptors are complicated and cause EF to generate some entertaining sql queries. Sample Interceptor [QueryInterceptor("Agents")] public Expression<Func<Agent, Boolean>> OnQueryAgents() { //Agent is a Person(1), Educator(2), Student(3), or Other Person(13); allow if scope permissions exist return ag => (ag.AgentType.AgentTypeId == 1 || ag.AgentType.AgentTypeId == 2 || ag.AgentType.AgentTypeId == 3 || ag.AgentType.AgentTypeId == 13) && ag.Person.OrganizationPersons.Count<OrganizationPerson>(op => op.Organization.ScopePermissions.Any<ScopePermission> (p => p.ApplicationRoleAccount.Account.UserName == HttpContext.Current.User.Identity.Name && p.ApplicationRoleAccount.Application.ApplicationId == 124) || op.Organization.HierarchyDescendents.Any<OrganizationsHierarchy>(oh => oh.AncestorOrganization.ScopePermissions.Any<ScopePermission> (p => p.ApplicationRoleAccount.Account.UserName == HttpContext.Current.User.Identity.Name && p.ApplicationRoleAccount.Application.ApplicationId == 124))) > 0; } The query interceptors for Person, Student, Referral are all very similar, ie they traverse multiple same/similar tables to look for ScopePermissions as above. Sample Query var referrals = (from r in service.Referrals .Expand("Organization/ParentOrganization") .Expand("Educator/Person/Agent") .Expand("Student/Person/Agent") .Expand("Student") .Expand("Grade") .Expand("ProblemBehavior") .Expand("Location") .Expand("Motivation") .Expand("AdminDecision") .Expand("OthersInvolved") where r.DateCreated >= coupledays && r.DateDeleted == null select r); Any suggestions or tips would be greatly associated, for fixing my current implementation or in developing a new one, with the caveat that the database can't be changed and that ultimately I need to expose a large portion of the database via a web service that limits data access to the data authorized for, for the purpose of data integration with multiple outside parties. THANK YOU!!!

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  • Rails HABTM accepts_nested_attributes_for mapping table

    - by Rabbott
    Currently I have a habtm relationship between a datastream (stream), and a chart. I want to be able to use the 'typical' jquery "add new stream" method to add a new entry into a mapping table that holds the chart_id, and stream_id.. But I think that most examples out there are made to handle a one to many relationship.. The functionality provided here by Ryan Bates is what I'm looking for, But I dont want to use checkboxes, I want to use a select (drop down) to add new items to the mapping table. I need THIS and THIS combined chart.rb class Chart < ActiveRecord::Base has_and_belongs_to_many :streams, :readonly => false, :join_table => 'charts_streams' accepts_nested_attributes_for :streams, :reject_if => lambda { |a| a.values.all?(&:blank?) }, :allow_destroy => true stream.rb class Stream < ActiveRecord::Base has_and_belongs_to_many :charts, :readonly => false, :join_table => 'charts_streams' application.js /* * Method used to add new child form partials */ $('form a.add_child').click(function() { var assoc = $(this).attr('data-association'); var content = $('#' + assoc + '_fields_template').html(); var regexp = new RegExp('new_' + assoc, 'g'); var new_id = new Date().getTime(); var newElements = jQuery(content.replace(regexp, new_id)).hide(); $(this).parent().before(newElements).prev().slideFadeToggle(); return false; }); /* * Method used to remove child form partials */ $('form a.remove_child').live('click', function() { if(confirm('Are you sure?')) { var hidden_field = $(this).prev('input[type=hidden]')[0]; if(hidden_field) { hidden_field.value = '1'; } $(this).parents('.fields').slideFadeToggle(); } return false; }); _form.html.erb <div id="streams"> <h4>Streams</h4> <% form.fields_for :streams do |stream_form| %> <%= render :partial => "stream", :locals => {:f => stream_form} %> <% end %> </div> <p><%= add_child_link 'Add a stream', :streams %></p> <%= new_child_fields_template(form, :streams) %> _stream.html.erb <div class="fields"> <p> <%= f.label :stream_id %><br /> <%= select_tag "chart[stream_ids][]", options_for_select(@streams.map {|s| [s.label, s.id]}, f.object.id) %> </p> <p><%= remove_child_link 'Remove stream', f %></p> </div> This may be overkill and what I am looking to do could be much easier.. Basically when I create a chart I want to be able to add as many streams to it as I want, using the javascript for adding a new entry, and removing an old one... Thanks for the help! This is 'working' but gives me a ActiveRecord::ReadOnlyRecord error when it hits the chart.update_attributes method.. am I adding the the :readonly = false in the wrong spot? Or am I just doing it completely wrong?

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  • "Launch Failed. Binary Not Found." Snow Leopard and Eclipse C/C++ IDE issue.

    - by Alex
    Not a question, I've just scoured the internet in search of a solution for this problem and thought I'd share it with the good folks of SO. I'll put it in plain terms so that it's accessible to newbs. :) (Apologies if this is the wrong place -- just trying to be helpful.) This issue occurs with almost any user OS X Snow Leopard who tries to use the Eclipse C/C++ IDE, but is particularly annoying for the people (like me) who were using the Eclipse C/C++ IDE in Leopard, and were unable to work with Eclipse anymore when they upgraded. The issue occurs When users go to build/compile/link their software. They get the following error: Launch Failed. Binary Not Found. Further, the "binaries" branch in the project window on the left is simply nonexistent. THE PROBLEM: is that GCC 4.2 (the GNU Compiler Collection) that comes with Snow Leopard compiles binaries in 64-bit by default. Unfortunately, the linker that Eclipse uses does not understand 64-bit binaries; it reads 32-bit binaries. There may be other issues here, but in short, they culminate in no binary being generated, at least not one that Eclipse can read, which translates into Eclipse not finding the binaries. Hence the error. One solution is to add an -arch i686 flag when making the file, but manually making the file every time is annoying. Luckily for us, Snow Leopard also comes with GCC 4.0, which compiles in 32 bits by default. So one solution is merely to link this as the default compiler. This is the way I did it. THE SOLUTION: The GCCs are in /usr/bin, which is normally a hidden folder, so you can't see it in the Finder unless you explicitly tell the system that you want to see hidden folders. Anyway, what you want to do is go to the /usr/bin folder and delete the path that links the GCC command with GCC 4.2 and add a path that links the GCC command with GCC 4.0. In other words, when you or Eclipse try to access GCC, we want the command to go to the compiler that builds in 32 bits by default, so that the linker can read the files; we do not want it to go to the compiler that compiles in 64 bits. The best way to do this is to go to Applications/Utilities, and select the app called Terminal. A text prompt should come up. It should say something like "(Computer Name):~ (Username)$ " (with a space for you user input at the end). The way to accomplish the tasks above is to enter the following commands, entering each one in sequence VERBATIM, and pressing enter after each individual line. cd /usr/bin rm cc gcc c++ g++ ln -s gcc-4.0 cc ln -s gcc-4.0 gcc ln -s c++-4.0 c++ ln -s g++-4.0 g++ Like me, you will probably get an error that tells you you don't have permission to access these files. If so, try the following commands instead: cd /usr/bin sudo rm cc gcc c++ g++ sudo ln -s gcc-4.0 cc sudo ln -s gcc-4.0 gcc sudo ln -s c++-4.0 c++ sudo ln -s g++-4.0 g++ Sudo may prompt you for a password. If you've never used sudo before, try just pressing enter. If that doesn't work, try the password for your main admin account. OTHER POSSIBLE SOLUTIONS You may be able to enter build variables into Eclipse. I tried this, but I don't know enough about it. If you want to feel it out, the flag you will probably need is -arch i686. In earnest, GCC-4.0 worked for me all this time, and I don't see any reason to switch now. There may be a way to alter the default for the compiler itself, but once again, I don't know enough about it. Hope this has been helpful and informative. Good coding!

