Excel like filtering null values in column cause ArgumentNullException

[John]

This was working before, but now when there are null values in a column we cannot use excel like filtering.  I don't think anything changed on our end.  When I click the filter icon in the column header I get this exception:

System.ArgumentNullException was unhandled
  HResult=-2147467261
  Message=Key cannot be null.
Parameter name: key
  ParamName=key
  Source=mscorlib
  StackTrace:
       at System.Collections.Hashtable.ContainsKey(Object key)
       at Telerik.WinControls.UI.RadListFilterDistinctValuesTable.ContainsFilterValue(Object value)
       at Telerik.WinControls.UI.FilterMenuTreeElement.Initialize()
       at Telerik.WinControls.UI.FilterMenuTreeItem.OnLoaded()
       at Telerik.WinControls.RadElement.OnLoad(Boolean recursive)
       at Telerik.WinControls.RadElement.OnLoad(Boolean recursive)
       at Telerik.WinControls.RadElement.OnLoad(Boolean recursive)
       at Telerik.WinControls.RadElement.OnLoad(Boolean recursive)
       at Telerik.WinControls.RadElement.OnLoad(Boolean recursive)
       at Telerik.WinControls.RadElement.OnLoad(Boolean recursive)
       at Telerik.WinControls.RadElement.OnLoad(Boolean recursive)
       at Telerik.WinControls.RadControl.OnLoad(Size desiredSize)
       at Telerik.WinControls.RadControl.LoadElementTree(Size desiredSize)
       at Telerik.WinControls.RadControl.OnCreateControl()
       at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
       at System.Windows.Forms.Control.CreateControl()
       at System.Windows.Forms.Control.WmShowWindow(Message& m)
       at System.Windows.Forms.Control.WndProc(Message& m)
       at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
       at Telerik.WinControls.RadControl.WndProc(Message& m)
       at Telerik.WinControls.UI.RadPopupControlBase.WndProc(Message& m)
       at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
       at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
       at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

 

I tried to attached a sample app (in a zip file) which reproduces this problem for us with the latest released version of the grid, but you do not seem to allow zip files to be attached.

[Andrea]

Hi , i have same issue, looks like has been resolved but we have to wait 2016 Q1 or use the 2015.3.930 instead of 2015.3.1140 or use the workaround described here in my case i switched back to 2015.3.930

Best regards

[Dimitar]

Hello John,

Thank you for writing.

This appears to be the issue which Andrea has pointed. You can try the workaround provided there and if it does not work for your case I want to kindly ask you to submit a support ticket where you can attach the sample project that reproduces the issue.

I hope this is useful.

Regards,
Dimitar
Telerik

[John]

The linked work around seems to fix it for me.  Thank you for your replies