<p>I have a DataGridView with one DataGridViewComboBoxColumn in my WinForms application. I need to drop down (open) this DataGridViewComboBoxColumn manually, let's say after a button is clicked.</p>

<p>The reason I need this is I have set SelectionMode to FullRowSelect and I need to click 2-3 times to open the combo box. I want to click on the combobox cell and it should drop down immediately. I want to do this with CellClick event, or is there any other way?</p>

<p>I am searching in Google and VS help, but I haven't found any information yet.</p>

<p>Can anybody help please?</p>

I know this can't be the ideal solution but it does create a single click combo box that works within the cell.
```
```
Private Sub cell_Click(ByVal sender As System.Object, ByVal e As DataGridViewCellEventArgs) Handles DataGridView1.CellClick
        DataGridView1.BeginEdit(True)
        If DataGridView1.Rows(e.RowIndex).Cells(ddl.Name).Selected = True Then
            DirectCast(DataGridView1.EditingControl, DataGridViewComboBoxEditingControl).DroppedDown = True
        End If
    End Sub
```
```
where "ddl" is the combobox cell I added in the gridview.