I'm using ItemsSource on a ListView. I now want to perform a search and filter the items with an SQL query, so I reassign the ItemsSource; but then an exception is thrown:
Items collection must be empty before using ItemsSource.
Alright, but how can I empty the items collection? Items.Clear is not allowed when using ItemsSource..
Okay, code looks like this:
this.Songs.ItemsSource = this.Library.ExecuteQuery<Songs>("SELECT * FROM songs WHERE title LIKE '%" + search + "%' OR artist LIKE '%" + search + "%' OR album LIKE '%" + search + "%'");
This piece of code is executed every time the text in the search box is changed.
Here are the exception details:
System.InvalidOperationException was unhandled
Message="Items collection must be empty before using ItemsSource."
Source="PresentationFramework"
StackTrace:
bei System.Windows.Controls.ItemCollection.SetItemsSource(IEnumerable value)
bei System.Windows.Controls.ItemsControl.OnItemsSourceChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
bei System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
bei System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
bei System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
bei System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, OperationType operationType)
bei System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, OperationType operationType, Boolean isInternal)
bei System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)
bei System.Windows.Controls.ItemsControl.set_ItemsSource(IEnumerable value)
bei Musiclibrary.Window1.Search_TextChanged(Object sender, TextChangedEventArgs e) in C:\Dokumente und Einstellungen\v. Wurstemberger\Eigene Dateien\Visual Studio 2008\Projects\Musiclibrary\Musiclibrary\Window1.xaml.cs:Zeile 132.
bei System.Windows.Controls.TextChangedEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
bei System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
bei System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
bei System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
bei System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
bei System.Windows.UIElement.RaiseEvent(RoutedEventArgs e)
bei System.Windows.Controls.Primitives.TextBoxBase.OnTextChanged(TextChangedEventArgs e)
bei System.Windows.Controls.Primitives.TextBoxBase.OnTextContainerChanged(Object sender, TextContainerChangedEventArgs e)
bei System.Windows.Controls.TextBox.OnTextContainerChanged(Object sender, TextContainerChangedEventArgs e)
bei System.Windows.Documents.TextContainerChangedEventHandler.Invoke(Object sender, TextContainerChangedEventArgs e)
bei System.Windows.Documents.TextContainer.EndChange(Boolean skipEvents)
bei System.Windows.Documents.TextContainer.System.Windows.Documents.ITextContainer.EndChange(Boolean skipEvents)
bei System.Windows.Documents.TextRangeBase.EndChange(ITextRange thisRange, Boolean disableScroll, Boolean skipEvents)
bei System.Windows.Documents.TextRange.System.Windows.Documents.ITextRange.EndChange(Boolean disableScroll, Boolean skipEvents)
bei System.Windows.Documents.TextRange.ChangeBlock.System.IDisposable.Dispose()
bei System.Windows.Documents.TextEditorTyping.DoTextInput(TextEditor This, String textData, Boolean isInsertKeyToggled, Boolean acceptControlCharacters)
bei System.Windows.Documents.TextEditorTyping.TextInputItem.Do()
bei System.Windows.Documents.TextEditorTyping.ScheduleInput(TextEditor This, InputItem item)
bei System.Windows.Documents.TextEditorTyping.OnTextInput(Object sender, TextCompositionEventArgs e)
bei System.Windows.Controls.Primitives.TextBoxBase.OnTextInput(TextCompositionEventArgs e)
bei System.Windows.UIElement.OnTextInputThunk(Object sender, TextCompositionEventArgs e)
bei System.Windows.Input.TextCompositionEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
bei System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
bei System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
bei System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
bei System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
bei System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
bei System.Windows.Input.InputManager.ProcessStagingArea()
bei System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
bei System.Windows.Input.TextCompositionManager.UnsafeCompleteComposition(TextComposition composition)
bei System.Windows.Input.TextCompositionManager.PostProcessInput(Object sender, ProcessInputEventArgs e)
bei System.Windows.Input.InputManager.ProcessStagingArea()
bei System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
bei System.Windows.Input.TextCompositionManager.UnsafeStartComposition(TextComposition composition)
bei System.Windows.Input.TextCompositionManager.PostProcessInput(Object sender, ProcessInputEventArgs e)
bei System.Windows.Input.InputManager.ProcessStagingArea()
bei System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
bei System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
bei System.Windows.Interop.HwndKeyboardInputProvider.ProcessTextInputAction(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
bei System.Windows.Interop.HwndSource.OnPreprocessMessage(Object param)
bei System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Boolean isSingleParameter)
bei System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)
bei System.Windows.Threading.Dispatcher.WrappedInvoke(Delegate callback, Object args, Boolean isSingleParameter, Delegate catchHandler)
bei System.Windows.Threading.Dispatcher.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Boolean isSingleParameter)
bei System.Windows.Threading.Dispatcher.Invoke(DispatcherPriority priority, Delegate method, Object arg)
bei System.Windows.Interop.HwndSource.OnPreprocessMessageThunk(MSG& msg, Boolean& handled)
bei System.Windows.Interop.HwndSource.WeakEventPreprocessMessage.OnPreprocessMessage(MSG& msg, Boolean& handled)
bei System.Windows.Interop.ComponentDispatcherThread.RaiseThreadMessage(MSG& msg)
bei System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
bei System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame)
bei System.Windows.Threading.Dispatcher.Run()
bei System.Windows.Application.RunDispatcher(Object ignore)
bei System.Windows.Application.RunInternal(Window window)
bei System.Windows.Application.Run(Window window)
bei System.Windows.Application.Run()
bei Musiclibrary.App.Main() in C:\Dokumente und Einstellungen\v. Wurstemberger\Eigene Dateien\Visual Studio 2008\Projects\Musiclibrary\Musiclibrary\obj\Debug\App.g.cs:Zeile 0.
bei System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
bei System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
bei Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
bei System.Threading.ThreadHelper.ThreadStart_Context(Object state)
bei System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
bei System.Threading.ThreadHelper.ThreadStart()
InnerException:
This is usually a sign that you're setting the ItemsSource property AND you have manipulated the actual elements within the ItemsControl itself meaning either you've put things in the XAML or have manually added Children to the ItemsControl.
Related
I am using VS2019, windows 10 Framework 4.5 and Sap.Data.Hana.v4.5, Version=2.3.144.0
When I execute this code in page load
HanaConnection conn = new HanaConnection();
got error
Sap.Data.Hana.HanaUnmanagedDll.SearchNativeDlls() +346
Sap.Data.Hana.HanaUnmanagedDll..ctor() +18
Sap.Data.Hana.HanaUnmanagedDll.get_Instance() +103
Sap.Data.Hana.HanaConnection..cctor() +42
[TypeInitializationException: The type initializer for 'Sap.Data.Hana.HanaConnection' threw an exception.]
Sap.Data.Hana.HanaConnection..ctor() +15
Home.Page_Load(Object sender, EventArgs e) in c:\NerveNew\Home.aspx.cs:20
System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +85
System.Web.UI.Control.OnLoad(EventArgs e) +79
System.Web.UI.Control.LoadRecursive() +130
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2852```
I'm coding a Windows 8.1 app that use Hub control.
this project also use mvvmLight.
DataContext Class like this
public class UserInfoViewModel : ViewModelBase
{
private UserInfo userInfo;
public UserInfo User
{
get { return userInfo; }
set
{
if (value == userInfo)
return;
userInfo = value;
RaisePropertyChanged("User");
}
}
public UserInfoViewModel()
{
User = new UserInfo()
{
NikeName = "User",
ProfileImage = "ms-appx:///image/test.jpg"
};
}
}
When I use HubSection.ContentTemplate like this,
it's seems something wrong with the binding
<HubSection.ContentTemplate>
<DataTemplate>
<ContentControl>
<StackPanel
DataContext="{Binding User, Source={StaticResource Locator}}">
</StackPanel>
</ContentControl>
</DataTemplate>
</HubSection.ContentTemplate>
There will have an XAML error
The property "Value" was not found in type "WindowsUIXamlBindingWrapper"
System.ArgumentNullException
Value cannot be null.
