Displaying Column Summaries
<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<script runat="server">
private decimal _totals = 0;
protected void grdProducts_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
decimal totals = (decimal)DataBinder.Eval(e.Row.DataItem, "BoxOfficeTotals");
_totals += totals;
}
if (e.Row.RowType == DataControlRowType.Footer)
{
Label lblSummary = (Label)e.Row.FindControl("lblSummary");
lblSummary.Text = String.Format("Total: {0:c}", _totals);
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>Summary Column</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView
id="grdProducts"
DataSourceID="srcProducts"
OnRowDataBound="grdProducts_RowDataBound"
AutoGenerateColumns="false"
ShowFooter="true"
Runat="server">
<Columns>
<asp:BoundField
DataField="Title"
HeaderText="Title" />
<asp:TemplateField HeaderText="Box Office Totals">
<ItemTemplate>
<%# Eval("BoxOfficeTotals", "{0:c}") %>
</ItemTemplate>
<FooterTemplate>
<asp:Label
id="lblSummary"
Runat="server" />
</FooterTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
<asp:SqlDataSource
id="srcProducts"
ConnectionString="<%$ ConnectionStrings:Products %>"
SelectCommand="SELECT * FROM Products"
Runat="server" />
</div>
</form>
</body>
</html>
File: Web.config
<configuration>
<connectionStrings>
<add name="Products"
connectionString="Data Source=.\SQLEXPRESS;
AttachDbFilename=|DataDirectory|MyDatabase.mdf;Integrated Security=True;User Instance=True" />
</connectionStrings>
</configuration>
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