gridview 求和
NAM_FACT COD_DOLA UNPAID
A CNY 100
B CNY 200
C USD 300
D USD 400
E CNY 500
CNY 800
USD 700

大家好，有问题请大家帮忙了，上面这个示例蓝色部分是已查询后在gridview中实现的，现在我想要加上下面两行求和的部分（注意哦是分组求和的），我想通过sql的方法来实现，不知道怎么做，请大家帮忙了，最好也能给我一个代码的例子，谢谢了！

[解决办法]
GridView的Group显示，看这里
http://blog.csdn.net/downmoon/archive/2008/09/14/2832007.aspx
http://www.cnblogs.com/downmoon/archive/2008/08/26/1276538.html
[解决办法]
楼主意思是在原来的记录基础上增加 分组求和的记录吧！
[解决办法]
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowIndex >= 0)
{
sum += Convert.ToDouble(e.Row.Cells[2].Text);
}
else if (e.Row.RowType == DataControlRowType.Footer)
{

}
}
或循环gridview，判断值，统计
[解决办法]

C# code

 
  protected void gvService_RowDataBound(object sender, GridViewRowEventArgs e) 
   { 
     if (gvService.EditIndex == -1) 
     { 
       if (e.Row.RowType == DataControlRowType.DataRow) 
       { 
         string accountname = ((Label)e.Row.Cells[7].FindControl("Label5")).Text; 
         double money = System.Convert.ToDouble(((Label)e.Row.Cells[5].FindControl("Label3")).Text); 
         double yjsum = 0.00; 
         double sjsum = 0.00; 
         double zssum = 0.00; 
         if (e.Row.RowIndex == 0) 
         { 
           if (accountname == "应收款项") 
           { 
             ViewState.Add("YjSumMoney", money); 
             ViewState.Add("SjSumMoney", 0.00); 
             ViewState.Add("ZsSumMoney", 0.00); 
           } 
           else if (accountname == "实收款项") 
           { 
             ViewState.Add("YjSumMoney", 0.00); 
             ViewState.Add("SjSumMoney", money); 
             ViewState.Add("ZsSumMoney", 0.00); 
           } 
           else 
           { 
             ViewState.Add("YjSumMoney", 0.00); 
             ViewState.Add("SjSumMoney", 0.00); 
             ViewState.Add("ZsSumMoney", money); 
           } 
         } 
         else 
         { 
           yjsum = System.Convert.ToDouble(ViewState["YjSumMoney"]);  
 
           sjsum = System.Convert.ToDouble(ViewState["SjSumMoney"]); 
           zssum = System.Convert.ToDouble(ViewState["ZsSumMoney"]); 
         } 
         if (accountname == "应收款项") 
         { 
           yjsum += money; 
         } 
         else if (accountname == "实收款项") 
         { 
           sjsum += money; 
         } 
         else 
         { 
           zssum += money; 
         } 
         ViewState["YjSumMoney"] = yjsum; 
         ViewState["SjSumMoney"] = sjsum; 
         ViewState["ZsSumMoney"] = zssum; 
       } 
       if (e.Row.RowType == DataControlRowType.Footer) 
       { 
         ((Label)e.Row.Cells[5].FindControl("Label4")).Text = System.Convert.ToDouble(ViewState["YjSumMoney"]).ToString("0.00"); 
         ((Label)e.Row.Cells[5].FindControl("Label6")).Text = System.Convert.ToDouble(ViewState["SjSumMoney"]).ToString("0.00"); 
         ((Label)e.Row.Cells[5].FindControl("Label8")).Text = System.Convert.ToDouble(ViewState["ZsSumMoney"]).ToString("0.00"); 
         tbYJMoney.Text = ((Label)e.Row.Cells[5].FindControl("Label4")).Text; 
         tbSJMoney.Text = ((Label)e.Row.Cells[5].FindControl("Label6")).Text; 
         tbZSMoney.Text = ((Label)e.Row.Cells[5].FindControl("Label8")).Text; 
         decimal yjmoney = System.Convert.ToDecimal(tbYJMoney.Text); 
         decimal sjmoney = System.Convert.ToDecimal(tbSJMoney.Text); 
         tbQKMoney.Text = System.Convert.ToString(yjmoney - sjmoney); 
         if (yjmoney - sjmoney  <= 0) 
         { 
           tbQKMoney.Text = "0.00"; 
           tbMoney.Text = System.Convert.ToString(System.Convert.ToDecimal(tbZSMoney.Text) + System.Convert.ToDecimal(tbSJMoney.Text) - System.Convert.ToDecimal(tbXFMoney.Text)); 
         } 
         else 
         { 
           tbMoney.Text = System.Convert.ToString(System.Convert.ToDecimal(tbSJMoney.Text) - System.Convert.ToDecimal(tbXFMoney.Text)); 
         } 
         MUpdate(); 
       } 
     } 
   }