ry,DbConnectionOptionsuserOptions,DbConnectionInternaloldConnection,DbConnectionInternal&connection)+941

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.HttpAppl