我有DataGrid显示多个行和列的数据，每个都绑定到自己的Property。 DataGrid不在TabControl上，但只要其生成的窗口关闭并重新打开，我就会收到错误消息：'DeferRefresh' is not allowed during an AddNew or EditItem transaction. 仅在有验证时一个或多个DataGrid个单元格的问题。
例如：绑定到DataGrid＆＃39; cell的属性为double，用户输入＆＃34;您好＆＃ 34;当然WPF's周围会显示cell自动红色边框。现在，如果用户要关闭窗口，并重新打开它，则会发生错误。
我知道为什么错误被抛出，因为cell没有离开＆＃34;编辑模式＆＃34;。
如何解决此错误？
其他说明：
DataGrid TabControl上的Cell有关。（我的不是）。double需要double或者只接受PreviewTextInput，但问题是没有好处限制用户可以插入的小数点数（＆＃34;。＆＃34;）的方法。我通过System.InvalidOperationException was unhandled
Message='DeferRefresh' is not allowed during an AddNew or EditItem transaction.
Source=PresentationFramework
StackTrace:
at System.Windows.Data.CollectionView.DeferRefresh()
at System.Windows.Controls.ItemCollection.SetCollectionView(CollectionView view)
at System.Windows.Controls.ItemsControl.OnItemsSourceChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
at System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
at System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
at System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
at System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
at System.Windows.Data.BindingExpressionBase.Invalidate(Boolean isASubPropertyChange)
at System.Windows.Data.BindingExpression.TransferValue(Object newValue, Boolean isASubPropertyChange)
at System.Windows.Data.BindingExpression.Activate(Object item)
at System.Windows.Data.BindingExpression.AttachToContext(AttachAttempt attempt)
at System.Windows.Data.BindingExpression.MS.Internal.Data.IDataBindEngineClient.AttachToContext(Boolean lastChance)
at MS.Internal.Data.DataBindEngine.Task.Run(Boolean lastChance)
at MS.Internal.Data.DataBindEngine.Run(Object arg)
at MS.Internal.Data.DataBindEngine.OnLayoutUpdated(Object sender, EventArgs e)
at System.Windows.ContextLayoutManager.fireLayoutUpdateEvent()
at System.Windows.ContextLayoutManager.UpdateLayout()
at System.Windows.Interop.HwndSource.SetLayoutSize()
at System.Windows.Interop.HwndSource.set_RootVisualInternal(Visual value)
at System.Windows.Window.SetRootVisualAndUpdateSTC()
at System.Windows.Window.SetupInitialState(Double requestedTop, Double requestedLeft, Double requestedWidth, Double requestedHeight)
at System.Windows.Window.CreateSourceWindow(Boolean duringShow)
at System.Windows.Window.ShowHelper(Object booleanBox)
at REACT.ViewModel.ReceiverListViewModel.ShowWindow(String name) in C:\Users\jcarroll42\Documents\Sandbox\REACT\SW\Source\ViewModel\ReceiverListViewModel.cs:line 238
at REACT.Commands.ShowWindowCommand.Execute(Object parameter) in C:\Users\jcarroll42\Documents\Sandbox\REACT\SW\Source\Commands.cs:line 137
at MS.Internal.Commands.CommandHelpers.CriticalExecuteCommandSource(ICommandSource commandSource, Boolean userInitiated)
at System.Windows.Controls.Button.OnClick()
at System.Windows.Controls.Primitives.ButtonBase.OnMouseLeftButtonUp(MouseButtonEventArgs e)
at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
at System.Windows.UIElement.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent)
at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
at System.Windows.UIElement.RaiseTrustedEvent(RoutedEventArgs args)
at System.Windows.Input.InputManager.ProcessStagingArea()
at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
at System.Windows.Interop.HwndSource.InputFilterMessage(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 MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(Object source, Delegate method, Object args, Int32 numArgs, Delegate catchHandler)
at System.Windows.Threading.Dispatcher.WrappedInvoke(Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)
at System.Windows.Threading.Dispatcher.InvokeImpl(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.Application.RunInternal(Window window)
at System.Windows.Application.Run()
at REACT.App.Main() in C:\Users\jcarroll42\Documents\Sandbox\REACT\SW\Source\obj\x86\Debug\App.g.cs:line 0
at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
InnerException:
控制用户输入，只允许0-9和＆＃34;。＆＃34;。 例外明细（如果这有帮助）
{{1}}
如果需要，我很乐意提供更多信息。
答案 0 :(得分：9)
您可以在需要时尝试强制datagrid取消版本：
myDatagrid.CommitEdit();
myDatagrid.CancelEdit();
这对我有用，我在重新排序行时遇到了类似的问题。
答案 1 :(得分：5)
这是使用.NET Framework 4.5+修复的错误。不幸的是，对于我们这些坚持以前版本的人来说，错误仍然是一个问题。我发现的最佳解决方案是将DataGrid绑定到properties类型string。这样，就可以完全控制用户输入。通过完全控制，用户不应该触发任何错误，DataGrid不会使程序崩溃。
答案 2 :(得分：0)
我遇到了.NET 4.5.1的问题，这是唯一对我有用的东西。
ListCollectionView lcv = (ListCollectionView)CollectionViewSource.GetDefaultView(MyDatagrid.ItemsSource);
if (lcv.IsAddingNew)
lcv.CommitNew();
if (lcv.IsEditingItem)
lcv.CommitEdit();