WPF C＃文本框IDataErrorInfo错误 - 当IsEnabled = true时多次单击会删除文本

Question

我创建了一个绑定到实现IDataErrorInfo的实体的wpf文本框。当文本框无效时（由于它没有通过IDataErrorInfo验证而在其周围显示红色框）并且文本框的IsEnabled属性设置为false，我可以多次单击文本框并删除文本框内的文本（字符串） .Empty传递给实体）。

这里发生了什么？这是预期的行为吗？

编辑：我删除了isEnabled并添加了isreadonly和focusable。我意识到如果我没有点击文本框，它会在验证失败时删除。

编辑：然后，我删除了焦点并再次尝试。这一次，直到我点击表示验证的红线上的任何内容都没有删除。

编辑：我的文本框位于DataGridTemplateColumn内DataGridTemplateColumn.CellTemplate内部的DataTemplate内。

callstack如下：

  

MyCode.DLL！MyCode.Models.Entity.PropertyName.set（string value）第66行C＃       [原产于管理过渡]
      PresentationFramework.dll！MS.Internal.Data.PropertyPathWorker.SetValue（对象项，对象值）未知       PresentationFramework.dll！MS.Internal.Data.ClrBindingWorker.UpdateValue（对象值）未知       PresentationFramework.dll！System.Windows.Data.BindingExpression.UpdateSource（object value）Unknown       PresentationFramework.dll！System.Windows.Data.BindingExpressionBase.UpdateValue（）未知       PresentationFramework.dll！System.Windows.Data.BindingExpression.UpdateOverride（）未知       PresentationFramework.dll！System.Windows.Data.BindingExpressionBase.Update（）未知       PresentationFramework.dll！System.Windows.Data.BindingExpressionBase.ProcessDirty（）未知       PresentationFramework.dll！System.Windows.Data.BindingExpressionBase.Dirty（）未知       PresentationFramework.dll！System.Windows.Data.BindingExpressionBase.SetValue（System.Windows.DependencyObject d，System.Windows.DependencyProperty dp，object value）Unknown       WindowsBase.dll！System.Windows.DependencyObject.SetValueCommon（System.Windows.DependencyProperty dp，object value，System.Windows.PropertyMetadata metadata，bool coerceWithDeferredReference，bool coerceWithCurrentValue，System.Windows.OperationType operationType，bool isInternal）Unknown       WindowsBase.dll！System.Windows.DependencyObject.SetValue（System.Windows.DependencyProperty dp，object value）Unknown       PresentationFramework.dll！System.Windows.Data.BindingExpression.GetInitialValue（System.Windows.DependencyObject target，out System.Windows.Controls.ValidationError error）Unknown       PresentationFramework.dll！System.Windows.Data.BindingExpression.Activate（object item）Unknown       PresentationFramework.dll！System.Windows.Data.BindingExpression.AttachToContext（System.Windows.Data.BindingExpression.AttachAttempt attempt）Unknown       PresentationFramework.dll！System.Windows.Data.BindingExpression.MS.Internal.Data.IDataBindEngineClient.AttachToContext（bool lastChance）Unknown       PresentationFramework.dll！MS.Internal.Data.DataBindEngine.Task.Run（bool lastChance）未知       PresentationFramework.dll！MS.Internal.Data.DataBindEngine.Run（object arg）未知       PresentationFramework.dll！MS.Internal.Data.DataBindEngine.OnLayoutUpdated（object sender，System.EventArgs e）未知       PresentationCore.dll！System.Windows.ContextLayoutManager.fireLayoutUpdateEvent（）未知       PresentationCore.dll！System.Windows.ContextLayoutManager.UpdateLayout（）未知       PresentationCore.dll！System.Windows.UIElement.UpdateLayout（）未知       PresentationFramework.dll！System.Windows.Controls.DataGridCell.BeginEdit（System.Windows.RoutedEventArgs e）未知       PresentationFramework.dll！System.Windows.Controls.DataGrid.OnExecutedBeginEdit（System.Windows.Input.ExecutedRoutedEventArgs e）未知       PresentationFramework.dll！System.Windows.Controls.DataGrid.OnExecutedBeginEdit（object sender，System.Windows.Input.ExecutedRoutedEventArgs e）Unknown       PresentationCore.dll！