Parameter name: key
at System.Collections.Generic.Dictionary`2.Remove(TKey key)
at Microsoft.VisualStudio.DesignTools.Utility.WindowsRuntimeService.WindowsRuntimeContext.UnregisterDynamicType(Type dynamicType)
at Microsoft.VisualStudio.DesignTools.Utility.WindowsRuntimeService.UnregisterDynamicType(Type dynamicType)
at Microsoft.VisualStudio.DesignTools.XamlDesigner.Metadata.MockTypes.MockTypeGenerator.Reset()
at Microsoft.VisualStudio.DesignTools.XamlDesigner.Metadata.XamlProjectMetadata.OnTypesInvalidatedInternal(IList`1 invalidatedAssemblies)
at Microsoft.VisualStudio.DesignTools.Platform.Metadata.TypeResolver.OnAssemblyCollectionChanged(NotifyCollectionChangedEventArgs e)
at Microsoft.VisualStudio.DesignTools.XamlDesigner.Metadata.XamlProjectMetadata.OnAssemblyCollectionChanged(NotifyCollectionChangedEventArgs e)
at Microsoft.VisualStudio.DesignTools.Designer.Project.ProjectAssemblyCollection.FireChangedEvent(NotifyCollectionChangedEventArgs eventArguments)
at Microsoft.VisualStudio.DesignTools.Designer.Project.ProjectAssemblyCollection.AssemblyCollection_EnumerationChanged(Object sender, EnumerationChangedEventArgs`1 e)
at System.EventHandler`1.Invoke(Object sender, TEventArgs e)
at Microsoft.VisualStudio.DesignTools.Utility.Collections.NotifyingCollectionBase`1.EventInvoker(EnumerationChangedEventArgs`1 eventArguments)
at Microsoft.VisualStudio.DesignTools.Utility.Events.SuspendingEventManager`1.ForwardEvents()
at Microsoft.VisualStudio.DesignTools.Utility.Events.Suspender.SuspendDisposer.Dispose(Boolean disposing)
at Microsoft.VisualStudio.DesignTools.Utility.Events.Suspender.SuspendDisposer.Dispose()
at Microsoft.VisualStudio.DesignTools.Designer.Assemblies.AssemblyCollection.AssemblyService_AssembliesUpdated(Object sender, EventArgs`1 e)
at Microsoft.VisualStudio.DesignTools.Designer.Assemblies.AssemblyService.OnAssembliesUpdated(IEnumerable`1 assemblyInformation)
at Microsoft.VisualStudio.DesignTools.Designer.Assemblies.AssemblyService.RefreshDesignerCaches()
at Microsoft.VisualStudio.DesignTools.Utility.WindowsRuntimeService.SetIterationContext(String[] paths)
at Microsoft.VisualStudio.DesignTools.Utility.WindowsRuntimeService.SynchronizeDesignerContext()
at Microsoft.VisualStudio.DesignTools.Utility.WindowsRuntimeService.ProcessShadowCopyResults(IEnumerable`1 results)
at Microsoft.VisualStudio.DesignTools.Designer.Assemblies.AssemblyService.FlushShadowCopyUpdateQueue()
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
at System.Windows.Threading.DispatcherOperation.InvokeImpl()
at System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Windows.Threading.DispatcherOperation.Invoke()
at System.Windows.Threading.Dispatcher.ProcessQueue()
at System.Windows.Threading.Dispatcher.WndProcHook(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
at System.Windows.Threading.Dispatcher.LegacyInvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam)
at MS.Win32.UnsafeNativeMethods.DispatchMessage(MSG& msg)
at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame)
at System.Windows.Application.RunDispatcher(Object ignore)
at System.Windows.Application.RunInternal(Window window)
at System.Windows.Application.Run(Window window)
at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.DesignerProcess.RunApplication()
at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.DesignerProcess.DesignProcessViewProvider.AppContainerDesignerProcessRun(String[] activationContextArgs)
at Microsoft.VisualStudio.DesignTools.DesignerContract.Isolation.DesignerProcess.DesignProcessViewProvider.<>c__DisplayClass3_0.<applicationView_Activated>b__0()
at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
at System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
I have downloaded the ObjectListView.dll and added it as a reference into my VB.NET application. I have added it to my toolbox and added an ObjectListView control to my form. However, when I try and populate it, I get the following error:
Unable to cast object of type 'System.Windows.Forms.ListViewItem' to
type 'BrightIdeasSoftware.OLVListItem'
My code snippet looks like so:
lsvOverdueCalls.Items.Add(tempDT.Rows(0)("id").ToString)
lsvOverdueCalls.Items(0).SubItems.Add(tempDT.Rows(0)("summary").ToString)
lsvOverdueCalls.Items(0).SubItems.Add(tempDT.Rows(0)("first_name").ToString)
Unsure if I'm doing something wrong. My applicaton is compiled under the full version of dot.net 4.5, not the client version as advised.