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  • Jquery removeClass Not Working

    - by Wade D Ouellet
    Hey, My site is here: http://treethink.com What I have going is a news ticker on the right that is inside a jquery function. The function starts right away and extracts the news ticker and then retracts it as it should. When a navigation it adds a class to the div, which the function then checks for to see if it should stop extracting/retracting. This all works great. The problem I am having is that after the close button is clicked (in the content window), the removeClass won't work. This means that it keeps thinking the window is open and therefore the conditional statement inside the function won't let it extract and retract again. With a simple firebug check, it's showing that the class isn't being removed period. It's not the cboxClose id that it's not finding because I tried changing that to just "a" tags in general and it still wouldn't work so it's something to do with the jQuery for sure. Someone also suggested a quick alert() to check if the callback is working but I'm not sure what this is. Here is the code: /* News Ticker */ /* Initially hide all news items */ $('#ticker1').hide(); $('#ticker2').hide(); $('#ticker3').hide(); var randomNum = Math.floor(Math.random()*3); /* Pick random number */ newsTicker(); function newsTicker() { if (!$("#ticker").hasClass("noTicker")) { $("#ticker").oneTime(2000,function(i) { /* Do the first pull out once */ $('div#ticker div:eq(' + randomNum + ')').show(); /* Select div with random number */ $("#ticker").animate({right: "0"}, {duration: 800 }); /* Pull out ticker with random div */ }); $("#ticker").oneTime(15000,function(i) { /* Do the first retract once */ $("#ticker").animate({right: "-450"}, {duration: 800}); /* Retract ticker */ $("#ticker").oneTime(1000,function(i) { /* Afterwards */ $('div#ticker div:eq(' + (randomNum) + ')').hide(); /* Hide that div */ }); }); $("#ticker").everyTime(16500,function(i) { /* Everytime timer gets to certain point */ /* Show next div */ randomNum = (randomNum+1)%3; $('div#ticker div:eq(' + (randomNum) + ')').show(); $("#ticker").animate({right: "0"}, {duration: 800}); /* Pull out right away */ $("#ticker").oneTime(15000,function(i) { /* Afterwards */ $("#ticker").animate({right: "-450"}, {duration: 800});/* Retract ticker */ }); $("#ticker").oneTime(16000,function(i) { /* Afterwards */ /* Hide all divs */ $('#ticker1').hide(); $('#ticker2').hide(); $('#ticker3').hide(); }); }); } else { $("#ticker").animate({right: "-450"}, {duration: 800}); /* Retract ticker */ $("#ticker").oneTime(1000,function(i) { /* Afterwards */ $('div#ticker div:eq(' + (randomNum) + ')').hide(); /* Hide that div */ }); $("#ticker").stopTime(); } } /* when nav item is clicked re-run news ticker function but give it new class to prevent activity */ $("#nav li").click(function() { $("#ticker").addClass("noTicker"); newsTicker(); }); /* when close button is clicked re-run news ticker function but take away new class so activity can start again */ $("#cboxClose").click(function() { $("#ticker").removeClass("noTicker"); newsTicker(); }); Thanks, Wade

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  • Comments show up in database, but only show up on my index page after a refresh.

    - by Truong
    Hi, I have AJAX, PHP, jquery, and mySQL in this very simple website I'm trying to make. All there is is a text area that sends data to the database and uses ajax\jquery to display that data onto the index page. For some reason though, I press submit and the data goes to the database, but I have to refresh the page myself to see that data on the page. I'm assuming that the problem has to do with my AJAX JQuery or even some mistake in the index. Also, when I type the text into the text area and press submit, the text remains in the textarea until I refresh the page. Haha, sorry if this is such a noob question.. I'm trying to learn. Thanks so much Here is the AJAX: <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.0/jquery.min.js"></script> <script type="text/javascript"> $(function() { $(".submit").click(function() { var comment = $("#comment").val(); var post_id = $("#post").val(); var dataString = '&comment=' + comment if(comment=='') { alert('Fill something in please!'); } else { $("#flash").show(); $("#flash").fadeIn(400).html('<img src="noworries.jpg" /> '); $.ajax({ type: "POST", url: "commentajax.php", data: dataString, cache: false, success: function(html){ $("ol#update").append(html); $("ol#update li:last").fadeIn("slow"); $("#flash").hide(); } }); }return false; }); }); </script> Here is the index\form area: <body> <div id="container"><img src="banner.jpg" width="890" height="150" alt="title" /></div> <id="update" class="timeline"> <div id="flash"></div> <div id="container"> <form action="#" method="post"> <textarea name="comment" id="comment" cols="35" rows="4"></textarea><br /> <input name="submit" type="submit" class="submit" id="submit" value=" Submit Comment " /><br /> </form> </div> <id="update" class="timeline"> <?php include('config.php'); //$post_id value comes from the POSTS table $prefix="I'm happy when"; $sql=mysql_query("select * from comments order by com_id desc"); while($row=mysql_fetch_array($sql)) { $comment=$row['com_dis']; ?> <!--Displaying comments--> <div id="container"> <class="box"> <?php echo "$prefix $comment"; ?> </div> <?php } ?> Here is my commentajax.php <?php include('config.php'); if($_POST) { $comment=$_POST['comment']; $comment=mysql_real_escape_string($comment); mysql_query("INSERT INTO comments(com_id,com_dis) VALUES ('NULL', '$comment')"); } ?> <li class="box"><br /> <?php echo $comment; ?> </li> I'm sorry for so much code but I just started learning this four days ago and this is probably one of the last bugs until the website is functional.

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  • How to get the child elementsvalue , when the parent element contains different number of child Elem