System.Windows.Input.CommandBinding.OnExecuted（object sender，System.Windows.Input.ExecutedRoutedEventArgs e）Unknown       PresentationCore.dll！System.Windows.Input.CommandManager.ExecuteCommandBinding（object sender，System.Windows.Input.ExecutedRoutedEventArgs e，System.Windows.Input.CommandBinding commandBinding）Unknown       PresentationCore.dll！System.Windows.Input.CommandManager.FindCommandBinding（object sender，System.Windows.RoutedEventArgs e，System.Windows.Input.ICommand command，bool execute）Unknown       PresentationCore.dll！System.Windows.Input.CommandManager.OnExecuted（object sender，System.Windows.Input.ExecutedRoutedEventArgs e）Unknown       PresentationCore.dll！System.Windows.UIElement.OnExecutedThunk（object sender，System.Windows.Input.ExecutedRoutedEventArgs e）Unknown       PresentationCore.dll！System.Windows.Input.ExecutedRoutedEventArgs.InvokeEventHandler（System.Delegate genericHandler，object target）Unknown       PresentationCore.dll！System.Windows.RoutedEventArgs.InvokeHandler（System.Delegate handler，object target）Unknown       PresentationCore.dll！System.Windows.RoutedEventHandlerInfo.InvokeHandler（对象目标，System.Windows.RoutedEventArgs routedEventArgs）未知       PresentationCore.dll！System.Windows.EventRoute.InvokeHandlersImpl（对象源，System.Windows.RoutedEventArgs args，bool reRaised）未知       PresentationCore.dll！System.Windows.UIElement.RaiseEventImpl（System.Windows.DependencyObject sender，System.Windows.RoutedEventArgs args）Unknown       PresentationCore.dll！System.Windows.UIElement.RaiseEvent（System.Windows.RoutedEventArgs args，bool trusted）Unknown       PresentationCore.dll！System.Windows.Input.RoutedCommand.ExecuteImpl（object parameter，System.Windows.IInputElement target，bool userInitiated）Unknown       PresentationCore.dll！System.Windows.Input.RoutedCommand.Execute（object parameter，System.Windows.IInputElement target）Unknown       PresentationFramework.dll！System.Windows.Controls.DataGrid.BeginEdit（System.Windows.RoutedEventArgs editingEventArgs）Unknown       PresentationFramework.dll！System.Windows.Controls.DataGridCell.OnAnyMouseLeftButtonDown（System.Windows.Input.MouseButtonEventArgs e）Unknown       PresentationFramework.dll！System.Windows.Controls.DataGridCell.OnAnyMouseLeftButtonDownThunk（object sender，System.Windows.Input.MouseButtonEventArgs e）Unknown       PresentationCore.dll！System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler（System.Delegate genericHandler，object genericTarget）Unknown       PresentationCore.dll！System.Windows.RoutedEventArgs.InvokeHandler（System.Delegate handler，object target）Unknown       PresentationCore.dll！System.Windows.RoutedEventHandlerInfo.InvokeHandler（对象目标，System.Windows.RoutedEventArgs routedEventArgs）未知       PresentationCore.dll！System.Windows.EventRoute.InvokeHandlersImpl（对象源，System.Windows.RoutedEventArgs args，bool reRaised）未知       PresentationCore.dll！System.Windows.UIElement.ReRaiseEventAs（System.Windows.DependencyObject sender，System.Windows.RoutedEventArgs args，System.Windows.RoutedEvent newEvent）Unknown       PresentationCore.dll！System.Windows.UIElement.OnMouseDownThunk（object sender，System.Windows.Input.MouseButtonEventArgs e）Unknown       PresentationCore.dll！System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler（System.Delegate genericHandler，object genericTarget）Unknown       PresentationCore.dll！