จะใส่รูปให้ RowHeader ของ dataGrid ได้ไหมครับ ??               

void dataGridView1_RowPostPaint ( object sender , DataGridViewRowPostPaintEventArgs e )
        {
            Image img1 = Image.FromFile( @"c:\abc.jpg" );
            int rowWidth = ( sender as DataGridView ).RowHeadersWidth;
            e.Graphics.DrawImage
                ( 
                    img1 , 
                    e.RowBounds.Left , 
                    e.RowBounds.Top , 
                    rowWidth , 
                    e.RowBounds.Height 
                );
        }