datagridview同一列有 按钮 和 文本 交错行显示问题

        Rectangle cellBounds = new Rectangle();

        string value = string.Empty;

        int columnIndex = 0;

        private void dataGridView1_CellPainting(object sender, DataGridViewCellPaintingEventArgs e)

        {

            if (e.RowIndex % 2 == 0&&e.ColumnIndex==0)

            {

                cellBounds = e.CellBounds;

                if (e.Value != null)

                    value = e.Value.ToString();

                columnIndex = e.ColumnIndex;

            }

        }





        private void dataGridView1_RowPostPaint(object sender, DataGridViewRowPostPaintEventArgs e)

        {          

            if (e.RowIndex % 2 == 0)

            {

                SolidBrush br = new SolidBrush(Color.White);

                SolidBrush brString=new SolidBrush(dataGridView1.ForeColor);

                e.Graphics.FillRectangle(br, cellBounds.Location.X - 1, cellBounds.Location.Y - 1, dataGridView1.Columns[columnIndex].Width, dataGridView1.Rows[e.RowIndex].Height);

                e.Graphics.DrawString(value, dataGridView1.DefaultCellStyle.Font, brString, cellBounds.Location.X, cellBounds.Location.Y-20);

            }

        }