    - by Subhen
    Hi, I have the following XML Structure: <DIDL-Lite xmlns="urn:schemas-upnp-org:metadata-1-0/DIDL-Lite/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:upnp="urn:schemas-upnp-org:metadata-1-0/upnp/" xmlns:dlna="urn:schemas-dlna-org:metadata-1-0/"> <item id="1268" parentID="20" restricted="1"> <upnp:class>object.item.audioItem.musicTrack</upnp:class> <dc:title>Hey</dc:title> <dc:date>2010-03-17T12:12:26</dc:date> <upnp:albumArtURI dlna:profileID="PNG_TN" xmlns:dlna="urn:schemas-dlna-org:metadata-1-0">URL/albumart/22.png</upnp:albumArtURI> <upnp:icon>URL/albumart/22.png</upnp:icon> <dc:creator>land</dc:creator> <upnp:artist>sland</upnp:artist> <upnp:album>Change</upnp:album> <upnp:genre>Rock</upnp:genre> <res protocolInfo="http-get:*:audio/mpeg:DLNA.ORG_PN=MP3;DLNA.ORG_OP=01;DLNA.ORG_CI=0;DLNA.ORG_FLAGS=01700000000000000000000000000000" size="9527987" duration="0:03:58">URL/1268.mp3</res> <res protocolInfo="http-get:*:image/png:DLNA.ORG_PN=PNG_TN;DLNA.ORG_CI=01;DLNA.ORG_FLAGS=00f00000000000000000000000000000" colorDepth="24" resolution="160x160">URL/albumart/22.png</res> </item> <item id="1269" parentID="20" restricted="1"> <upnp:class>object.item.audioItem.musicTrack</upnp:class> <dc:title>Indian </dc:title> <dc:date>2010-03-17T12:06:32</dc:date> <upnp:albumArtURI dlna:profileID="PNG_TN" xmlns:dlna="urn:schemas-dlna-org:metadata-1-0">URL/albumart/13.png</upnp:albumArtURI> <upnp:icon>URL/albumart/13.png</upnp:icon> <dc:creator>MC</dc:creator> <upnp:artist>MC</upnp:artist> <upnp:album>manimal</upnp:album> <upnp:genre>Rap</upnp:genre> <res protocolInfo="http-get:*:audio/mpeg:DLNA.ORG_PN=MP3;DLNA.ORG_OP=01;DLNA.ORG_CI=0;DLNA.ORG_FLAGS=01700000000000000000000000000000" size="8166707" duration="0:03:24">URL/1269.mp3</res> <res protocolInfo="http-get:*:image/png:DLNA.ORG_PN=PNG_TN;DLNA.ORG_CI=01;DLNA.ORG_FLAGS=00f00000000000000000000000000000" colorDepth="24" resolution="160x160">URL/albumart/13.png</res> </item> <item id="1277" parentID="20" restricted="1"> <upnp:class>object.item.videoItem.movie</upnp:class> <dc:title>IronMan_TeaserTrailer-full_NEW.mpg</dc:title> <dc:date>2010-03-17T12:50:24</dc:date> <upnp:genre>Unknown</upnp:genre> <res protocolInfo="http-get:*:video/mpeg:DLNA.ORG_PN=(NULL);DLNA.ORG_OP=01;DLNA.ORG_CI=0;DLNA.ORG_FLAGS=01700000000000000000000000000000" size="98926592" resolution="1920x1080" duration="0:02:30">URL/1277.mpg</res> </item> </DIDL-Lite> Here in the last Elemnt Item , there are few missing elements like icon,albumArtURi ..etc. Now whhile Ity to access the Values by following LINQ to XML query, var vAudioData = from xAudioinfo in xResponse.Descendants(ns + "DIDL-Lite").Elements(ns + "item").Where(x=>!x.Elements(upnp+"album").l orderby ((string)xAudioinfo.Element(upnp + "artist")).Trim() select new RMSMedia { strAudioTitle = ((string)xAudioinfo.Element(dc + "title")).Trim(),//((string)xAudioinfo.Attribute("audioAlbumcoverImage")).Trim()=="" ? ((string)xAudioinfo.Element("Song")).Trim():"" }; It show object reference is not set to reference of object. I do undersrand this is because of missing elements, is there any way I can pre-check if the elements exist , or check the number of elemnts inside item or any other way. Any help is deeply appreciated. Thanks, Subhen

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  • non-static variable cannot be referenced from a static context (java)

    - by Greg
    I ask that you ignore all logic.. i was taught poorly at first and so i still dont understand everything about static crap and its killing me. My error is with every single variable that i declare then try to use later inside my methods... i get the non-static variable cannot~~ error I can simply put all the rough coding of my methods inside my cases, and it works but then i cannot use recursion... What i really need is someone to help on the syntax and point me on the right direction of how to have my methods recognize my variables at the top... like compareCount etc thanks public class MyProgram7 { public static void main (String[]args) throws IOException{ Scanner scan = new Scanner(System.in); int compareCount = 0; int low = 0; int high = 0; int mid = 0; int key = 0; Scanner temp; int[]list; String menu, outputString; int option = 1; boolean found = false; // Prompt the user to select an option menu = "\n\t1 Reads file" + "\n\t2 Finds a specific number in the list" + "\n\t3 Prints how many comparisons were needed" + "\n\t0 Quit\n\n\n"; System.out.println(menu); System.out.print("\tEnter your selection: "); option = scan.nextInt(); // Keep reading data until the user enters 0 while (option != 0) { switch (option) { case 1: readFile(); break; case 2: findKey(list,low,high,key); break; case 3: printCount(); break; default: outputString = "\nInvalid Selection\n"; System.out.println(outputString); break; }//end of switch System.out.println(menu); System.out.print("\tEnter your selection: "); option = scan.nextInt(); }//end of while }//end of main public static void readFile() { int i = 0; temp = new Scanner(new File("CS1302_Data7_2010.txt")); while(temp.hasNext()) { list[i]= temp.nextInt(); i++; }//end of while temp.close(); System.out.println("File Found..."); }//end of readFile() public static void findKey() { while(found!=true) { while(key < 100 || key > 999) { System.out.println("Please enter the number you would like to search for? ie 350: "); key = scan.nextInt(); }//end of inside while //base if (low <= high) { mid = ((low+high)/2); if (key == list[mid]) { found = true; compareCount++; }//end of inside if }//end of outside if else if (key < list[mid]) { compareCount++; high = mid-1; findKey(list,low,high,key); }//end of else if else { compareCount++; low = mid+1; findKey(list,low,high,key); }//end of else }//end of outside while }//end of findKey() public static void printCount() { System.out.println("Total number of comparisons is: " + compareCount); }//end of printCount }//end of class

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  • Problem with System.Diagnostics.Process RedirectStandardOutput to appear in Winforms Textbox in real

