GridView Footer页脚统计实现多行

在使用GridView时有时会需要多行显示页脚Footer的统计，下面是一种解决方法，仅仅供各位参考

在GridView的RowCreated事件中添加多行页脚，实例代码如下：

 1         protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
 2         {
 3             if(e.Row.RowType == GridViewRowType.Footer)
 4             {
 5                 Tuple<int, int> sum = IndexStatisticsDal.GetRecordSum(Convert.ToDateTime(ViewState["StartDate"]), Convert.ToDateTime(ViewState["EndDate"]), StatisticTypeEnum.REENTRYICU);
 6                 string resultStr = "&frasl;";
 7                 if (sum.Item2 > 0)
 8                 {
 9                     resultStr = ((double)sum.Item1 / sum.Item2 * 1000).ToString("0.0000") + "‰";
10                 }
11                 TableCellCollection footerRow = e.Row.Cells;
12                 footerRow.Clear();
13                 footerRow.Add(new TableCell());
14                 footerRow[0].Text = "合计";
15                 footerRow[0].Attributes.Add("rowspan", "2");
16                 footerRow.Add(new TableCell());
17                 footerRow[1].Text = sum.Item1.ToString();
18                 footerRow.Add(new TableCell());
19                 footerRow[2].Text = sum.Item2.ToString() + "</th></tr><tr class="C1FooterRow" style="font-size: 14px; font-weight: bold;">";
20                 footerRow.Add(new TableCell());
21                 footerRow[3].Text = "非预期重返重症医学科率";
22                 footerRow.Add(new TableCell());
23                 footerRow[4].Text = resultStr;
24             }
25         }