后台修改GridView每列的宽度

GridView1.HeaderRow.Cells[0].Width = 20;
GridView1.HeaderRow.Cells[1].Width = 140;
GridView1.HeaderRow.Cells[2].Width = 40;
GridView1.HeaderRow.Cells[3].Width = 40;
GridView1.HeaderRow.Cells[4].Width = 250;
GridView1.HeaderRow.Cells[6].Width = 40;