System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternalDbConnectionouterConnection,DbConnectionFactoryconnectionFactory,TaskCompletionSource`1retry,DbConnectionOptionsuserOptions+143

System.Data.ProviderBase.DbConnectionClosed.TryOpenConnectionDbConnectionouterConnection,DbConnectionFactoryconnectionFactory,TaskCompletionSource`1retry,DbConnectionOptionsuserOptions+17

System.Data.SqlClient.SqlConnection.TryOpenInnerTaskCompletionSource`1retry+139

System.Data.SqlClient.SqlConnection.TryOpenTaskCompletionSource`1retry+448

System.Data.SqlClient.SqlConnection.Open+130

NewFolder1.Class1.userStringipkey,Stringrz,Int32cl+154

WebApplication1.api.ProcessRequestHttpContextcontext+499

System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute+814

System.Web.HttpApplication.ExecuteStepImplIExecutionStepstep+132

System.Web.HttpApplication.ExecuteStepIExecutionStepstep,Boolean&completedSynchronously+73

版本信息:Microsoft.NETFramework版本:4.0.30319;ASP.NET版本:4.8.4110.0