MS SQL server 2005 & 2008 connection string :
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con.ConnectionString = "Data Source=Domain.com;Initial Catalog=hostingUser_DBname;user id=user;password=pass";
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connectionString="Data Source=(local);Initial Catalog=hostingUser_DBname;User ID=USER;Password=PASS; Integrated Security=True;Trusted_Connection=False;" providerName="System.Data.SqlClient"
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providerName="System.Data.SqlClient" />