Mega Code Archive
The method adds an output parameter to the SqlCommand object
<![CDATA[
File: GetTotals.sql
CREATE PROCEDURE dbo.GetTotals
(
@SumTotals Money OUTPUT
)
AS
SELECT @SumTotals = SUM(Totals) FROM Products
File: App_Code\Product.cs
using System;
using System.Data;
using System.Data.SqlClient;
using System.Web.Configuration;
using System.Collections.Generic;
public class Product
{
private static readonly string _connectionString;
private string _title;
private decimal _boxOfficeTotals;
public string Title
{
get { return _title; }
set { _title = value; }
}
public decimal Totals
{
get { return _boxOfficeTotals; }
set { _boxOfficeTotals = value; }
}
public List<Product> GetPrice(out decimal SumTotals)
{
List<Product> results = new List<Product>();
SqlConnection con = new SqlConnection(_connectionString);
SqlCommand cmd = new SqlCommand("GetTotals", con);
cmd.CommandType = CommandType.StoredProcedure;
cmd.Parameters.Add("@SumTotals", SqlDbType.Money).Direction = ParameterDirection.Output;
using (con)
{
con.Open();
SqlDataReader reader = cmd.ExecuteReader();
while (reader.Read())
{
Product newProduct = new Product();
newProduct.Title = (string)reader["Title"];
newProduct.Totals = (decimal)reader["Totals"];
results.Add(newProduct);
}
reader.Close();
SumTotals = (decimal)cmd.Parameters["@SumTotals"].Value;
}
return results;
} static Product()
{
_connectionString = WebConfigurationManager.ConnectionStrings["Products"].ConnectionString;
}
}
File: Web.config
<configuration>
<connectionStrings>
<add name="Products"
connectionString="Data Source=.\SQLEXPRESS;
AttachDbFilename=|DataDirectory|MyDatabase.mdf;Integrated Security=True;User Instance=True" />
</connectionStrings>
</configuration>
File: ShowProduct.aspx
<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
protected void srcProducts_Selected(object sender, ObjectDataSourceStatusEventArgs e)
{
decimal sum = (decimal)e.OutputParameters["SumTotals"];
lblSum.Text = sum.ToString("c");
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>Show Product</title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:GridView
id="grdProducts"
DataSourceID="srcProducts"
AutoGenerateColumns="false"
Runat="server">
<Columns>
<asp:BoundField DataField="Title" HeaderText="Title" />
<asp:BoundField
DataField="Totals"
HeaderText="Box Office"
HtmlEncode="false"
DataFormatString="{0:c}" />
</Columns>
</asp:GridView>
<br />
Sum of Box Office Totals:
<asp:Label
id="lblSum"
Runat="server" />
<asp:ObjectDataSource
id="srcProducts"
TypeName="Product"
SelectMethod="GetPrice"
Runat="server" OnSelected="srcProducts_Selected">
<SelectParameters>
<asp:Parameter
Name="SumTotals"
Type="Decimal"
Direction="Output" />
</SelectParameters>
</asp:ObjectDataSource>
</div>
</form>
</body>
</html>
]]>