[Mono-winforms-list] another datagridview question

John McD judetherude at hotmail.com
Thu Apr 10 04:15:29 EDT 2008

So I have a datagridview in virtual mode my form, and I have a loop where I
add a row to it before calling the invalidate method to get it to redraw.

It appears to run through a couple of iterations of the loop before
crashing, and I never see any rows being drawn in the form.  The following
output is given and as you can see, the exception simply points to the
initial program.cs...so that doesn't help me much in pinpointing what
specific code is causing the problem:

Unhandled Exception: System.InvalidOperationException: Getting the State
property of a shared row is not a valid operation.
  at System.Windows.Forms.DataGridViewRow.get_State () [0x00000] 
  at System.Windows.Forms.DataGridView.OnPaint
(System.Windows.Forms.PaintEventArgs e) [0x00000] 
  at System.Windows.Forms.Control.WmPaint (System.Windows.Forms.Message& m)
  at System.Windows.Forms.Control.WndProc (System.Windows.Forms.Message& m)
  at System.Windows.Forms.DataGridView.WndProc
(System.Windows.Forms.Message& m) [0x00000] 
  at System.Windows.Forms.Control+ControlWindowTarget.OnMessage
(System.Windows.Forms.Message& m) [0x00000] 
  at System.Windows.Forms.Control+ControlNativeWindow.WndProc
(System.Windows.Forms.Message& m) [0x00000] 
  at System.Windows.Forms.NativeWindow.WndProc (IntPtr hWnd, Msg msg, IntPtr
wParam, IntPtr lParam) [0x00000] 
  at System.Windows.Forms.XplatUIX11.DispatchMessage
(System.Windows.Forms.MSG& msg) [0x00000] 
  at System.Windows.Forms.XplatUI.DispatchMessage (System.Windows.Forms.MSG&
msg) [0x00000] 
  at System.Windows.Forms.Application.RunLoop (Boolean Modal,
System.Windows.Forms.ApplicationContext context) [0x00000] 
  at System.Windows.Forms.Application.Run
(System.Windows.Forms.ApplicationContext context) [0x00000] 
  at System.Windows.Forms.Application.Run (System.Windows.Forms.Form
mainForm) [0x00000] 
  at Venice.Program.Main () [0x0000b] in

Is there a way I can make every row non-shared and perhaps that would fix
the problem?

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