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Grouping and sorting throw NullReferenceException

Thread ID:





53698 Dec 19,2006 09:45 AM UTC Dec 20,2006 12:15 PM UTC WinForms 1
Tags: Grouping
David Vanstone
Asked On December 19, 2006 09:45 AM UTC

Exception Source: Syncfusion.Grouping.Base
Exception Type: System.NullReferenceException
Exception Message: Object reference not set to an instance of an object.
Exception Target Site: get_ParentNestedTable

---- Stack Trace ----
Radar.exe: N 00013
Syncfusion.Windows.Forms.Grid.Grouping.GridNestedTableControlCellRenderer.SwitchNestedTable(nestedTable As GridNestedTable, rowIndex As Int32, colIndex As Int32)
Radar.exe: N 00167
Syncfusion.Windows.Forms.Grid.Grouping.GridNestedTableControlCellRenderer.SwitchNestedTable(rowIndex As Int32, colIndex As Int32)
Radar.exe: N 00124
Syncfusion.Windows.Forms.Grid.Grouping.GridNestedTableControlCellRenderer.OnHitTest(rowIndex As Int32, colIndex As Int32, e As MouseEventArgs, controller As IMouseController)
Radar.exe: N 00188
Syncfusion.Windows.Forms.Grid.GridCellRendererBase.RaiseHitTest(rowIndex As Int32, colIndex As Int32, mouseEventArgs As MouseEventArgs, controller As IMouseController)
Radar.exe: N 00201
Syncfusion.Windows.Forms.Grid.Grouping.ClickCellsHitTestInfo..ctor(grid As GridControlBase, e As MouseEventArgs, controller As IMouseController)
Radar.exe: N 00561
Syncfusion.Windows.Forms.Grid.Grouping.GridTableClickCellsMouseController.HitTest(e As MouseEventArgs, controller As IMouseController)
Radar.exe: N 00570
Syncfusion.Windows.Forms.MouseControllerDispatcher.HitTest(point As Point, mouseButton As MouseButtons, clicks As Int32, controller As IMouseController&)
Radar.exe: N 00159
Syncfusion.Windows.Forms.MouseControllerDispatcher.ProcessMouseMove(e As MouseEventArgs)
Radar.exe: N 00402
Syncfusion.Windows.Forms.ScrollControllMouseControllerDispatcher.ScrollControlMouseMoveHandled(sender As Object, e As MouseEventArgs)
Radar.exe: N 00019
Syncfusion.Windows.Forms.ScrollControl.OnScrollControlHandledMouseMove(e As MouseEventArgs)
Radar.exe: N 00028
Syncfusion.Windows.Forms.ScrollControl.OnMouseMove(e As MouseEventArgs)
Radar.exe: N 01709
Syncfusion.Windows.Forms.Grid.GridControlBase.OnMouseMove(e As MouseEventArgs)
Radar.exe: N 00112
Syncfusion.Windows.Forms.Grid.Grouping.GridTableControl.OnMouseMove(e As MouseEventArgs)
Radar.exe: N 00031
System.Windows.Forms.Control.WmMouseMove(m As Message&)
Radar.exe: N 00134
System.Windows.Forms.Control.WndProc(m As Message&)
Radar.exe: N 01642
Syncfusion.Windows.Forms.ScrollControl.WndProc(msg As Message&)
Radar.exe: N 00670
Syncfusion.Windows.Forms.Grid.GridControlBase.WndProc(msg As Message&)
Radar.exe: N 00656
Syncfusion.Windows.Forms.Grid.Grouping.GridTableControl.WndProc(msg As Message&)
Radar.exe: N 00135
System.Windows.Forms.ControlNativeWindow.OnMessage(m As Message&)
Radar.exe: N 00012
System.Windows.Forms.ControlNativeWindow.WndProc(m As Message&)
Radar.exe: N 00213
System.Windows.Forms.NativeWindow.Callback(hWnd As IntPtr, msg As Int32, wparam As IntPtr, lparam As IntPtr)
Radar.exe: N 00116

Administrator [Syncfusion]
Replied On December 20, 2006 12:15 PM UTC

Hi David,

Thank you for being patience.

Are you using multiple threads in your application? Is the grid is being loaded from a separate thread? Is it possible for you to post us a demo application to reproduce the issue here or modify the sample in the thread (http://www.syncfusion.com/support/forums/message.aspx?&MessageID=53697 )? So we would recommend you a better solution.

Have a nice day.

Best regards,


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