DataGridViewのセルにおける編集イベントを取得する方法

DataGridViewのセルにおける編集イベントを取得する方法
VB.NET

Private Sub dgv1_EditingControlShowing(ByVal sender As Object, _
        ByVal e As DataGridViewEditingControlShowingEventArgs) _
        Handles dgv1.EditingControlShowing
    If TypeOf e.Control Is DataGridViewTextBoxEditingControl Then
        Dim dgv As DataGridView = CType(sender, DataGridView)

        Dim tb As DataGridViewTextBoxEditingControl = _
            CType(e.Control, DataGridViewTextBoxEditingControl)

        RemoveHandler tb.KeyPress, AddressOf dataGridViewTextBox_KeyPress

        If dgv.CurrentCell.OwningColumn.Name = "Column1" Then
            AddHandler tb.KeyPress, AddressOf dataGridViewTextBox_KeyPress
        End If
    End If
End Sub

Private Sub dataGridViewTextBox_KeyPress(ByVal sender As Object, _
        ByVal e As KeyPressEventArgs)
    If e.KeyChar < "0"c Or e.KeyChar > "9"c Then
        e.Handled = True
    End If
End Sub

C#

private void dgv1_EditingControlShowing(object sender,
    DataGridViewEditingControlShowingEventArgs e)
{
    if (e.Control is DataGridViewTextBoxEditingControl)
    {
        DataGridView dgv = (DataGridView)sender;

        DataGridViewTextBoxEditingControl tb =
            (DataGridViewTextBoxEditingControl)e.Control;

        tb.KeyPress -=
            new KeyPressEventHandler(dataGridViewTextBox_KeyPress);

        if (dgv.CurrentCell.OwningColumn.Name == "Column1")
        {
            tb.KeyPress +=
                new KeyPressEventHandler(dataGridViewTextBox_KeyPress);
        }
    }
}

private void dataGridViewTextBox_KeyPress(object sender,
    KeyPressEventArgs e)
{
    if (e.KeyChar < '0' || e.KeyChar > '9')
    {
        e.Handled = true;
    }
}