อยากทราบ โค้ดสำหรับ connect database SQL Server 2008 ด้วย VS2010 ค่ะ (Web App)

<connectionStrings>
		<add name="conn" connectionString="Data Source=.\SQLEXPRESS;Initial Catalog=Shop;Persist Security Info=True;User ID=sa;Password=123456" providerName="System.Data.SqlClient"/>

	</connectionStrings>

using System.Data.SqlClient;

SqlConnection db = new SqlConnection(ConfigurationManager.ConnectionStrings["conn"].ToString());

db.Open();