Any help appreciated.
Update
I noticed I get the following error in my debugger window but ONLY when moving the mouse over a ListViewItem:
A first chance exception of type 'System.InvalidCastException'
occurred in ObjectListView.dll System.Transactions Critical: 0 :
http://msdn.microsoft.com/TraceCodes/System/ActivityTracing/2004/07/Reliability/Exception/UnhandledUnhandled
exceptionDrakeMon2.0.vshost.exeSystem.InvalidCastException,
mscorlib, Version=4.0.0.0, Culture=neutral,
PublicKeyToken=b77a5c561934e089Unable to cast
object of type 'System.Windows.Forms.ListViewItem' to type
'BrightIdeasSoftware.OLVListItem'. at
BrightIdeasSoftware.ObjectListView.GetItem(Int32 index) at
BrightIdeasSoftware.ObjectListView.LowLevelHitTest(Int32 x, Int32 y)
at BrightIdeasSoftware.ObjectListView.OlvHitTest(Int32 x, Int32 y)
at BrightIdeasSoftware.ObjectListView.BuildCellEvent(CellEventArgs
args, Point location) at
BrightIdeasSoftware.ObjectListView.OnMouseMove(MouseEventArgs e) at
System.Windows.Forms.Control.WmMouseMove(Message& m) at
System.Windows.Forms.Control.WndProc(Message& m) at
System.Windows.Forms.ListView.WndProc(Message& m) at
BrightIdeasSoftware.ObjectListView.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(IntPtr
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.Form.ShowDialog(IWin32Window owner) at
DrakeMon2.frmNewDashboard.ToolStripMenuItem2_Click(Object sender,
EventArgs e) in C:\Dropbox\VS Projects\DrakeMon v2.0\DrakeMon
v2.0\frmNewDashboard.vb:line 986 at
System.Windows.Forms.ToolStripMenuItem.OnClick(EventArgs e) at
System.Windows.Forms.ToolStripItem.HandleClick(EventArgs e) at
System.Windows.Forms.ToolStripItem.HandleMouseUp(MouseEventArgs e)
at System.Windows.Forms.ToolStrip.OnMouseUp(MouseEventArgs mea) at
System.Windows.Forms.ToolStripDropDown.OnMouseUp(MouseEventArgs mea)
at System.Windows.Forms.Control.WmMouseUp(Message& m,
MouseButtons button, Int32 clicks) at
System.Windows.Forms.Control.WndProc(Message& m) at
System.Windows.Forms.ToolStrip.WndProc(Message& m) at
System.Windows.Forms.ToolStripDropDown.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(IntPtr
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
Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.OnRun()
at
Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.DoApplicationModel()
at
Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.Run(String[]
commandLine) at DrakeMon2.My.MyApplication.Main(String[] Args) in
17d14f5c-a337-4978-8281-53493378c1071.vb:line 81 at
System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[]
args) at
System.Runtime.Hosting.ApplicationActivator.CreateInstance(ActivationContext
activationContext, String[] activationCustomData) at
Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssemblyDebugInZone()
at System.Threading.ExecutionContext.RunInternal(ExecutionContext
executionContext, ContextCallback callback, Object state, Boolean
preserveSyncCtx) at
System.Threading.ExecutionContext.Run(ExecutionContext
executionContext, ContextCallback callback, Object state, Boolean
preserveSyncCtx) at
System.Threading.ExecutionContext.Run(ExecutionContext
executionContext, ContextCallback callback, Object state) at
System.Threading.ThreadHelper.ThreadStart()System.InvalidCastException:
Unable to cast object of type 'System.Windows.Forms.ListViewItem' to
type 'BrightIdeasSoftware.OLVListItem'. at
BrightIdeasSoftware.ObjectListView.GetItem(Int32 index) at
BrightIdeasSoftware.ObjectListView.LowLevelHitTest(Int32 x, Int32 y)
at BrightIdeasSoftware.ObjectListView.OlvHitTest(Int32 x, Int32 y)
at BrightIdeasSoftware.ObjectListView.BuildCellEvent(CellEventArgs
args, Point location) at
BrightIdeasSoftware.ObjectListView.OnMouseMove(MouseEventArgs e) at
System.Windows.Forms.Control.WmMouseMove(Message& m) at
System.Windows.Forms.Control.WndProc(Message& m) at
System.Windows.Forms.ListView.WndProc(Message& m) at
BrightIdeasSoftware.ObjectListView.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(IntPtr
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.Form.ShowDialog(IWin32Window owner) at
DrakeMon2.frmNewDashboard.ToolStripMenuItem2_Click(Object sender,
EventArgs e) in C:\Dropbox\VS Projects\DrakeMon v2.0\DrakeMon
v2.0\frmNewDashboard.vb:line 986 at
System.Windows.Forms.ToolStripMenuItem.OnClick(EventArgs e) at
System.Windows.Forms.ToolStripItem.HandleClick(EventArgs e) at
System.Windows.Forms.ToolStripItem.HandleMouseUp(MouseEventArgs e)
at System.Windows.Forms.ToolStrip.OnMouseUp(MouseEventArgs mea) at
System.Windows.Forms.ToolStripDropDown.OnMouseUp(MouseEventArgs mea)
at System.Windows.Forms.Control.WmMouseUp(Message& m,
MouseButtons button, Int32 clicks) at
System.Windows.Forms.Control.WndProc(Message& m) at
System.Windows.Forms.ToolStrip.WndProc(Message& m) at
System.Windows.Forms.ToolStripDropDown.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(IntPtr
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
Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.OnRun()
at
Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.DoApplicationModel()
at
Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.Run(String[]
commandLine) at DrakeMon2.My.MyApplication.Main(String[] Args) in
17d14f5c-a337-4978-8281-53493378c1071.vb:line 81 at
System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[]
args) at
System.Runtime.Hosting.ApplicationActivator.CreateInstance(ActivationContext
activationContext, String[] activationCustomData) at
Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssemblyDebugInZone()
at System.Threading.ExecutionContext.RunInternal(ExecutionContext
executionContext, ContextCallback callback, Object state, Boolean
preserveSyncCtx) at
System.Threading.ExecutionContext.Run(ExecutionContext
executionContext, ContextCallback callback, Object state, Boolean
preserveSyncCtx) at
System.Threading.ExecutionContext.Run(ExecutionContext
executionContext, ContextCallback callback, Object state) at
System.Threading.ThreadHelper.ThreadStart()
I'm assuming a threading issue, but I'm unsure why this control throws an error and a normal listview or even the BetterListView control doesn't. My form only contains this control and nothing else. And...like mentioned, it ONLY occurs if I try and move the mouse over a ListViewItem.
Thanks
You cannot do Add() on the ObjectListView like you do on a normal ListView. Instead, you need to call the SetObjects method on the ObjectListView instance, and pass it a list of items to add.