    - by Jonathan Websdale
    I'm having problems with the redirected output from a console application being presented in a Winforms textbox in real-time. The messages are being produced line by line however as soon as interaction with the Form is called for, nothing appears to be displayed. Following the many examples on both Stackoverflow and other forums, I can't seem to get the redirected output from the process to display in the textbox on the form until the process completes. By adding debug lines to the 'stringWriter_StringWritten' method and writing the redirected messages to the debug window I can see the messages arriving during the running of the process but these messages will not appear on the form's textbox until the process completes. Grateful for any advice on this. Here's an extract of the code public partial class RunExternalProcess : Form { private static int numberOutputLines = 0; private static MyStringWriter stringWriter; public RunExternalProcess() { InitializeComponent(); // Create the output message writter RunExternalProcess.stringWriter = new MyStringWriter(); stringWriter.StringWritten += new EventHandler(stringWriter_StringWritten); System.Diagnostics.ProcessStartInfo startInfo = new System.Diagnostics.ProcessStartInfo(); startInfo.FileName = "myCommandLineApp.exe"; startInfo.UseShellExecute = false; startInfo.RedirectStandardOutput = true; startInfo.CreateNoWindow = true; startInfo.WindowStyle = System.Diagnostics.ProcessWindowStyle.Hidden; using (var pProcess = new System.Diagnostics.Process()) { pProcess.StartInfo = startInfo; pProcess.OutputDataReceived += new System.Diagnostics.DataReceivedEventHandler(RunExternalProcess.Process_OutputDataReceived); pProcess.EnableRaisingEvents = true; try { pProcess.Start(); pProcess.BeginOutputReadLine(); pProcess.BeginErrorReadLine(); pProcess.WaitForExit(); } catch (Exception ex) { MessageBox.Show(ex.ToString()); } finally { pProcess.OutputDataReceived -= new System.Diagnostics.DataReceivedEventHandler(RunExternalProcess.Process_OutputDataReceived); } } } private static void Process_OutputDataReceived(object sender, System.Diagnostics.DataReceivedEventArgs e) { if (!string.IsNullOrEmpty(e.Data)) { RunExternalProcess.OutputMessage(e.Data); } } private static void OutputMessage(string message) { RunExternalProcess.stringWriter.WriteLine("[" + RunExternalProcess.numberOutputLines++.ToString() + "] - " + message); } private void stringWriter_StringWritten(object sender, EventArgs e) { System.Diagnostics.Debug.WriteLine(((MyStringWriter)sender).GetStringBuilder().ToString()); SetProgressTextBox(((MyStringWriter)sender).GetStringBuilder().ToString()); } private delegate void SetProgressTextBoxCallback(string text); private void SetProgressTextBox(string text) { if (this.ProgressTextBox.InvokeRequired) { SetProgressTextBoxCallback callback = new SetProgressTextBoxCallback(SetProgressTextBox); this.BeginInvoke(callback, new object[] { text }); } else { this.ProgressTextBox.Text = text; this.ProgressTextBox.Select(this.ProgressTextBox.Text.Length, 0); this.ProgressTextBox.ScrollToCaret(); } } } public class MyStringWriter : System.IO.StringWriter { // Define the event. public event EventHandler StringWritten; public MyStringWriter() : base() { } public MyStringWriter(StringBuilder sb) : base(sb) { } public MyStringWriter(StringBuilder sb, IFormatProvider formatProvider) : base(sb, formatProvider) { } public MyStringWriter(IFormatProvider formatProvider) : base(formatProvider) { } protected virtual void OnStringWritten() { if (StringWritten != null) { StringWritten(this, EventArgs.Empty); } } public override void Write(char value) { base.Write(value); this.OnStringWritten(); } public override void Write(char[] buffer, int index, int count) { base.Write(buffer, index, count); this.OnStringWritten(); } public override void Write(string value) { base.Write(value); this.OnStringWritten(); } }

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  • How to get selected values from a dynamically created DropDownList Array after PostBack (Button Click)

    - by user739280
    I have a CheckBoxList that contains Employee Names on a Wizard Step. When employees are selected and the active step is changed, the Wizard1_ActiveStepChanged function is called and it dynamically creates a DropDownList Array for each employee that is selected. Each DropDownList specifies a condition of the employee. The DropDownList is created properly. When the user clicks submit, the DropDownList array is deleted and no selected values can be pulled from the array. I understand this is an issue with the PostBack and can be fixed with ViewState, but I am trying to figure out what I can do to fix it. ViewState is enabled for the checkboxlist and the DropDownList. This is what I have in the body of my System.Web.UI.Page class private int empcount; private DropDownList[] DDL_Emp { get { return (DropDownList[])ViewState["DDL_Emp"]; } set { ViewState["DDL_Emp"] = value; } } The relevant code: protected void Wizard1_ActiveStepChanged(object sender, EventArgs e) { if (Request.QueryString["type"] == "Accident" && BulletedList1.Items.Count > 0) { this.empcount = 0; for (int i = 0; i < CBL_EmpInvolved.Items.Count; i++) { if (CBL_EmpInvolved.Items[i].Selected) { this.empcount++; } } if(this.empcount > 0) { this.DDL_Emp = new DropDownList[this.empcount]; for (int i = 0, j=0; i < CBL_EmpInvolved.Items.Count; i++) { if (CBL_EmpInvolved.Items[i].Selected) { List<ListItem> cond = new List<ListItem>(); cond.Add(new ListItem("Disabled", CBL_EmpInvolved.Items[i].Value)); cond.Add(new ListItem("Diseased - Fatality", CBL_EmpInvolved.Items[i].Value)); cond.Add(new ListItem("On Treatment - Short Term Disability", CBL_EmpInvolved.Items[i].Value)); cond.Add(new ListItem("On Treatment - Long Term Disability", CBL_EmpInvolved.Items[i].Value)); cond.Add(new ListItem("Treated - Back to Work", CBL_EmpInvolved.Items[i].Value)); cond.Add(new ListItem("Treated - Relocated", CBL_EmpInvolved.Items[i].Value)); cond.Add(new ListItem("Treated - Transferred", CBL_EmpInvolved.Items[i].Value)); this.DDL_Emp[j] = new DropDownList(); this.DDL_Emp[j].ID = "DD_LabCondition_" + CBL_EmpInvolved.Items[i].Value; this.DDL_Emp[j].EnableViewState = true; this.DDL_Emp[j].Visible = true; this.DDL_Emp[j].Items.AddRange(cond.ToArray()); this.DDL_Emp[j].Items.Insert(0, new ListItem("-- Select condition of employee: " + CBL_EmpInvolved.Items[i].Text, "")); PH_LabCondition.Controls.Add(this.DDL_Emp[j]); j++; } } PH_LabCondition.Visible = true; MV_LabCondition.Visible = true; Label1_ReportTitle.Text += "Control Count: " + PH_LabCondition.Controls.Count.ToString(); } MV_LabCondition.ActiveViewIndex = 1; MV_LostTime.ActiveViewIndex = 1; } } This code is giving me the following error now: Type 'System.Web.UI.WebControls.DropDownList' in Assembly 'System.Web, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' is not marked as serializable. I've tried changing buttons to images, playing with the AutoPostBack feature. I'm lost on how to get my dropdownlist array saved to the ViewState and accessing it after the postback.

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  • OnSelectedIndexChange only fires on second click when using custom page validation script

    - by Kris P
    Okay.. this is hard to explain, so here it goes. I have an update panel which contains a number of controls. The update panel is triggered by the OnSelectedIndexChanged event of a dropdownlist called: ddlUSCitizenshipStatus. It works as expected when I selected a new item. However, if I leave ddlUSCitizenshipStatus with the default value, and then click "submit" button on the page, the requiredfieldvalidators say there is an error on ddlUSCitizenshipStatus (which it should, as I never selected a value). So I then choose a value, the error message goes away on ddlUSCitizenshipStatus, however the updatepanel does not refresh. I've debugged this locally and the OnSelectedIndexChanged event for ddlUSCitizenshipStatus does not fire. If I choose an item in the ddlUSCitizenshipStatus list a second time, the OnSelectedIndexChanged server event fires and the update panel refreshes and works as expected. The issue is, I have to select an item in ddlUSCitizenshipStatus twice, after failed validation, before the updatepanel it's sitting in updates. The submit button on the page looks like this: <asp:LinkButton ID="btnSubmitPage1" runat="server" CssClass="continueButton" OnClick="btnSubmitPage1_Click" CausesValidation="true" OnClientClick="javascript: return ValidatePage();" /> If I remove my custom OnClientClick script, making the submit button look like this: <asp:LinkButton ID="btnSubmitPage1" runat="server" CssClass="continueButton" OnClick="btnSubmitPage1_Click" CausesValidation="true" ValidationGroup="valGrpAdditionalInformation" /> The dropdownlist, update panel, and reguiredfieldvalidator all work as expected. However, I need to run that custom "ValidatePage()" script when the button is clicked. Below is what my ValidatePage script looks like. I've been troubleshooting this for more hours than I can count.... I hope someone is able to help me. Please let me know if you can figure out why ddlUSCitizenshipStatus doesn't update the updatepanel until the second click after a failed validation. function ValidatePage() { var blnDoPostBack = true; if (typeof(Page_ClientValidate) == 'function' ) { //Client side validation can occur, so lets do it. //Validate each validation group. for( var i = 0; i < Page_ValidationSummaries.length; i++ ) Page_ClientValidate( Page_ValidationSummaries[i].validationGroup.toString() ); //Validate every validation control on the page. for (var i = 0; i < Page_Validators.length; i++) ValidatorValidate(Page_Validators[i]); //Figure out which validation groups have errors, store a list of these validation groups in an array. var aryValGrpsWithErrors = []; for( var i = 0; i < Page_Validators.length; i++ ) { if( !Page_Validators[i].isvalid ) { //This particular validator has thrown an error. //Remeber to not do a postback, as we were able to catch this validation error client side. blnDoPostBack = false; //If we haven't already registered the validation group this erroring validation control is a part of, do so now. if( aryValGrpsWithErrors.indexOf( Page_Validators[i].validationGroup.toString() ) == -1 ) aryValGrpsWithErrors[aryValGrpsWithErrors.length++] = Page_Validators[i].validationGroup.toString(); } } //Now display every validation summary that has !isvalid validation controls in it. for( var i = 0; i < Page_ValidationSummaries.length; i++ ) { if( aryValGrpsWithErrors.indexOf( Page_ValidationSummaries[i].validationGroup.toString() ) != -1 ) { Page_ValidationSummaries[i].style.display = ""; document.getElementById( Page_ValidationSummaries[i].id.toString() + "Wrapper" ).style.display = ""; } else { //The current validation summary does not have any error messages in it, so make sure it's hidden. Page_ValidationSummaries[i].style.display = "none"; document.getElementById( Page_ValidationSummaries[i].id.toString() + "Wrapper" ).style.display = "none"; } } } return blnDoPostBack; }

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  • Reading XML element & child nodes using LINQ in Vb.net- help me in where condition :(

    - by New Linq Baby
    Hi, I am new in LINQ world. I need an urgent help in reading the xml elements using LINQ with specific where condition. I need to find the max air_temp for a county i.e where county name = "Boone" and hour id = "06/03/2009 09:00CDT" i tried something like below, but no luck : Dim custs As IEnumerable = From c In Element.Load("C:\meridian.xml").Elements("county") _ Select c.Elements("hour").Elements("air_temp").Max() For Each x In custs Response.Write(custs(0).ToString()) Next ------------------- here is the xml file : <forecasts> <issued>06/02/2009 12:00CDT</issued> - <county name="Adair"> - <hour id="06/02/2009 12:00CDT"> <air_temp>61</air_temp> <cloud_cover>overcast</cloud_cover> <dew_point>59</dew_point> <precip_prob>90</precip_prob> <precip_rate>0.12</precip_rate> <precip_type>rain</precip_type> <snow_rate>0.0</snow_rate> <wind_direction>NE</wind_direction> <wind_speed>12</wind_speed> <dew_point_confidence>-3/+3</dew_point_confidence> <road_temp>64</road_temp> <road_frost_prob>0</road_frost_prob> <road_potential_evap_rate>429</road_potential_evap_rate> <road_temp_confidence>-3/+2</road_temp_confidence> <dew_point_confidence>-3/+3</dew_point_confidence> <bridge_temp>63</bridge_temp> <bridge_temp_confidence>-4/+2</bridge_temp_confidence> <bridge_frost>NO</bridge_frost> </hour> - <hour id="06/02/2009 13:00CDT"> <air_temp>61</air_temp> <cloud_cover>overcast</cloud_cover> <dew_point>60</dew_point> <precip_prob>70</precip_prob> <precip_rate>0.01</precip_rate> <precip_type>rain</precip_type> <snow_rate>0.0</snow_rate> <wind_direction>ENE</wind_direction> <wind_speed>10</wind_speed> <dew_point_confidence>-3/+3</dew_point_confidence> <road_temp>65</road_temp> <road_frost_prob>0</road_frost_prob> <road_potential_evap_rate>411</road_potential_evap_rate> <road_temp_confidence>-3/+2</road_temp_confidence> <dew_point_confidence>-3/+3</dew_point_confidence> <bridge_temp>64</bridge_temp> <bridge_temp_confidence>-4/+1</bridge_temp_confidence> <bridge_frost>NO</bridge_frost> </hour>

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  • Can't get heroku work with rails 3.x postgresql

    - by framomo86
    I followed Heroku official guides to push rails project to heroku. The application.rb file is ok, I added pg gem and database.yml in the right way. When I push to heroku I get: -----> Preparing app for Rails asset pipeline Detected manifest.yml, assuming assets were compiled locally But when I open heroku via heroku open I get an error. I put heroku logs and get this. Started GET "/" for 93.45.227.255 at 2012-10-11 13:28:04 +0000 2012-10-11T13:28:04+00:00 app[web.1]: Processing by ProductsController#index as HTML 2012-10-11T13:28:04+00:00 app[web.1]: : SELECT a.attname, format_type(a.atttypid, a.atttypmod), d.adsrc, a.attnotnull 2012-10-11T13:28:04+00:00 app[web.1]: ActiveRecord::StatementInvalid (PG::Error: ERROR: relation "products" does not exist 2012-10-11T13:28:04+00:00 app[web.1]: LINE 4: WHERE a.attrelid = '"products"'::regclass 2012-10-11T13:28:04+00:00 heroku[router]: GET gift4.herokuapp.com/ dyno=web.1 queue=0 wait=0ms service=203ms status=500 bytes=643 2012-10-11T13:28:04+00:00 app[web.1]: ): 2012-10-11T13:28:04+00:00 app[web.1]: ON a.attrelid = d.adrelid AND a.attnum = d.adnum 2012-10-11T13:28:04+00:00 app[web.1]: 2012-10-11T13:28:04+00:00 app[web.1]: 2012-10-11T13:28:04+00:00 app[web.1]: ^ 2012-10-11T13:28:04+00:00 app[web.1]: 2012-10-11T13:28:04+00:00 app[web.1]: Completed 500 Internal Server Error in 72ms 2012-10-11T13:28:04+00:00 app[web.1]: FROM pg_attribute a LEFT JOIN pg_attrdef d 2012-10-11T13:28:04+00:00 app[web.1]: WHERE a.attrelid = '"products"'::regclass 2012-10-11T13:28:04+00:00 app[web.1]: AND a.attnum > 0 AND NOT a.attisdropped 2012-10-11T13:28:04+00:00 app[web.1]: ORDER BY a.attnum 2012-10-11T13:28:04+00:00 app[web.1]: app/controllers/products_controller.rb:5:in `index' 2012-10-11T13:28:04+00:00 heroku[router]: GET gift4.herokuapp.com/favicon.ico d So I tried heroku run rake db:reset And get this Heroku client internal error. ! Search for help at: https://help.heroku.com ! Or report a bug at: https://github.com/heroku/heroku/issues/new Error: Operation timed out - connect(2) (Errno::ETIMEDOUT) Backtrace: /Users/francescochecco/.rvm/gems/ruby-1.9.3-p194/gems/heroku-2.32.6/lib/heroku/client/rendezvous.rb:39:in `initialize' /Users/francescochecco/.rvm/gems/ruby-1.9.3-p194/gems/heroku-2.32.6/lib/heroku/client/rendezvous.rb:39:in `open' /Users/francescochecco/.rvm/gems/ruby-1.9.3-p194/gems/heroku-2.32.6/lib/heroku/client/rendezvous.rb:39:in `block in start' /Users/francescochecco/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/timeout.rb:68:in `timeout' /Users/francescochecco/.rvm/gems/ruby-1.9.3-p194/gems/heroku-2.32.6/lib/heroku/client/rendezvous.rb:31:in `start' /Users/francescochecco/.rvm/gems/ruby-1.9.3-p194/gems/heroku-2.32.6/lib/heroku/command/run.rb:125:in `rendezvous_session' /Users/francescochecco/.rvm/gems/ruby-1.9.3-p194/gems/heroku-2.32.6/lib/heroku/command/run.rb:112:in `run_attached' /Users/francescochecco/.rvm/gems/ruby-1.9.3-p194/gems/heroku-2.32.6/lib/heroku/command/run.rb:21:in `index' /Users/francescochecco/.rvm/gems/ruby-1.9.3-p194/gems/heroku-2.32.6/lib/heroku/command.rb:206:in `run' /Users/francescochecco/.rvm/gems/ruby-1.9.3-p194/gems/heroku-2.32.6/lib/heroku/cli.rb:28:in `start' /Users/francescochecco/.rvm/gems/ruby-1.9.3-p194/gems/heroku-2.32.6/bin/heroku:16:in `<top (required)>' /Users/francescochecco/.rvm/gems/ruby-1.9.3-p194/bin/heroku:19:in `load' /Users/francescochecco/.rvm/gems/ruby-1.9.3-p194/bin/heroku:19:in `<main>' /Users/francescochecco/.rvm/gems/ruby-1.9.3-p194/bin/ruby_noexec_wrapper:14:in `eval' /Users/francescochecco/.rvm/gems/ruby-1.9.3-p194/bin/ruby_noexec_wrapper:14:in `<main>' Command: heroku run rake db:reset Version: heroku-gem/2.32.6 (x86_64-darwin11.3.0) ruby/1.9.3 autoupdate I tried everything. Anyone could help?

