DataGridViewComboBoxColumn in MDI Child Form

[Najam Fazal]

Hi,
I have a main form having the MDI Parent Control. I have a menu toolstrip menu "set status" which opens a Child Form having a DataGridView. The DataGridView has a DataGridViewComboboxColumn which is populated from a SQL CE database.
The problem is that when i open this "Set Status" Form as a Child form then DataGridViewComboBoxColumn works abruptly, while when i open "Set Status" form as separate form, it just work perfect! I can not understand what is the problem??

When user click "Set Task" MenuStrip, following code is executed:

Private Sub SetStatusToolStripMenuItem1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SetStatusToolStripMenuItem1.Click

Tasks.MdiParent = Me
Tasks.Show()

End Sub

Please suggest any solution?

[jmcilhinney]

What exactly do you mean by abruptly?

[Najam Fazal]

I have attached two snapshots. The DataGridViewComboBoxColumn is added randomly at any column index in DataGridView every time i click custom made filter. While it is all working fine if i does not include it in MDI Parent Form

[jmcilhinney]

It sounds like you have a situation where at least one of the cells in that column has a Value that does not correspond to one of the items in the drop-down list. That could be an issue with the way that you're binding, e.g. the grid is bound before the column.

[Najam Fazal]

I guess there is a problem in binding the data... i'll look at it later, right now i'll put this out of the MDI Parent form to keep things going.. thanks for your help