So in your case, create a List<Call> of the items to add (assuming your model is a Call class with id, summary and first_name fields, and then pass it on to the lsvOverdueCalls.SetObjects() like so.
var lstCalls = new List<Call>()
{
new Call() {
Id = tempDT.Rows(0)("id").ToString,
Summary = tempDT.Rows(0)("summary").ToString,
First_Name = tempDT.Rows(0)("first_name").ToString
}
};
lsvOverdueCalls.SetObjects(lstCalls);
And here's how your Call model should look like.
public class Call
{
public string Id { get; set; }
public string Summary { get; set; }
public string First_Name { get; set; }
}
in my following application, i generate a List of the class 'JobManager'.
List<JobManager>
The access to the database and filling my list is working perfect. It seems there is a problem for returning such list to my client.
In detail,my code looks like this
IService Class
OperationContract(Name = "ReadJobQueue")]
[FaultContract(typeof(FaultException))]
List<JobManager> AccessManager(List<string> status,string process, string dtFrom, string dtTo);
Service : IService
public List<JobManager> AccessManager(List<string> status, string process, string dtFrom, string dtTo)
{
//return 'new List<JobManager>()' does work, without any data being filled.
return new JobBuilder(status, process, dtFrom, dtTo);
}
[DataContract]
public class JobManager
{
List<JobManager> _jobManagerchildren = new List<JobManager>();
[DataMember(IsRequired = true, Order = 0)]
public string Description { get; set; }
[DataMember]
public List<JobManager> JobManagerChildren
{
get { return _jobManagerchildren; }
internal set { _jobManagerchildren = value; }
}
}
internal class JobBuilder : List<JobManager>
{
public JobBuilder(List<string> status, string process, string dtFrom, string dtTo)
: base()
{
DataTable dt = new Database().AccessJobQueue(status, process, dtFrom, dtTo);
foreach (DataRow row in dt.Rows)
{
Add(new JobManager { Description = row[1].ToString(), JobManagerChildren = JobDetail(row[0].ToString()) });
}
}
...
}
Have i missed something for my JobManager class?
edit error code / exception
System.Net.Sockets.SocketException:
An existing connection was been closed by the remotehost
bei System.Net.Sockets.Socket.Receive(Byte[] buffer, Int32 offset, Int32 size
, SocketFlags socketFlags)
bei System.ServiceModel.Channels.SocketConnection.ReadCore(Byte[] buffer, Int
32 offset, Int32 size, TimeSpan timeout, Boolean closing)
--- Ende der internen Ausnahmestapelüberwachung ---
bei System.ServiceModel.Channels.SocketConnection.ReadCore(Byte[] buffer, Int
32 offset, Int32 size, TimeSpan timeout, Boolean closing)
bei System.ServiceModel.Channels.SocketConnection.Read(Byte[] buffer, Int32 o
ffset, Int32 size, TimeSpan timeout)
bei System.ServiceModel.Channels.DelegatingConnection.Read(Byte[] buffer, Int
32 offset, Int32 size, TimeSpan timeout)
bei System.ServiceModel.Channels.ConnectionStream.Read(Byte[] buffer, Int32 o
ffset, Int32 count)
bei System.Net.FixedSizeReader.ReadPacket(Byte[] buffer, Int32 offset, Int32
count)
bei System.Net.Security.NegotiateStream.StartFrameHeader(Byte[] buffer, Int32
offset, Int32 count, AsyncProtocolRequest asyncRequest)
bei System.Net.Security.NegotiateStream.ProcessRead(Byte[] buffer, Int32 offs
et, Int32 count, AsyncProtocolRequest asyncRequest)
--- Ende der internen Ausnahmestapelüberwachung ---
bei System.Net.Security.NegotiateStream.ProcessRead(Byte[] buffer, Int32 offs
et, Int32 count, AsyncProtocolRequest asyncRequest)
bei System.Net.Security.NegotiateStream.Read(Byte[] buffer, Int32 offset, Int
32 count)
bei System.ServiceModel.Channels.StreamConnection.Read(Byte[] buffer, Int32 o
ffset, Int32 size, TimeSpan timeout)
--- Ende der internen Ausnahmestapelüberwachung ---
