Currently, when exporting/copying cells from a column that is bound to a nested property, the base logic of the GridViewDataColumn is that it has a separate logic for this setup. When exporting/copying, the column will try to retrieve the display value rather than the underlying value.

The following exception is raised when adding a ColumnGroupDescriptor to the GroupDescriptors property of a RadGridView. This bug is data specific and I've only been able to duplicate it with a large data set but the issue seems like it could be addressed without the actual data, given that the code causing the issue is apparently passing a pixelWidth < 0.

System.ArgumentOutOfRangeException: 'The parameter value must be greater than zero.
Parameter name: pixelWidth'

  PresentationCore.dll!System.Windows.Media.Imaging.RenderTargetBitmap.RenderTargetBitmap(int pixelWidth, int pixelHeight, double dpiX, double dpiY, System.Windows.Media.PixelFormat pixelFormat) Unknown
  Telerik.Windows.Controls.dll!Telerik.Windows.Controls.FrameworkElementToImageConverter.ToImage(System.Windows.FrameworkElement element) Unknown
  Telerik.Windows.Controls.GridView.dll!Telerik.Windows.Controls.GridView.GridViewGroupPanel.ConvertFrameworkElementToImage(System.Windows.FrameworkElement frameworkElement) Unknown
  Telerik.Windows.Controls.GridView.dll!Telerik.Windows.Controls.GridView.GridViewGroupPanel.GetEffectiveContentForDescriptor(Telerik.Windows.Data.IGroupDescriptor descriptor) Unknown
  Telerik.Windows.Controls.GridView.dll!Telerik.Windows.Controls.GridView.GridViewGroupPanel.PrepareContainerForItemOverride(System.Windows.DependencyObject element, object item) Unknown
  PresentationFramework.dll!System.Windows.Controls.ItemsControl.MS.Internal.Controls.IGeneratorHost.PrepareItemContainer(System.Windows.DependencyObject container, object item) Unknown
  PresentationFramework.dll!System.Windows.Controls.Panel.AddChildren(System.Windows.Controls.Primitives.GeneratorPosition pos, int itemCount) Unknown
  PresentationFramework.dll!System.Windows.Controls.Panel.OnItemsChangedInternal(object sender, System.Windows.Controls.Primitives.ItemsChangedEventArgs args) Unknown
  PresentationFramework.dll!System.Windows.Controls.Panel.OnItemsChanged(object sender, System.Windows.Controls.Primitives.ItemsChangedEventArgs args) Unknown
  PresentationFramework.dll!System.Windows.Controls.ItemContainerGenerator.OnItemAdded(object item, int index, System.Collections.Specialized.NotifyCollectionChangedEventArgs collectionChangedArgs) Unknown
  PresentationFramework.dll!System.Windows.Controls.ItemContainerGenerator.OnCollectionChanged(object sender, System.Collections.Specialized.NotifyCollectionChangedEventArgs args) Unknown
  WindowsBase.dll!System.Windows.WeakEventManager.ListenerList<System.Collections.Specialized.NotifyCollectionChangedEventArgs>.DeliverEvent(object sender, System.EventArgs e, System.Type managerType) Unknown
  WindowsBase.dll!System.Windows.WeakEventManager.DeliverEvent(object sender, System.EventArgs args) Unknown
  PresentationFramework.dll!System.Windows.Data.CollectionView.OnCollectionChanged(System.Collections.Specialized.NotifyCollectionChangedEventArgs args) Unknown
  WindowsBase.dll!System.Windows.WeakEventManager.ListenerList<System.Collections.Specialized.NotifyCollectionChangedEventArgs>.DeliverEvent(object sender, System.EventArgs e, System.Type managerType) Unknown
  WindowsBase.dll!System.Windows.WeakEventManager.DeliverEvent(object sender, System.EventArgs args) Unknown
  PresentationFramework.dll!System.Windows.Data.CollectionView.OnCollectionChanged(System.Collections.Specialized.NotifyCollectionChangedEventArgs args) Unknown
  PresentationFramework.dll!System.Windows.Data.ListCollectionView.ProcessCollectionChangedWithAdjustedIndex(System.Collections.Specialized.NotifyCollectionChangedEventArgs args, int adjustedOldIndex, int adjustedNewIndex) Unknown
  System.dll!System.Collections.ObjectModel.ObservableCollection<System.__Canon>.OnCollectionChanged(System.Collections.Specialized.NotifyCollectionChangedEventArgs e) Unknown
  Telerik.Windows.Data.dll!Telerik.Windows.Data.ObservableItemCollection<Telerik.Windows.Data.IGroupDescriptor>.OnCollectionChanged(System.Collections.Specialized.NotifyCollectionChangedEventArgs e) Unknown
  System.dll!System.Collections.ObjectModel.ObservableCollection<System.__Canon>.InsertItem(int index, System.__Canon item) Unknown
> Sage.Platform.Core.Wpf.dll!Sage.EstDataSource.Wpf.RadGridViewSerializer.DeserializeGroupDescriptors(Telerik.Windows.Controls.GridView.GridViewDataControl grid, Sage.Wpf.Utilities.GridViewSerializationInfo serializationInfo) Line 524 C#
  Sage.Platform.Core.Wpf.dll!Sage.EstDataSource.Wpf.RadGridViewSerializer.DeserializeGridInfo(Telerik.Windows.Controls.GridView.GridViewDataControl grid, System.Func<string, bool> isRenamableColumn, System.Xml.XmlReader reader, bool skipDeserializeGroups) Line 235 C#
