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By Craig Swearingen - 9 Years Ago
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Some users of my application experience the exception below when closing a NUIDocument that has an NForm for its client. The NForm has a CommandBarsManager on it. Seems to be a timing issue as it doesn't happen consistently so I can't provide a test program to demonstrate this. I'm using build 13.11.26.12. Could you change your get_Visible() method to check for NULL before using its objects?
System.NullReferenceException: Object reference not set to an instance of an object.
at Nevron.UI.WinForm.Controls.NCommandState.get_Visible()
at Nevron.UI.WinForm.Controls.NCommandParent.OnPaint(PaintEventArgs e)
at System.Windows.Forms.Control.PaintWithErrorHandling(PaintEventArgs e, Int16 layer)
at System.Windows.Forms.Control.WmPaint(Message& m)
at System.Windows.Forms.Control.WndProc(Message& m)
at Nevron.UI.WinForm.Controls.NCommandParent.WndProc(Message& m)
at System.Windows.Forms.Nativewindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
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