Why is this code not running

Hi,
I am trying to run a sample code to see the output. However my code is giving me error. The error is at the conn.open code. Any help is appreciated. Thanks.
 
CODE:
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
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