Unable to Connect to Sql Server using SqlServer class?

Question

Hi! all,

SqlServer server = SqlServer.CurrentServer;
try
{
    server.Connect();
}
catch (System.Exception ex)
{
    //Response.Redirect("Error.aspx?errorPassCode=" + 2002);
    Response.Redirect(String.Format("error.aspx?errormsg={0}&stacktrace={1}",
            Server.UrlEncode(ex.Message), Server.UrlEncode(ex.StackTrace)));
}

SqlDatabaseCollection databases = server.Databases;
server.Disconnect();

I am getting the exception at: server.Connect();

Exception is:

Retrieving the COM class factory for component with CLSID {10020200-E260-11CF-AE68-00AA004A34D5} failed due to the following error: 80040154.

Please help me out...