Server stack trace:
bei System.ServiceModel.Channels.StreamConnection.Read(Byte[] buffer, Int32 o
ffset, Int32 size, TimeSpan timeout)
bei System.ServiceModel.Channels.SessionConnectionReader.Receive(TimeSpan tim
eout)
bei System.ServiceModel.Channels.SynchronizedMessageSource.Receive(TimeSpan t
imeout)
bei System.ServiceModel.Channels.FramingDuplexSessionChannel.Receive(TimeSpan
timeout)
bei System.ServiceModel.Channels.FramingDuplexSessionChannel.TryReceive(TimeS
pan timeout, Message& message)
bei System.ServiceModel.Dispatcher.DuplexChannelBinder.Request(Message messag
e, TimeSpan timeout)
bei System.ServiceModel.Channels.ServiceChannel.Call(String action, Boolean o
neway, ProxyOperationRuntime operation, Object[] ins, Object[] outs, TimeSpan ti
meout)
bei System.ServiceModel.Channels.ServiceChannelProxy.InvokeService(IMethodCal
lMessage methodCall, ProxyOperationRuntime operation)
bei System.ServiceModel.Channels.ServiceChannelProxy.Invoke(IMessage message)
Exception rethrown at [0]:
bei System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage re
qMsg, IMessage retMsg)
bei System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgD
ata, Int32 type)
bei WcfSys.Shared.IService.AccessManager(List`1 status, String process, S
tring dtFrom, String dtTo)
bei WcfSys.Server.Program.Main() in WcfSys.Ser
ver\Program.cs:Zeile 66.
Actually, what you're sending back to the client is a List<JobManager>, but actually it's a derived class. So there are two ways of fixing this:
Copy all entries from JobBuilder to a new List<JobManager> and return that new list
Make JobBuilder a DataContract, too.
As - by OOP principles - it is know that the object you're returning is a JobBuilder, the runtime tries to serialize the JobBuilder instance. This, however, is not a know type for WCF communication.
I have a clustered web app running in asp.net + nhibernate that relies in MemcacheD as its second level cache provider. Everything ran fine for months and today some queries started to give a type mismatch error when loading entities from cache L2. Restarting the cache appeared to solve the problem, but a few minutes later the error returned. Right now the cache is disabled and everything is working.
Any clue is appreciated.
Stacktrace:
System.Web.HttpUnhandledException: Exception of type 'System.Web.HttpUnhandledException' was thrown.
---> System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation.
---> NHibernate.TypeMismatchException: Provided id of the wrong type. Expected: System.Int32, got System.Int64
at NHibernate.Event.Default.DefaultLoadEventListener.OnLoad(LoadEvent event, LoadType loadType)
at NHibernate.Impl.SessionImpl.FireLoad(LoadEvent event, LoadType loadType)
at NHibernate.Impl.SessionImpl.InternalLoad(String entityName, Object id, Boolean eager, Boolean isNullable)
at NHibernate.Type.EntityType.ResolveIdentifier(Object id, ISessionImplementor session)
at NHibernate.Type.TypeFactory.Assemble(Object[] row, ICacheAssembler[] types, ISessionImplementor session, Object owner)
at NHibernate.Cache.Entry.CacheEntry.Assemble(Object[] values, Object result, Object id, IEntityPersister persister, IInterceptor interceptor, ISessionImplementor session)
at NHibernate.Event.Default.DefaultLoadEventListener.AssembleCacheEntry(CacheEntry entry, Object id, IEntityPersister persister, LoadEvent event)
at NHibernate.Event.Default.DefaultLoadEventListener.LoadFromSecondLevelCache(LoadEvent event, IEntityPersister persister, LoadType options)
at NHibernate.Event.Default.DefaultLoadEventListener.DoLoad(LoadEvent event, IEntityPersister persister, EntityKey keyToLoad, LoadType options)
at NHibernate.Event.Default.DefaultLoadEventListener.Load(LoadEvent event, IEntityPersister persister, EntityKey keyToLoad, LoadType options)