  Sage.Platform.Core.Wpf.dll!Sage.EstDataSource.Wpf.RadGridViewSerializer.DeserializeGridSettings(Telerik.Windows.Controls.GridView.GridViewDataControl grid, System.Func<string, bool> isRenamableColumn, System.IO.Stream stream, bool skipDeserializeGroups) Line 199 C#
  Sage.Platform.Core.Wpf.dll!Sage.EstDataSource.Wpf.RadGridViewSerializer.DeserializeGridSettings(Telerik.Windows.Controls.GridView.GridViewDataControl grid, System.Func<string, bool> isRenamableColumn, System.IO.Stream stream) Line 168 C#
  Sage.Estimating.DataSource.Wpf.dll!Sage.EstDataSource.Wpf.ViewModel.EstimateDB.EstimateGridViewModel.DeserializeLayoutGridInfo(Telerik.Windows.Controls.RadGridView dataGrid, System.IO.MemoryStream stream) Line 122 C#
  Sage.Estimating.DataSource.Wpf.dll!Sage.EstDataSource.Wpf.ViewModel.EstimateDB.EstimateGridViewModel.DeserializeCurrentLayoutGridInfo(Telerik.Windows.Controls.RadGridView dataGrid, System.IO.MemoryStream defaultLayoutStream) Line 257 C#
  Sage.Estimating.DataSource.Wpf.dll!Sage.EstDataSource.Wpf.View.EstimateDB.EstimateGrid.ApplyCurrentLayoutToGrid() Line 210 C#
  Sage.Estimating.DataSource.Wpf.dll!Sage.EstDataSource.Wpf.View.EstimateDB.EstimateGrid.EstimateInfoGrid_Loaded(object sender, System.Windows.RoutedEventArgs e) Line 167 C#
  PresentationCore.dll!System.Windows.EventRoute.InvokeHandlersImpl(object source, System.Windows.RoutedEventArgs args, bool reRaised) Unknown
  PresentationCore.dll!System.Windows.UIElement.RaiseEventImpl(System.Windows.DependencyObject sender, System.Windows.RoutedEventArgs args) Unknown
  PresentationFramework.dll!System.Windows.BroadcastEventHelper.BroadcastEvent(System.Windows.DependencyObject root, System.Windows.RoutedEvent routedEvent) Unknown
  PresentationFramework.dll!System.Windows.BroadcastEventHelper.BroadcastLoadedEvent(object root) Unknown
  PresentationCore.dll!MS.Internal.LoadedOrUnloadedOperation.DoWork() Unknown
  PresentationCore.dll!System.Windows.Media.MediaContext.FireLoadedPendingCallbacks() Unknown
  PresentationCore.dll!System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks() Unknown
  PresentationCore.dll!System.Windows.Media.MediaContext.RenderMessageHandlerCore(object resizedCompositionTarget) Unknown
  PresentationCore.dll!System.Windows.Media.MediaContext.RenderMessageHandler(object resizedCompositionTarget) Unknown
  WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback, object args, int numArgs) Unknown
  WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.TryCatchWhen(object source, System.Delegate callback, object args, int numArgs, System.Delegate catchHandler) Unknown
  WindowsBase.dll!System.Windows.Threading.DispatcherOperation.InvokeImpl() Unknown
  WindowsBase.dll!MS.Internal.CulturePreservingExecutionContext.CallbackWrapper(object obj) Unknown
  mscorlib.dll!System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state, bool preserveSyncCtx) Unknown
  mscorlib.dll!System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state, bool preserveSyncCtx) Unknown
  mscorlib.dll!System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext executionContext, System.Threading.ContextCallback callback, object state) Unknown
  WindowsBase.dll!MS.Internal.CulturePreservingExecutionContext.Run(MS.Internal.CulturePreservingExecutionContext executionContext, System.Threading.ContextCallback callback, object state) Unknown
  WindowsBase.dll!System.Windows.Threading.DispatcherOperation.Invoke() Unknown
  WindowsBase.dll!System.Windows.Threading.Dispatcher.ProcessQueue() Unknown
  WindowsBase.dll!System.Windows.Threading.Dispatcher.WndProcHook(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled) Unknown
  WindowsBase.dll!MS.Win32.HwndWrapper.WndProc(System.IntPtr hwnd, int msg, System.IntPtr wParam, System.IntPtr lParam, ref bool handled) Unknown
  WindowsBase.dll!MS.Win32.HwndSubclass.DispatcherCallbackOperation(object o) Unknown
  WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate callback, object args, int numArgs) Unknown
  WindowsBase.dll!System.Windows.Threading.ExceptionWrapper.TryCatchWhen(object source, System.Delegate callback, object args, int numArgs, System.Delegate catchHandler) Unknown
  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) Unknown
  [Native to Managed Transition]
  [Managed to Native Transition]
  WindowsBase.dll!System.Windows.Threading.Dispatcher.PushFrameImpl(System.Windows.Threading.DispatcherFrame frame) Unknown
  PresentationFramework.dll!System.Windows.Application.RunDispatcher(object ignore) Unknown
  PresentationFramework.dll!System.Windows.Application.RunInternal(System.Windows.Window window) Unknown
  Sage.EstManagementConsole.exe!Sage.EstManagementConsole.EstimatingManagementConsoleApp.Main() Unknown

