合并GridView一列的相同单元格

 1  public  void GroupRows(GridView GridView1, int cellNum)
 2         {
 3             int i = 0, rowSpanNum = 1;
 4             while (i < GridView1.Rows.Count - 1)
 5             {
 6                 GridViewRow gvr = GridView1.Rows[i];
 7                 for (++i; i < GridView1.Rows.Count; i++)
 8                 {
 9                     GridViewRow gvrNext = GridView1.Rows[i];
10                     string s = ((Label)gvr.FindControl("lblid")).Text;
11                     string sNext = ((Label)gvrNext.FindControl("lblid")).Text;
12                     if (s == sNext)
13                     {
14                         gvrNext.Cells[cellNum].Visible = false;
15                         gvrNext.Cells[cellNum-1].Visible = false;
16                         rowSpanNum++;
17                     }
18                     else
19                     {
20                         gvr.Cells[cellNum].RowSpan = rowSpanNum;
21                         gvr.Cells[cellNum-1].RowSpan = rowSpanNum;
22                         rowSpanNum = 1;
23                         break;
24                     }
25                     if (i == GridView1.Rows.Count - 1)
26                     {
27                         gvr.Cells[cellNum].RowSpan = rowSpanNum;
28                         gvr.Cells[cellNum-1].RowSpan = rowSpanNum;
29                     }
30 
31                 }
32             }
33         }