gridview合并单元格

 ///  <summary>   
    ///   合并GridView列中相同的行   
    ///   </summary>   
    ///   <param   name="GridView1">GridView对象</param>   
    ///   <param   name="cellNum">需要合并的列数</param>   
    public static void GroupRows(GridView GridView1, int cellNum)
    {
        int i = 0, rowSpanNum = 1;
        while (i < GridView1.Rows.Count - 1)
        {
            GridViewRow gvr = GridView1.Rows[i];
            for (++i; i < GridView1.Rows.Count; i++)
            {
                GridViewRow gvrNext = GridView1.Rows[i];
                if (gvr.Cells[cellNum].Text == gvrNext.Cells[cellNum].Text)
                {
                    gvrNext.Cells[cellNum].Visible = false;
                    gvrNext.Cells[cellNum + 1].Visible = false;//合并第二列
                    rowSpanNum++;
                }
                else
                {
                    gvr.Cells[cellNum].RowSpan = rowSpanNum;
                    gvr.Cells[cellNum + 1].RowSpan = rowSpanNum;//合并第二列
                    rowSpanNum = 1;
                    break;
                }
                if (i == GridView1.Rows.Count - 1)
                {
                    gvr.Cells[cellNum].RowSpan = rowSpanNum;
                    gvr.Cells[cellNum + 1].RowSpan = rowSpanNum;//合并第二列
                }
            }
        }
    }

根据第一列具有相同的行合并第一，二列具有相同的行。