System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnectionowningConnection,TaskCompletionSource`1retry,DbConnectionOptionsuserOptions,DbConnectionInternaloldConnection,DbConnectionInternalconnection)+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.Css1.user(Stringipkey,Stringr,Int32cl)+154
WebApplication1.api.ProcessRequest(HttpConcon)+498
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()+814
System.Web.HttpApplication.ExecuteStepImpl(IExecutionStepstep)+132
System.Web.HttpApplication.ExecuteStep(IExecutionStepstep,BooleanpletedSynchronously)+73
版本信息Microsoft.NETFramework版本4.0.30319ASP.NET版本4.8.4110.0