Question

I’m working with a data grid that contains a Combo Box Column, but editing this Combo Box (by simply clicking on it) gets annoying sometimes, since one must click at least twice to change the value of that field. I want to change that behaviour, so I thought it would be very simple: just create a OnMouseOver event to make the mouse-overed combo box be selected, but the only available event is the Disposed one.

Is there any way to change this behaviour?

Answer 1

I just dealt with the same problem, and solved it by setting the DataGridView.EditMode to EditOnEnter.

If you don’t like that behaviour for all your other columns, I found this suggestion for placing in the CellEnter event:

if (DataGridView1.Columns[e.ColumnIndex] is DataGridViewComboBoxColumn)
{
    ((DataGridViewComboBoxEditingControl)DataGridView1.EditingControl).DroppedDown = true;
}

I haven’t tried it, but it looks promising. The same technique is discussed on this question.