VS Bug on FormClosing datagridviewcomboboxcell value is not valid

Error message may be “Field called xxx does not exist”

Try this on Form closing

Private Sub frm_FormClosing(sender As Object, e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
    Me.MyGridView.AutoSizeRowsMode = DataGridViewAutoSizeRowsMode.None
End Sub

I would hazard to suggest thatVisual Studio does not dispose of the datagridview in the correct sequence

This sometimes occurs when my personal code > SetUpDataGridView may programmatically set the AutoSizeRowsMode.


This link http://social.msdn.microsoft.com/forums/en-US/winformsdatacontrols/thread/88c3adee-ed2a-41ee-9407-c3314588e08a/
Suggests it may be something to do with autosize, when there is a combobox created. The order of creation and setting may be important.

“If you autosize the column but have not provided the combo box column with a valid datasource or you haven’t yet added items to the combo box column’s items collection then you’ll get this error at startup because autosizing requires the cell’s FormattedValue to be requested. Requesting the FormattedValue of a combo box cell is where the check is done that may raise the data error exception you are seeing.

Set the autosize mode after you fill the combo box and things should be ok.

Mark Rideout – DataGridView Program Manager – Microsoft”

Or create the comboboxcolumn then clear the autosize modes > run > re-set the autosize mode.
Or programattically set the autosize after form has designer InitialiseComponent code has loaded.

2 Responses to VS Bug on FormClosing datagridviewcomboboxcell value is not valid

  1. steve3906 says:

    Used 16-Nov-2011 proving value of blog

  2. steve3906 says:

    Used 29-Dec-2011 used again

Leave a Reply to steve3906 Cancel reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

%d bloggers like this: