[tim8w]

I have a standard DataGridView. One of the columns is a DataGridViewComboBoxColumn. When I select one of the ComboBox items, I want to trap the change and add additional columns based on the item selected in the ComboBox. I've tried using CellValueChanged for the DataGridView column, and a bunch of other events, but none of them is fired when the DataGridViewComboBox value is changed. What event can I trap to make this happen? Right now as I said, I am using CellValueChanged, but of course the event doesn't fire until I click on another cell...

[tim8w]

Here's what I had to end up doing:

Code:

    Private Sub dgvClass_EditingControlShowing(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewEditingControlShowingEventArgs) Handles dgvClass.EditingControlShowing
        If TypeOf e.Control Is ComboBox Then
            Dim combo As ComboBox = DirectCast(e.Control, ComboBox)

            If combo IsNot Nothing Then
                RemoveHandler combo.SelectedIndexChanged, _
                New EventHandler(AddressOf ComboBox_SelectedIndexChanged)


                AddHandler combo.SelectedIndexChanged, AddressOf ComboBox_SelectedIndexChanged
            End If
        End If
    End Sub