Asp.net 在网格视图控件中获取摘要页脚

Question

我有一个网格视图控件：

 <asp:GridView ID="grdView" runat ="server" AutoGenerateColumns ="false" >                      
     <Columns>                                       
        <asp:BoundField  DataField ="Id" HeaderText ="Agreement ID"/>              
        <asp:BoundField DataField ="Balance" HeaderText ="Balance" />
    </Columns>
</asp:GridView>   

背后的代码：

Private Sub form1_Load(sender As Object, e As EventArgs) Handles form1.Load
    Dim agreementManager As AgreementManager = New AgreementManager()
    Dim lstAgr As List(Of Agreement) = agreementManager.GetAll()
    grdView.DataSource = lstAgr
    grdView.DataBind()
End Sub

输出：

然后，我想添加一个带有余额摘要的页脚，如下所示：

有什么想法吗？

提前致谢！！

Answer 1

你可以做到这一点，参考这个解决方案：
http://www.c-sharpcorner.com/UploadFile/satyapriyanayak/dsfsdf/

对于每列的页脚模板：

Dim total As Decimal = dt.AsEnumerable().Sum(Function(row) row.Field(Of Decimal)("Balance"))
grdView.FooterRow.Cells(0).Text = "Balance"
grdView.FooterRow.Cells(0).HorizontalAlign = HorizontalAlign.Right
grdView.FooterRow.Cells(1).Text = total.ToString("Balance")

参考这个例子：ASP.NET gridview footer template