Mega Code Archive
Handling Method Errors
<![CDATA[
<%@ 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_Inserted(object sender, ObjectDataSourceStatusEventArgs e)
{
if (e.Exception != null)
{
e.ExceptionHandled = true;
lblError.Text = "Could not insert Product";
}
}
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head id="Head1" runat="server">
</head>
<body>
<form id="form1" runat="server">
<asp:Label
id="lblError"
EnableViewState="false"
CssClass="error"
Runat="server" />
<h1>Insert Product</h1>
<asp:DetailsView
id="dtlProducts"
DataSourceID="srcProducts"
DefaultMode="Insert"
AutoGenerateInsertButton="true"
AutoGenerateRows="false"
CssClass="insertForm"
GridLines="None"
Runat="server">
<Fields>
<asp:BoundField
DataField="Title"
HeaderText="Title:"/>
<asp:BoundField
DataField="Director"
HeaderText="Director:" />
</Fields>
</asp:DetailsView>
<asp:ObjectDataSource
id="srcProducts"
TypeName="InsertProduct"
InsertMethod="Insert"
Runat="server"
OnInserted="srcProducts_Inserted" />
</div>
</form>
</body>
</html>
File: InsertProduct.cs
using System;
using System.Web;
using System.Data;
using System.Data.SqlClient;
using System.Web.Configuration;
public class InsertProduct
{
private static readonly string _conString;
public static SqlDataReader GetProducts()
{
SqlConnection con = new SqlConnection(_conString);
SqlCommand cmd = new SqlCommand();
cmd.Connection = con;
cmd.CommandText = "SELECT Id,Title,Director FROM Products";
con.Open();
return cmd.ExecuteReader(CommandBehavior.CloseConnection);
}
public static void Insert(string title, string director)
{
SqlConnection con = new SqlConnection(_conString);
SqlCommand cmd = new SqlCommand();
cmd.Connection = con;
cmd.CommandText = "INSERT Products (Title,Director)" + " VALUES (@Title,@Director)";
cmd.Parameters.AddWithValue("@Title", title);
cmd.Parameters.AddWithValue("@Director", director);
using (con)
{
con.Open();
cmd.ExecuteNonQuery();
}
}
static InsertProduct()
{
_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>
]]>