System.Windows.RoutedEventArgs.InvokeHandler（System.Delegate handler，object target）Unknown       PresentationCore.dll！System.Windows.RoutedEventHandlerInfo.InvokeHandler（对象目标，System.Windows.RoutedEventArgs routedEventArgs）未知       PresentationCore.dll！System.Windows.EventRoute.InvokeHandlersImpl（对象源，System.Windows.RoutedEventArgs args，bool reRaised）未知       PresentationCore.dll！System.Windows.UIElement.RaiseEventImpl（System.Windows.DependencyObject sender，System.Windows.RoutedEventArgs args）Unknown       PresentationCore.dll！System.Windows.UIElement.RaiseTrustedEvent（System.Windows.RoutedEventArgs args）Unknown       PresentationCore.dll！System.Windows.UIElement.RaiseEvent（System.Windows.RoutedEventArgs args，bool trusted）Unknown       PresentationCore.dll！System.Windows.Input.InputManager.ProcessStagingArea（）未知       PresentationCore.dll！System.Windows.Input.InputManager.ProcessInput（System.Windows.Input.InputEventArgs input）Unknown       PresentationCore.dll！System.Windows.Input.InputProviderSite.ReportInput（System.Windows.Input.InputReport inputReport）Unknown       PresentationCore.dll！System.Windows.Interop.HwndMouseInputProvider.ReportInput（System.IntPtr hwnd，System.Windows.Input.InputMode mode，int timestamp，System.Windows.Input.RawMouseActions actions，int x，int y，int wheel）Unknown       PresentationCore.dll！System.Windows.Interop.HwndMouseInputProvider.FilterMessage（System.IntPtr hwnd，MS.Internal.Interop.WindowMessage msg，System.IntPtr wParam，System.IntPtr lParam，ref bool handling）Unknown       PresentationCore.dll！System.Windows.Interop.HwndSource.InputFilterMessage（System.IntPtr hwnd，int msg，System.IntPtr wParam，System.IntPtr lParam，ref bool handling）Unknown       WindowsBase.dll！MS.Win32.HwndWrapper.WndProc（System.IntPtr hwnd，int msg，System.IntPtr wParam，System.IntPtr lParam，ref bool handling）Unknown       WindowsBase.dll！MS.Win32.HwndSubclass.DispatcherCallbackOperation（object o）未知       WindowsBase.dll！System.Windows.Threading.ExceptionWrapper.InternalRealCall（System.Delegate callback，object args，int numArgs）Unknown       WindowsBase.dll！System.Windows.Threading.ExceptionWrapper.TryCatchWhen（对象源，System.Delegate回调，对象args，int numArgs，System.Delegate catchHandler）未知       WindowsBase.dll！System.Windows.Threading.Dispatcher.LegacyInvokeImpl（System.Windows.Threading.DispatcherPriority priority，System.TimeSpan timeout，System.Delegate method，object args，int numArgs）Unknown       WindowsBase.dll！MS.Win32.HwndSubclass.SubclassWndProc（System.IntPtr hwnd，int msg，System.IntPtr wParam，System.IntPtr lParam）未知       [AppDomain Transition]

Answer 1

我从未弄明白为什么，但我发现使用private int count = 1; Runnable runnable = null; private void showProgressDialog() { progressDialog = new ProgressDialog(this, getProgressDailogStyle()); progressDialog.setMessage("Processing ..."); progressDialog.show(); progressDialog.setCancelable(false); final Handler handler = new Handler(); runnable = new Runnable() { public void run() { Log.i("message",""+counter); if (counter == 5) { handler.removeCallbacks(runnable); progressDialog.dismiss(); // mInterstitialAd.show(); }else { progressDialog.setMessage("your message"); handler.postDelayed(runnable, 2000); counter++; } } }; handler.post(runnable); } 和CellTemplate解决了我的问题。

对于那些关注我的帖子然后逃跑的人，如果你不能理解复杂性，我建议你在将来忽略这个问题。