I have a grid with 3 column groups and various columns assigned to each group. At run time, the system generates the following exception when the user attempts to resize the column group:
************** Exception Text **************System.NullReferenceException: Object reference not set to an instance of an object. at Infragistics.Win.UltraWinGrid.HeaderUIElement.ApplyAdjustment(Point delta) at Infragistics.Win.AdjustableUIElement.OnMouseUp(MouseEventArgs e) at Infragistics.Win.UltraWinGrid.HeaderUIElement.OnMouseUp(MouseEventArgs e) at Infragistics.Win.ControlUIElementBase.ProcessMouseUpHelper(Object sender, MouseEventArgs e) at Infragistics.Win.ControlUIElementBase.ProcessMouseUp(Object sender, MouseEventArgs e) at Infragistics.Win.Utilities.ProcessEvent(Control control, ProcessEvent eventToProcess, EventArgs e) at Infragistics.Win.UltraControlBase.OnMouseUp(MouseEventArgs e) at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks) at System.Windows.Forms.Control.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.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
If the user attempts to resize a column within the group, it works fine. Is there anyting I can do to stop this exception?
Do you have the latest hot fix?
I am also experiencing this exception using v7.3.20073.38. Can you tell me which (if any) hot fix covers this?
Note that I have checked and this exception did not occur in 6.2.
Thanks.
I don't know if any hot fix fixes this issue, it's just a good idea to get the hot fix and see before spending time trying to debug something that may already be fixed. :)
Has this ever been verified that it was fixed with a hot fix?
I'm experiencing the same problem.
I never got it to work correctly so I had to redsign my grid.
I applied 20073_CLR2x_HotFix_1053 and the problem is gone.