How to activate combobox on first click (Datagridview)

Question

In winforms, you need to click the combobox twice to properly activate it - the first time to focus it, the second time to actually get the dropdown list.

How do I c

Answer 1

Set the following on your DataGridView:

EditMode = EditOnEnter

This is probably the easiest solution and has been the workaround for many users here on SO when this question gets asked.

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EDIT :

Per here do the following:

Set the Editmode:

EditMode = EditOnKeystrokeOrF2

Modify the EditingControlShowing event on the datagridview:

private void dataGridView1_EditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
{
    ComboBox ctl = e.Control as ComboBox;
    ctl.Enter -= new EventHandler(ctl_Enter);
    ctl.Enter += new EventHandler(ctl_Enter);

}

void ctl_Enter(object sender, EventArgs e)
{
    (sender as ComboBox).DroppedDown = true;
}

This will get you your desired results. Let me know if that doesn't do it.