at NHibernate.Event.Default.DefaultLoadEventListener.OnLoad(LoadEvent event, LoadType loadType)
at NHibernate.Impl.SessionImpl.FireLoad(LoadEvent event, LoadType loadType)
at NHibernate.Impl.SessionImpl.InternalLoad(String entityName, Object id, Boolean eager, Boolean isNullable)
at NHibernate.Type.EntityType.ResolveIdentifier(Object id, ISessionImplementor session)
at NHibernate.Engine.TwoPhaseLoad.InitializeEntity(Object entity, Boolean readOnly, ISessionImplementor session, PreLoadEvent preLoadEvent, PostLoadEvent postLoadEvent)
at NHibernate.Loader.Loader.InitializeEntitiesAndCollections(IList hydratedObjects, Object resultSetId, ISessionImplementor session, Boolean readOnly)
at NHibernate.Loader.Loader.DoQuery(ISessionImplementor session, QueryParameters queryParameters, Boolean returnProxies)
at NHibernate.Loader.Loader.DoQueryAndInitializeNonLazyCollections(ISessionImplementor session, QueryParameters queryParameters, Boolean returnProxies)
at NHibernate.Loader.Loader.DoList(ISessionImplementor session, QueryParameters queryParameters)
at NHibernate.Loader.Loader.List(ISessionImplementor session, QueryParameters queryParameters, ISet`1 querySpaces, IType[] resultTypes)
at NHibernate.Impl.SessionImpl.ListCustomQuery(ICustomQuery customQuery, QueryParameters queryParameters, IList results)
at NHibernate.Impl.SessionImpl.List(NativeSQLQuerySpecification spec, QueryParameters queryParameters, IList results)
at NHibernate.Impl.SessionImpl.List[T](NativeSQLQuerySpecification spec, QueryParameters queryParameters)
at NHibernate.Impl.SqlQueryImpl.List[T]() at Punchclock.DAL.NHibernate.UserDAO.GetUserList(QueryUser pQueryUser, Nullable`1 pTop)
at Punchclock.Biz.UserBiz.GetUserList(QueryUser queryUser, Nullable`1 pTop) at Punchclock.Biz.UserBiz.GetUserList(QueryUser queryUser, Int32 pTop)
at Punchclock.Net.Service.UserService.GetUserList(QueryUser queryUser, Int32 pTop)
--- End of inner exception stack trace ---
at System.RuntimeMethodHandle._InvokeMethodFast(Object target, Object[] arguments, SignatureStruct& sig, MethodAttributes methodAttributes, RuntimeTypeHandle typeOwner)
at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture, Boolean skipVisibilityChecks)
at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
at System.Reflection.MethodBase.Invoke(Object obj, Object[] parameters) at Punchclock.Net.Service.ServiceProxy`1.Invoke(IMessage msg)
at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)
at Punchclock.Core.Service.IUserService.GetUserList(QueryUser queryUser, Int32 pTop)
at Punchclock.Net.Delegate.UserDelegate.GetUserList(QueryUser queryUser, Int32 pTop)
at Punchclock.Client.Controller.UcUserQueryController.GetUserList(QueryUser queryUser, Int32 pTop)
at Punchclock.Client.Web.Record.UserControls.UcUserQuery.MakeQuery(Int32 maxResults)
at Punchclock.Client.Web.UserControls.UcQueryBase.OnQueryButtonClick(Object o, QueryEventArgs e)
at Punchclock.Client.Web.Record.UserControls.UcUserQuery.btnQuery_Click(Object sender, EventArgs e)
at System.Web.UI.WebControls.Button.OnClick(EventArgs e) at System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument)
at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
--- End of inner exception stack trace ---
at System.Web.UI.Page.HandleError(Exception e)
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
at System.Web.UI.Page.ProcessRequest() at System.Web.UI.Page.ProcessRequest(HttpContext context)
at ASP.forms_query_aspx.ProcessRequest(HttpContext context)
in c:\WINDOWS\Microsoft.NET\Framework64\v2.0.50727\Temporary ASP.NET Files\punchclock_rc1\c4ca2e53\49a32ae2\App_Web_hfudjjsj.2.cs:line 0
at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)