SQL server connection failed

[cafassept]

I'm having trouble with my web application developped in ASP.net.I'm actually adding features to it, the previous version is working fine.It's a merchant web site, and when an user have more than one item in the cart, the issue appears.On this case (exemple of two items), this code is called 2 times :\[code\]System.Configuration.Configuration WebConfig = System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration("~");System.Configuration.ConnectionStringSettings connString = WebConfig.ConnectionStrings.ConnectionStrings["ConnectionString"];SqlConnection connection;connection = new SqlConnection(connString.ConnectionString);if (connection.State == ConnectionState.Closed) connection.Open();\[/code\]The first time it pass, but the second I get the error "