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  • why the data can't dispaly in the form???

    - by shimaTun
    I've created a code to view the data. the data can't display at the form... the code : <?php //======================================================================================================================= PROCESS DATA ======================================================= START. include "connectioncomplaint.php"; ?> <?php $subject = $_GET['type']; $comment = $_GET['id']; //echo 'test : ' . $name; //Tarik data dari sini $queryDetail = " SELECT * FROM campuscomplaint " . " WHERE subject = '" . $subject . "' AND comment = '" . $comment . "' "; //echo 'QUERY DETAIL :' . $queryDetail . '<br>' ; $resultDetail = mysql_query($queryDetail); //echo 'RESULT DETAIL :' . $resultDetail + 0 . '<br>' ; $detail = mysql_fetch_array($resultDetail); //echo $detail . '<br>'; //echo 'detail subject is : ' . $detail['subject'] . '<br>'; //echo 'detail comment is : ' . $detail['comment'] . '<br>'; //echo $detail[$x] . '<br>'; ?> code for form: <tr> <td bordercolor="#FFFFFF" bgcolor="#FFFFFF" class="register style5">From:</td> <td bordercolor="#FFFFFF" bgcolor="#FFFFFF" class="register style5"><input type="text" name="to" size="40" maxlength="80" value="<?php echo $detail['userid']; ?>"/></td> </tr> <tr> <td width="38%" bordercolor="#FFFFFF" bgcolor="#FFFFFF" class="register style5">Subject:</td> <td width="62%" bordercolor="#FFFFFF" bgcolor="#FFFFFF" class="register style5"><input type="text" name="subject" size="40" maxlength="80" value="<?php echo $detail['subject']; ?>"/></td> </tr> <tr> <td bordercolor="#FFFFFF" bgcolor="#FFFFFF" class="register style5">Comment:</td> <td bordercolor="#FFFFFF" bgcolor="#FFFFFF" class="register style5"><textarea name="comment" rows="5" cols="40"><?php echo $detail['message']; ?></textarea></td> </tr> <tr> <td bordercolor="#FFFFFF" bgcolor="#FFFFFF" class="register style5"><p>&nbsp;</p> <p>&nbsp;</p></td> <td bordercolor="#FFFFFF" bgcolor="#FFFFFF" class="register style5"><input type="submit" name="submit" value="Submit Comment" onClick="return OnButton1();"/></td> </tr>

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  • CUDA: Memory copy to GPU 1 is slower in multi-GPU

    - by zenna
    My company has a setup of two GTX 295, so a total of 4 GPUs in a server, and we have several servers. We GPU 1 specifically was slow, in comparison to GPU 0, 2 and 3 so I wrote a little speed test to help find the cause of the problem. //#include <stdio.h> //#include <stdlib.h> //#include <cuda_runtime.h> #include <iostream> #include <fstream> #include <sstream> #include <string> #include <cutil.h> __global__ void test_kernel(float *d_data) { int tid = blockDim.x*blockIdx.x + threadIdx.x; for (int i=0;i<10000;++i) { d_data[tid] = float(i*2.2); d_data[tid] += 3.3; } } int main(int argc, char* argv[]) { int deviceCount; cudaGetDeviceCount(&deviceCount); int device = 0; //SELECT GPU HERE cudaSetDevice(device); cudaEvent_t start, stop; unsigned int num_vals = 200000000; float *h_data = new float[num_vals]; for (int i=0;i<num_vals;++i) { h_data[i] = float(i); } float *d_data = NULL; float malloc_timer; cudaEventCreate(&start); cudaEventCreate(&stop); cudaEventRecord( start, 0 ); cudaMemcpy(d_data, h_data, sizeof(float)*num_vals,cudaMemcpyHostToDevice); cudaMalloc((void**)&d_data, sizeof(float)*num_vals); cudaEventRecord( stop, 0 ); cudaEventSynchronize( stop ); cudaEventElapsedTime( &malloc_timer, start, stop ); cudaEventDestroy( start ); cudaEventDestroy( stop ); float mem_timer; cudaEventCreate(&start); cudaEventCreate(&stop); cudaEventRecord( start, 0 ); cudaMemcpy(d_data, h_data, sizeof(float)*num_vals,cudaMemcpyHostToDevice); cudaEventRecord( stop, 0 ); cudaEventSynchronize( stop ); cudaEventElapsedTime( &mem_timer, start, stop ); cudaEventDestroy( start ); cudaEventDestroy( stop ); float kernel_timer; cudaEventCreate(&start); cudaEventCreate(&stop); cudaEventRecord( start, 0 ); test_kernel<<<1000,256>>>(d_data); cudaEventRecord( stop, 0 ); cudaEventSynchronize( stop ); cudaEventElapsedTime( &kernel_timer, start, stop ); cudaEventDestroy( start ); cudaEventDestroy( stop ); printf("cudaMalloc took %f ms\n",malloc_timer); printf("Copy to the GPU took %f ms\n",mem_timer); printf("Test Kernel took %f ms\n",kernel_timer); cudaMemcpy(h_data,d_data, sizeof(float)*num_vals,cudaMemcpyDeviceToHost); delete[] h_data; return 0; } The results are GPU0 cudaMalloc took 0.908640 ms Copy to the GPU took 296.058777 ms Test Kernel took 326.721283 ms GPU1 cudaMalloc took 0.913568 ms Copy to the GPU took[b] 663.182251 ms[/b] Test Kernel took 326.710785 ms GPU2 cudaMalloc took 0.925600 ms Copy to the GPU took 296.915039 ms Test Kernel took 327.127930 ms GPU3 cudaMalloc took 0.920416 ms Copy to the GPU took 296.968384 ms Test Kernel took 327.038696 ms As you can see, the cudaMemcpy to the GPU is well double the amount of time for GPU1. This is consistent between all our servers, it is always GPU1 that is slow. Any ideas why this may be? All servers are running windows XP.

