private void dgvCaozuoList_CellPainting(object sender, DataGridViewCellPaintingEventArgs e)

        {

            if (e.RowIndex == -1)//标题行

            {

                int X = e.CellBounds.X;

                int Y = e.CellBounds.Y;

                int W = e.CellBounds.Width;

                int H = e.CellBounds.Height;

                Pen blackPen = new Pen(Color.FromArgb(195, 195, 195));//边框颜色

                System.Drawing.Image image = Properties.Resources.tableheadbg;//背景图片

                TextureBrush tBrush = new TextureBrush(image);

                e.Graphics.FillRectangle(tBrush, new System.Drawing.Rectangle(X, Y, W, H));

                if (e.ColumnIndex == 0)

                    e.Graphics.DrawRectangle(blackPen, new System.Drawing.Rectangle(X, Y + 1, W - 1, H - 2));

                else

                    e.Graphics.DrawRectangle(blackPen, new System.Drawing.Rectangle(X - 1, Y + 1, W, H - 2));

                e.PaintContent(e.CellBounds);

                e.Handled = true;

            }

        }