[SqlException (0x80131904): 在与 SQL Server 建立连接时出现与网络相关的或特定于实例的错误。未找到或无法访问服务器。请验证实例名称是否正确并且 SQL Server 已配置为允许远程连接。 (provider: 命名管道提供程序, error: 40 - 无法打开到 SQL Server 的连接)]
System.Data.ProviderBase.DbConnectionPool.GetConnection(DbConnection owningObject) +428
System.Data.ProviderBase.DbConnectionFactory.GetConnection(DbConnection owningConnection) +65
System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory) +117
System.Data.SqlClient.SqlConnection.Open() +122
Microsoft.Practices.EnterpriseLibrary.Data.Database.GetNewOpenConnection() +137
Microsoft.Practices.EnterpriseLibrary.Data.Database.GetOpenConnection(Boolean disposeInnerConnection) +74
Microsoft.Practices.EnterpriseLibrary.Data.Database.ExecuteReader(DbCommand command) +41
PowerEasy.Framework.Database.DBHelper.ExecuteReader(CommandType commandType, String strCommand, Parameters cmdParams) +157
PowerEasy.Framework.Database.DBHelper.ExecuteReaderSql(String strSql, Parameters cmdParams) +12
PowerEasy.Module.General.DataAccess.UserManage.UsersDal.GetUsersByUserName(String userName) +91
PowerEasy.Module.General.BusinessLogic.UserManage.Users.GetUsersByUserName(String userName) +19
PowerEasy.Foundation.HttpModule.UserSecurityModule.CheckPagePermission(HttpContext context) +75
PowerEasy.Foundation.HttpModule.UserSecurityModule.Application_AcquireRequestState(Object source, EventArgs e) +67
PowerEasy.Foundation.HttpModule.BaseHttpModule.Application_AcquireRequestState_Handle(Object source, EventArgs e) +33
System.Web.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +68
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +75
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