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  • Launching Intent.ACTION_VIEW intent not working on saved image file

    - by Savvas Dalkitsis
    First of all let me say that this questions is slightly connected to another question by me. Actually it was created because of that. I have the following code to write a bitmap downloaded from the net to a file in the sd card: // Get image from url URL u = new URL(url); HttpGet httpRequest = new HttpGet(u.toURI()); HttpClient httpclient = new DefaultHttpClient(); HttpResponse response = (HttpResponse) httpclient.execute(httpRequest); HttpEntity entity = response.getEntity(); BufferedHttpEntity bufHttpEntity = new BufferedHttpEntity(entity); InputStream instream = bufHttpEntity.getContent(); Bitmap bmImg = BitmapFactory.decodeStream(instream); instream.close(); // Write image to a file in sd card File posterFile = new File(Environment.getExternalStorageDirectory().getAbsolutePath()+"/Android/data/com.myapp/files/image.jpg"); posterFile.createNewFile(); BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(posterFile)); Bitmap mutable = Bitmap.createScaledBitmap(bmImg,bmImg.getWidth(),bmImg.getHeight(),true); mutable.compress(Bitmap.CompressFormat.JPEG, 100, out); out.flush(); out.close(); // Launch default viewer for the file Intent intent = new Intent(); intent.setAction(android.content.Intent.ACTION_VIEW); intent.setDataAndType(Uri.parse(posterFile.getAbsolutePath()),"image/*"); ((Activity) getContext()).startActivity(intent); A few notes. I am creating the "mutable" bitmap after seeing someone using it and it seems to work better than without it. And i am using the parse method on the Uri class and not the fromFile because in my code i am calling these in different places and when i am creating the intent i have a string path instead of a file. Now for my problem. The file gets created. The intent launches a dialog asking me to select a viewer. I have 3 viewers installed. The Astro image viewer, the default media gallery (i have a milstone on 2.1 but on the milestone the 2.1 update did not include the 3d gallery so it's the old one) and the 3d gallery from the nexus one (i found the apk in the wild). Now when i launch the 3 viewers the following happen: Astro image viewer: The activity launches but i see nothing but a black screen. Media Gallery: i get an exception dialog shown "The application Media Gallery (process com.motorola.gallery) has stopped unexpectedly. Please try again" with a force close option. 3D gallery: Everything works as it should. When i try to simply open the file using the Astro file manager (browse to it and simply click) i get the same option dialog but this time things are different: Astro image viewer: Everything works as it should. Media Gallery: Everything works as it should. 3D gallery: The activity launches but i see nothing but a black screen. As you can see everything is a complete mess. I have no idea why this happens but it happens like this every single time. It's not a random bug. Am i missing something when i am creating the intent? Or when i am creating the image file? Any ideas?

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  • GAE formpreview

    - by Niklas R
    I'm trying to enable form preview with Google App Engine. Getting the following error message I suspect being mistaken somewhere: ... handler = handler_class() TypeError: __call__() takes at least 2 arguments (1 given) Can you tell what's wrong with my attempt? Here is some of the code. from django.contrib.formtools.preview import FormPreview class AFormPreview(FormPreview): def done(self, request, cleaned_data): # Do something with the cleaned_data, then redirect # to a "success" page. self.response.out.write('Done!') class AForm(djangoforms.ModelForm): text = forms.CharField(widget=forms.Textarea(attrs={'rows':'11','cols':'70','class':'foo'}),label=_("content").capitalize()) def clean(self): cleaned_data = self.clean_data name = cleaned_data.get("name") if not name: raise forms.ValidationError("No name.") # Always return the full collection of cleaned data. return cleaned_data class Meta: model = A fields = ['category','currency','price','title','phonenumber','postaladress','name','text','email'] #change the order ... ('/aformpreview/([^/]*)', AFormPreview(AForm)), UPDATE: Here's a complete app where the preview is not working. Any ideas are most welcome: import cgi from google.appengine.api import users from google.appengine.ext import db from google.appengine.ext import webapp from google.appengine.ext.webapp import template from google.appengine.ext.webapp.util import run_wsgi_app from google.appengine.ext.db import djangoforms class Item(db.Model): name = db.StringProperty() quantity = db.IntegerProperty(default=1) target_price = db.FloatProperty() priority = db.StringProperty(default='Medium',choices=[ 'High', 'Medium', 'Low']) entry_time = db.DateTimeProperty(auto_now_add=True) added_by = db.UserProperty() class ItemForm(djangoforms.ModelForm): class Meta: model = Item exclude = ['added_by'] from django.contrib.formtools.preview import FormPreview class ItemFormPreview(FormPreview): def done(self, request, cleaned_data): # Do something with the cleaned_data, then redirect # to a "success" page. return HttpResponseRedirect('/') class MainPage(webapp.RequestHandler): def get(self): self.response.out.write('<html><body>' '<form method="POST" ' 'action="/">' '<table>') # This generates our shopping list form and writes it in the response self.response.out.write(ItemForm()) self.response.out.write('</table>' '<input type="submit">' '</form></body></html>') def post(self): data = ItemForm(data=self.request.POST) if data.is_valid(): # Save the data, and redirect to the view page entity = data.save(commit=False) entity.added_by = users.get_current_user() entity.put() self.redirect('/items.html') else: # Reprint the form self.response.out.write('<html><body>' '<form method="POST" ' 'action="/">' '<table>') self.response.out.write(data) self.response.out.write('</table>' '<input type="submit">' '</form></body></html>') class ItemPage(webapp.RequestHandler): def get(self): query = db.GqlQuery("SELECT * FROM Item ORDER BY name") for item in query: self.response.out.write('<a href="/edit?id=%d">Edit</a> - ' % item.key().id()) self.response.out.write("%s - Need to buy %d, cost $%0.2f each<br>" % (item.name, item.quantity, item.target_price)) class EditPage(webapp.RequestHandler): def get(self): id = int(self.request.get('id')) item = Item.get(db.Key.from_path('Item', id)) self.response.out.write('<html><body>' '<form method="POST" ' 'action="/edit">' '<table>') self.response.out.write(ItemForm(instance=item)) self.response.out.write('</table>' '<input type="hidden" name="_id" value="%s">' '<input type="submit">' '</form></body></html>' % id) def post(self): id = int(self.request.get('_id')) item = Item.get(db.Key.from_path('Item', id)) data = ItemForm(data=self.request.POST, instance=item) if data.is_valid(): # Save the data, and redirect to the view page entity = data.save(commit=False) entity.added_by = users.get_current_user() entity.put() self.redirect('/items.html') else: # Reprint the form self.response.out.write('<html><body>' '<form method="POST" ' 'action="/edit">' '<table>') self.response.out.write(data) self.response.out.write('</table>' '<input type="hidden" name="_id" value="%s">' '<input type="submit">' '</form></body></html>' % id) def main(): application = webapp.WSGIApplication( [('/', MainPage), ('/edit', EditPage), ('/items.html', ItemPage), ('/itemformpreview', ItemFormPreview(ItemForm)), ], debug=True) run_wsgi_app(application)

