Mega Code Archive
Handling the Object Creating Event
<![CDATA[
File: ProductsByCategory.cs
using System;
using System.Web;
using System.Data;
using System.Data.SqlClient;
using System.Web.Configuration;
public class ProductsByCategory
{
private readonly string _conString;
private readonly string _ProductCategory;
public SqlDataReader GetProducts()
{
SqlConnection con = new SqlConnection(_conString);
SqlCommand cmd = new SqlCommand();
cmd.Connection = con;
cmd.CommandText = "SELECT Title,Director,DateReleased FROM Products"
+ " JOIN ProductCategories ON Products.CategoryId=ProductCategories.Id"
+ " WHERE ProductCategories.Name=@CategoryName";
cmd.Parameters.AddWithValue("@CategoryName", _ProductCategory);
con.Open();
return cmd.ExecuteReader(CommandBehavior.CloseConnection);
}
public ProductsByCategory(string ProductCategory)
{
_ProductCategory = ProductCategory;
_conString = 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: Default.aspx
<%@ Page Language="C#" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
<script runat="server">
protected void srcProducts_ObjectCreating(object sender, ObjectDataSourceEventArgs e)
{
ProductsByCategory Products = new ProductsByCategory("Adventure");
e.ObjectInstance = Products;
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
<title>Adventure Products</title>
</head>
<body>
<form id="form1" runat="server">
<asp:GridView
id="grdProducts"
DataSourceID="srcProducts"
Runat="server" />
<asp:ObjectDataSource
id="srcProducts"
TypeName="ProductsByCategory"
SelectMethod="GetProducts"
OnObjectCreating="srcProducts_ObjectCreating"
Runat="server" />
</div>
</form>
</body>
</html>
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