I'm just implementing the External filter as explained in the help : here
I'm building a grid based on a model.
When the FilterValue is updated when the text changes, I receive a "Input string was not in a correct format."
Here is some detail :
Stacktrace :
at System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal)
at System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info)
at System.String.System.IConvertible.ToInt32(IFormatProvider provider)
at System.Convert.ChangeType(Object value, Type conversionType, IFormatProvider provider)
at Telerik.Windows.Data.Expressions.FilterDescriptorExpressionBuilder.CreateValueExpression(Type targetType, Object value, CultureInfo culture)
at Telerik.Windows.Data.FilterDescriptor.CreateFilterExpression(ParameterExpression parameterExpression)
at Telerik.Windows.Data.FilterDescriptorBase.CreateFilterExpression(Expression instance)
at Telerik.Windows.Data.Expressions.FilterDescriptorCollectionExpressionBuilder.CreateBodyExpression()
at Telerik.Windows.Data.CompositeFilterDescriptor.CreateFilterExpression(ParameterExpression parameterExpression)
at Telerik.Windows.Data.FilterDescriptorBase.CreateFilterExpression(Expression instance)
at CustomFilterDescriptor.CreateFilterExpression(ParameterExpression parameterExpression) in \CustomFilterDescriptor.cs:line 45
at Telerik.Windows.Data.FilterDescriptorBase.CreateFilterExpression(Expression instance)
at Telerik.Windows.Data.Expressions.FilterDescriptorCollectionExpressionBuilder.CreateBodyExpression()
at Telerik.Windows.Data.Expressions.FilterExpressionBuilder.CreateFilterExpression()
at Telerik.Windows.Data.QueryableExtensions.Where(IQueryable source, CompositeFilterDescriptorCollection filterDescriptors)
at Telerik.Windows.Data.QueryableCollectionView.CreateView()
at Telerik.Windows.Data.QueryableCollectionView.get_QueryableView()
at Telerik.Windows.Data.QueryableCollectionView.CreateInternalList()
at Telerik.Windows.Data.QueryableCollectionView.EnsureInternalList()
at Telerik.Windows.Data.QueryableCollectionView.get_InternalList()
at Telerik.Windows.Data.QueryableCollectionView.get_InternalCount()
at Telerik.Windows.Data.QueryableCollectionView.get_IsEmpty()
at Telerik.Windows.Data.QueryableCollectionView.InitializeCurrencyOnRefresh()
at Telerik.Windows.Data.QueryableCollectionView.RefreshOverride()
at Telerik.Windows.Data.QueryableCollectionView.RefreshInternal()
at Telerik.Windows.Data.QueryableCollectionView.RefreshOrDefer()
at Telerik.Windows.Data.QueryableCollectionView.InvalidatePagingAndRefresh()
at Telerik.Windows.Data.QueryableCollectionView.OnFilterDescriptorsItemChanged(Object sender, ItemChangedEventArgs`1 e)
at Telerik.Windows.Data.ObservableItemCollection`1.RaiseGenericItemChanged(ItemChangedEventArgs`1 e)
at Telerik.Windows.Data.ObservableItemCollection`1.OnItemChanged(ItemChangedEventArgs`1 e)
at Telerik.Windows.Data.ObservableItemCollection`1.OnItemPropertyChanged(Object sender, PropertyChangedEventArgs e)
at System.ComponentModel.PropertyChangedEventHandler.Invoke(Object sender, PropertyChangedEventArgs e)
at Telerik.Windows.Data.DescriptorBase.OnPropertyChanged(PropertyChangedEventArgs args)
at Telerik.Windows.Data.DescriptorBase.OnPropertyChanged(String propertyName)
at CustomFilterDescriptor.set_FilterValue(String value) in CustomFilterDescriptor.cs:line 32
at FilterValueTextChanged(Object sender, TextChangedEventArgs e) in MyClass.xaml.cs:line 43
at System.Windows.Controls.TextChangedEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
at System.Windows.UIElement.RaiseEvent(RoutedEventArgs e)
at System.Windows.Controls.Primitives.TextBoxBase.OnTextChanged(TextChangedEventArgs e)
at System.Windows.Controls.Primitives.TextBoxBase.OnTextContainerChanged(Object sender, TextContainerChangedEventArgs e)
at System.Windows.Controls.TextBox.OnTextContainerChanged(Object sender, TextContainerChangedEventArgs e)
at System.Windows.Documents.TextContainerChangedEventHandler.Invoke(Object sender, TextContainerChangedEventArgs e)
at System.Windows.Documents.TextContainer.EndChange(Boolean skipEvents)
at System.Windows.Documents.TextContainer.System.Windows.Documents.ITextContainer.EndChange(Boolean skipEvents)
at System.Windows.Documents.TextRangeBase.EndChange(ITextRange thisRange, Boolean disableScroll, Boolean skipEvents)
at System.Windows.Documents.TextRange.System.Windows.Documents.ITextRange.EndChange(Boolean disableScroll, Boolean skipEvents)
at System.Windows.Documents.TextRange.ChangeBlock.System.IDisposable.Dispose()
at System.Windows.Documents.TextEditorTyping.DoTextInput(TextEditor This, String textData, Boolean isInsertKeyToggled, Boolean acceptControlCharacters)
