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 == )//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 == )//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：