System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnectionouterConnection,DbConnectionFactoryconnectionFactory,TaskCompletionSource`1retry,DbConnectionOptionsuserOptions)+143
System.Data.ProviderBase.DbConnectionClosed.TryOpenConnection(DbConnectionouterConnection,DbConnectionFactoryconnectionFactory,TaskCompletionSource`1retry,DbConnectionOptionsuserOptions)+17
System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource`1retry)+139
System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1retry)+448
System.Data.SqlClient.SqlConnection.Open()+130
NewFolder1.Class1.user(Stringipkey,Stringrz,Int32cl)+154
WebApplication1.api.ProcessRequest(HttpContextcontext)+499
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()+814