at System.Windows.Documents.TextEditorTyping.TextInputItem.Do()
at System.Windows.Documents.TextEditorTyping.ScheduleInput(TextEditor This, InputItem item)
at System.Windows.Documents.TextEditorTyping.OnSpace(Object sender, ExecutedRoutedEventArgs e)
at System.Windows.Input.CommandBinding.OnExecuted(Object sender, ExecutedRoutedEventArgs e)
at System.Windows.Input.CommandManager.ExecuteCommandBinding(Object sender, ExecutedRoutedEventArgs e, CommandBinding commandBinding)
at System.Windows.Input.CommandManager.FindCommandBinding(CommandBindingCollection commandBindings, Object sender, RoutedEventArgs e, ICommand command, Boolean execute)
at System.Windows.Input.CommandManager.FindCommandBinding(Object sender, RoutedEventArgs e, ICommand command, Boolean execute)
at System.Windows.Input.CommandManager.OnExecuted(Object sender, ExecutedRoutedEventArgs e)
at System.Windows.UIElement.OnExecutedThunk(Object sender, ExecutedRoutedEventArgs e)
at System.Windows.Input.ExecutedRoutedEventArgs.InvokeEventHandler(Delegate genericHandler, Object target)
at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
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.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
at System.Windows.Input.RoutedCommand.ExecuteImpl(Object parameter, IInputElement target, Boolean userInitiated)
at System.Windows.Input.RoutedCommand.ExecuteCore(Object parameter, IInputElement target, Boolean userInitiated)
at System.Windows.Input.CommandManager.TranslateInput(IInputElement targetElement, InputEventArgs inputEventArgs)
at System.Windows.UIElement.OnKeyDownThunk(Object sender, KeyEventArgs e)
at System.Windows.Input.KeyEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
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.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
at System.Windows.Input.InputManager.ProcessStagingArea()
at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
at System.Windows.Interop.HwndKeyboardInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawKeyboardActions actions, Int32 scanCode, Boolean isExtendedKey, Boolean isSystemKey, Int32 virtualKey)
at System.Windows.Interop.HwndKeyboardInputProvider.ProcessKeyAction(MSG& msg, Boolean& handled)
at System.Windows.Interop.HwndSource.CriticalTranslateAccelerator(MSG& msg, ModifierKeys modifiers)
at System.Windows.Interop.HwndSource.OnPreprocessMessage(Object param)
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.InvokeImpl(DispatcherPriority priority, TimeSpan timeout, Delegate method, Object args, Int32 numArgs)
at System.Windows.Threading.Dispatcher.Invoke(DispatcherPriority priority, Delegate method, Object arg)
at System.Windows.Interop.HwndSource.OnPreprocessMessageThunk(MSG& msg, Boolean& handled)
at System.Windows.Interop.HwndSource.WeakEventPreprocessMessage.OnPreprocessMessage(MSG& msg, Boolean& handled)
at System.Windows.Interop.ThreadMessageEventHandler.Invoke(MSG& msg, Boolean& handled)
at System.Windows.Interop.ComponentDispatcherThread.RaiseThreadMessage(MSG& msg)
at System.Windows.Threading.Dispatcher.PushFrameImpl(DispatcherFrame frame)
at System.Windows.Threading.Dispatcher.PushFrame(DispatcherFrame frame)
at System.Windows.Threading.Dispatcher.Run()
at System.Windows.Application.RunDispatcher(Object ignore)
at System.Windows.Application.RunInternal(Window window)
at System.Windows.Application.Run(Window window)
Any idea ?
Thanks by advance.
Xavier
3 Answers, 1 is accepted
Please excuse us for the late reply.
May you take a look at our online demo and test instantly the same functionality ? Are you able to reproduce the same behavior ? Is there anything more specific that I need to do in order to get the exception that you mentioned ?
Best wishes,
Maya
the Telerik team
Rank 1
Thanks for your reply.
In fact I had another version of the CustomFilterDescriptor class.
I replaced it but now got anoter error.
Basically I get an object reference not set to an instance of an object.
It fails here :
private
void UpdateCompositeFilterValues(){
foreach (FilterDescriptor descriptor in this.compositeFilterDesriptor.FilterDescriptors){
object convertedValue = DefaultValue(descriptor.MemberType);
MemberType is null.....
I use a Model that I bind to the grid.
Thanks for your help.
Kind regards,
Xavier
In order to provide you with an appropriate solution, I would need a bit more details. What is the CustomFitlerDescriptor that you create ? How do you implement it in the RadGridView ? How does it differ from the one in the example ? Generally, any relevant information and code-snippets would be helpful.
Maya
the Telerik team