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  • What is the reason of "Transaction context in use by another session"

    - by Shrike
    Hi, I'm looking for a description of the root of this error: "Transaction context in use by another session". I get it sometimes in one of my unittests so I can't provider repro code. But I wonder what is "by design" reason for the error. I've found this post: http://blogs.msdn.com/asiatech/archive/2009/08/10/system-transaction-may-fail-in-multiple-thread-environment.aspx and also that: http://msdn.microsoft.com/en-us/library/ff649002.aspx But I can't understand what "Multiple threads sharing the same transaction in a transaction scope will cause the following exception: 'Transaction context in use by another session.' " means. All words are understandable but not the point. I actually can share a system transaction between threads. And there is even special mechanism for this - DependentTransaction class and Transaction.DependentClone method. I'm trying to reproduce a usecase from the first post: 1. Main thread creates DTC transaction, receives DependentTransaction (created using Transaction.Current.DependentClone on the main thread 2. Child thread 1 enlists in this DTC transaction by creating a transaction scope based on the dependent transaction (passed via constructor) 3. Child thread 1 opens a connection 4. Child thread 2 enlists in DTC transaction by creating a transaction scope based on the dependent transaction (passed via constructor) 5. Child thread 2 opens a connection with such code: using System; using System.Threading; using System.Transactions; using System.Data; using System.Data.SqlClient; public class Program { private static string ConnectionString = "Initial Catalog=DB;Data Source=.;User ID=user;PWD=pwd;"; public static void Main() { int MAX = 100; for(int i =0; i< MAX;i++) { using(var ctx = new TransactionScope()) { var tx = Transaction.Current; // make the transaction distributed using (SqlConnection con1 = new SqlConnection(ConnectionString)) using (SqlConnection con2 = new SqlConnection(ConnectionString)) { con1.Open(); con2.Open(); } showSysTranStatus(); DependentTransaction dtx = Transaction.Current.DependentClone(DependentCloneOption.BlockCommitUntilComplete); Thread t1 = new Thread(o => workCallback(dtx)); Thread t2 = new Thread(o => workCallback(dtx)); t1.Start(); t2.Start(); t1.Join(); t2.Join(); ctx.Complete(); } trace("root transaction completes"); } } private static void workCallback(DependentTransaction dtx) { using(var txScope1 = new TransactionScope(dtx)) { using (SqlConnection con2 = new SqlConnection(ConnectionString)) { con2.Open(); trace("connection opened"); showDbTranStatus(con2); } txScope1.Complete(); } trace("dependant tran completes"); } private static void trace(string msg) { Console.WriteLine(Thread.CurrentThread.ManagedThreadId + " : " + msg); } private static void showSysTranStatus() { string msg; if (Transaction.Current != null) msg = Transaction.Current.TransactionInformation.DistributedIdentifier.ToString(); else msg = "no sys tran"; trace( msg ); } private static void showDbTranStatus(SqlConnection con) { var cmd = con.CreateCommand(); cmd.CommandText = "SELECT 1"; var c = cmd.ExecuteScalar(); trace("@@TRANCOUNT = " + c); } } It fails on Complete's call of root TransactionScope. But error is different: Unhandled Exception: System.Transactions.TransactionInDoubtException: The transaction is in doubt. --- pired. The timeout period elapsed prior to completion of the operation or the server is not responding. To sum up: I want to understand what "Transaction context in use by another session" means and how to reproduce it.

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  • asp.net detailsview update method not getting new values

    - by Ali
    Hi all, I am binding a detailsview with objectdatasource which gets the select parameter from the querystring. The detailsview shows the desired record, but when I try to update it, my update method gets the old values for the record (and hence no update). here is my detailsview code: <asp:DetailsView ID="dvUsers" runat="server" Height="50px" Width="125px" AutoGenerateRows="False" DataSourceID="odsUserDetails" onitemupdating="dvUsers_ItemUpdating"> <Fields> <asp:CommandField ShowEditButton="True" /> <asp:BoundField DataField="Username" HeaderText="Username" SortExpression="Username" ReadOnly="true" /> <asp:BoundField DataField="FirstName" HeaderText="First Name" SortExpression="FirstName" /> <asp:BoundField DataField="LastName" HeaderText="Last Name" SortExpression="LastName" /> <asp:BoundField DataField="Email" runat="server" HeaderText="Email" SortExpression="Email" /> <asp:BoundField DataField="IsActive" HeaderText="Is Active" SortExpression="IsActive" /> <asp:BoundField DataField="IsOnline" HeaderText="Is Online" SortExpression="IsOnline" ReadOnly="true" /> <asp:BoundField DataField="LastLoginDate" HeaderText="Last Login" SortExpression="LastLoginDate" ReadOnly="true" /> <asp:BoundField DataField="CreateDate" HeaderText="Member Since" SortExpression="CreateDate" ReadOnly="true" /> <asp:TemplateField HeaderText="Membership Ends" SortExpression="ExpiryDate"> <EditItemTemplate> <asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("ExpiryDate") %>'></asp:TextBox> <cc1:CalendarExtender ID="TextBox1_CalendarExtender" runat="server" Enabled="True" TargetControlID="TextBox1"> </cc1:CalendarExtender> </EditItemTemplate> <InsertItemTemplate> <asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("ExpiryDate") %>'></asp:TextBox> </InsertItemTemplate> <ItemTemplate> <asp:Label ID="Label1" runat="server" Text='<%# Bind("ExpiryDate") %>'></asp:Label> </ItemTemplate> </asp:TemplateField> </Fields> and here is the objectdatasource code: <asp:ObjectDataSource ID="odsUserDetails" runat="server" SelectMethod="GetAllUserDetailsByUserId" TypeName="QMS_BLL.Membership" UpdateMethod="UpdateUserForClient"> <UpdateParameters> <asp:Parameter Name="User_ID" Type="Int32" /> <asp:Parameter Name="firstName" Type="String" /> <asp:Parameter Name="lastName" Type="String" /> <asp:SessionParameter Name="updatedByUser" SessionField="userId" DefaultValue="1" /> <asp:Parameter Name="expiryDate" Type="DateTime" /> <asp:Parameter Name="Email" Type="String" /> <asp:Parameter Name="isActive" Type="String" /> </UpdateParameters> <SelectParameters> <asp:QueryStringParameter DefaultValue="1" Name="User_ID" QueryStringField="User_ID" Type="Int32" /> </SelectParameters> </asp:ObjectDataSource> Is the OnItemUpdating method still required when you have your custom BLL method called on insertevent? (which is being executed fine in my case but updating with the old values) or am I missing something else? Also I tried to provide an OnItemUpdating method and in there I tried to capture the contents of the textboxes (the new values). I got an exception: "Specified argument was out of the range of valid values. Parameter name: index" when I tried to do: TextBox txtFirstName = (TextBox)dvUsers.Rows[1].Cells[1].Controls[0]; Any help will be most appreciated.

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