asp.net 合并GridView中某列相同信息的行（单元格）

/// <summary> 
/// 合并GridView中某列相同信息的行（单元格） 
/// </summary> 
/// <param name="GridView1">GridView</param> 
/// <param name="cellNum">第几列</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; 
rowSpanNum++; 
} 
else 
{ 
gvr.Cells[cellNum].RowSpan = rowSpanNum; 
rowSpanNum = 1; 
break; 
} 

if (i == GridView1.Rows.Count - 1) 
{ 
gvr.Cells[cellNum].RowSpan = rowSpanNum; 
} 
} 
} 
} 
 

如果多列要求合并时，可作适当修改。 
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