The vertical scrolling seems to become very slow and even unresponsive, when the following conditions are met:

• left and right frozen columns count is 0
• the summary width of all columns is smaller than the width of the RadGridView element

To minimize the issue, you can set the GroupRenderMode property of RadGridView to Nested.

Exception when resizing column with width set to star and min-width set to 0.

Set the properties to the above and resize a column to 0 and then to the original width -> an exception occurs.

 

The RadGridView control hangs when the frozen columns are enabled and the application is resized. The exact resizing depends on the screen resolution and the exact new size. This was originally recreated on a monitor with 1600x900 resolution 125% DPI and the application was maximized (resized from restored to full screen size). The issue occurs in the Fluent theme. Also, the FluentPalette.Palette.ScrollBarsMode static property should be set to Normal.

To work this around, you can overrider the MeasureOverride method of RadGridView and add the following code:

 

In a scenario where the RadGridView control utilizes the right frozen columns functionality with the RowIndicatorVisibility="Collapsed", CanUserFreezeColumns="False", and RightFrozenColumnsSplitterVisibility="Visible, cells can become missing while scrolling.

Currently, the delimiter is hardcoded to ",". Add a setting that allows changing this and also synchronizing it with the current culture of the system.

When an initial filter is set via the ColumnFilterDescriptor property of a column, changing the filter's value via the distinct values in the UI causes the control to not be filtered correctly.

NullReferenceException occurs when the the automation peers creation for the rows goes over 10,000 peers (the MaxCachedPeersSize setting of the GridViewDataControlAutomationPeer). The exception occurs only when the 'record' modifier is used in the class definition. For example:

The exception stacktrace is:

.

To work this around use the "class" modifier instead of "record". For example, instead of:

Use:

 Or alternatively, increase the MaxCachedPeersSize value.

 

Distinct values are not displayed when setting the FilterMemberPath to the Date property of a DateTime DataTable column when it contains DBNull.Value.

Generally, this is present because while the distinct values are generated, we check for the Date property in each row, however, when it reaches a row that has a DBNull.Value value, an exception is thrown because the Date property cannot be found in null.

When adding a button cell as below, if the button cell is selected the button doesn't work when tapping it.

As stated in the comment, adding the property below to the RadButton solves the issue.

telerik:TouchManager.TouchMode="None"

I have attached a sample project in which the error occurs, simply tap a button, close the MessageBox and tap the same button again. Thank you for your time!

In the case where some of the columns are hidden and all of the columns' display indexes are changed, applying grouping could result in some of the cells from the columns that have custom CellTemplate to not receive it.

To work this around, you could manually change the widths of the columns by iterating the Columns collection as shown below:

When a RadGridView is filtered, grouped, and sorted, some of the rows cannot be selected when the SelectionMode is set to Extended and the SelectionUnit is set to Mixed.

If a RadDocking has its theme set to Windows 11 via the StyleManager.Theme attached property, placing a RadGridView inside (styled with a different theme, such as Office_Black, Summer, etc.) will cause its cells to look merged after performing an edit operation.

As a workaround, the RowHeight and the FontSize properties of the RadGridView instance can be used to resolve this.

Provide a way to change sort comparer when grouping.

Using a VirtualQueryableCollectionView as an item source will not maintain selection after a sort.

Add a mechanism to change the fill/foreground color of the funnel icon in the column header. The funnel is a FilteringDropDown element and currently the fill of the icon is hardcoded. 

Add an extra property in the FilteringDropDown element to control this color or sync the current setting with the theme palette (e.g. Windows11Palette), so it can be changed using the palette settings.

You are able to resize columns using the columns gripper. The corresponding group will be automatically resized. We can provide a way to resize the column groups. The columns inside the group will be automatically resized with the group.