问题：DataGridViewButtonColumn()在datagridview中创建按钮列，如何设置按钮的背景颜色（不是单元格的背景颜色）。

回答：可以在dataGridView1_CellPainting事件里面处理。

 

private void dataGridView1_CellPainting(object sender, DataGridViewCellPaintingEventArgs e){      if (e.ColumnIndex == 0)//索引0      {           e.Handled = true;            using (SolidBrush brush = new SolidBrush(Color.Red))           {                e.Graphics.FillRectangle(brush, e.CellBounds);           }           ControlPaint.DrawBorder(e.Graphics, e.CellBounds, Color.Yellow, ButtonBorderStyle.Outset);      }      if (e.ColumnIndex == 1)//索引1      {           e.Handled = true;            using (SolidBrush brush = new SolidBrush(Color.BlueViolet))           {                e.Graphics.FillRectangle(brush, e.CellBounds);           }           ControlPaint.DrawBorder(e.Graphics, e.CellBounds, Color.Yellow, ButtonBorderStyle.Outset);      }}

效果：