if(dg.Items[i].Cells[iRow].Text == "没完成")
     {
      dg.Items[i].BackColor=System.Drawing.Color.FromArgb(144,238,255);
     }
     if(dg.Items[i].Cells[iRow].Text == "已完成")
     {
      dg.Items[i].BackColor=System.Drawing.Color.LightGreen;
     } 
 
转载于:https://www.cnblogs.com/csj007523/archive/2008/07/24/1250598.html