winform中修改DataGridView列头背景图片

Question

winform中修改DataGridView列头背景图片  这个怎么实现的……
高手请帮忙解决一下吧，谢啦……

Answer 1

cellpainting事件中可以绘制样式或底图

Answer 2

CellPainting事件。
void dgv_CellPainting(object sender, DataGridViewCellPaintingEventArgs e)
  {
  if (e.RowIndex > -1 && e.ColumnIndex > -1)
  {
  e.PaintBackground(e.CellBounds, false);
  e.Graphics.FillEllipse(Brushes.Red, e.CellBounds);
  e.Graphics.DrawString(e.RowIndex.ToString() + e.ColumnIndex.ToString(), this.Font, Brushes.Black, new PointF(e.CellBounds.X + 8, e.CellBounds.Y + 8));
  e.Handled = true;
  }
  }

Answer 3

详细做法：http://www.cnblogs.com/fmgs/archive/2011/01/01/1923713.html

Answer 4

private void dataGridView1_CellPainting(object sender,
System.Windows.Forms.DataGridViewCellPaintingEventArgs e)
{
    if (this.dataGridView1.Columns["ContactName"].Index ==
        e.ColumnIndex && e.RowIndex >= 0)
    {
        Rectangle newRect = new Rectangle(e.CellBounds.X + 1,
            e.CellBounds.Y + 1, e.CellBounds.Width - 4,
            e.CellBounds.Height - 4);        using (
            Brush gridBrush = new SolidBrush(this.dataGridView1.GridColor),
            backColorBrush = new SolidBrush(e.CellStyle.BackColor))
        {
            using (Pen gridLinePen = new Pen(gridBrush))
            {
                // Erase the cell.
                e.Graphics.FillRectangle(backColorBrush, e.CellBounds);                // Draw the grid lines (only the right and bottom lines; 
                // DataGridView takes care of the others).
                e.Graphics.DrawLine(gridLinePen, e.CellBounds.Left,
                    e.CellBounds.Bottom - 1, e.CellBounds.Right - 1,
                    e.CellBounds.Bottom - 1);
                e.Graphics.DrawLine(gridLinePen, e.CellBounds.Right - 1,
                    e.CellBounds.Top, e.CellBounds.Right - 1,
                    e.CellBounds.Bottom);                // Draw the inset highlight box.
                e.Graphics.DrawRectangle(Pens.Blue, newRect);                // Draw the text content of the cell, ignoring alignment. 
                if (e.Value != null)
                {
                    e.Graphics.DrawString((String)e.Value, e.CellStyle.Font,
                        Brushes.Crimson, e.CellBounds.X + 2,
                        e.CellBounds.Y + 2, StringFormat.GenericDefault);
                }
                e.Handled = true;
            }
        }
    }
}