DataGridViewセルの選択時の枠を非表示にする方法

DataGridViewセルの選択時の枠を非表示にする方法
VB.NET

Private Sub dgv1_CellPainting(ByVal sender As Object, _
        ByVal e As DataGridViewCellPaintingEventArgs) _
        Handles dgv1.CellPainting
    If e.ColumnIndex >= 0 And e.RowIndex >= 0 Then
        Dim paintParts As DataGridViewPaintParts = _
            e.PaintParts And Not DataGridViewPaintParts.Focus
        e.Paint(e.ClipBounds, paintParts)
        e.Handled = True
    End If
End Sub

C#

private void dgv1_CellPainting(object sender,
    DataGridViewCellPaintingEventArgs e)
{
    if (e.ColumnIndex >= 0 && e.RowIndex >= 0)
    {
        DataGridViewPaintParts paintParts =
            e.PaintParts & ~DataGridViewPaintParts.Focus;
        e.Paint(e.ClipBounds, paintParts);
        e.Handled = true;
    }
}

RowPrePaintイベントを活用して選択枠を非表示化する方法
VB.NET

Private Sub dgv1_RowPrePaint(ByVal sender As Object, _
        ByVal e As DataGridViewRowPrePaintEventArgs) _
        Handles dgv1.RowPrePaint
    e.PaintParts = e.PaintParts And Not DataGridViewPaintParts.Focus
End Sub

C#

private void dgv1_RowPrePaint(object sender,
    DataGridViewRowPrePaintEventArgs e)
{
    e.PaintParts &= ~DataGridViewPaintParts.Focus;
}