无法打开登录所请求的数据库 "cdn_sql"。登录失败。
用户 'sa' 登录失败。
说明: 执行当前 Web 请求期间，出现未经处理的异常。请检查堆栈跟踪信息，以了解有关该错误以及代码中导致错误的出处的详细信息。
异常详细信息: System.Data.SqlClient.SqlException: 无法打开登录所请求的数据库 "cdn_sql"。登录失败。
用户 'sa' 登录失败。
源错误:
执行当前 Web 请求期间生成了未经处理的异常。可以使用下面的异常堆栈跟踪信息确定有关异常原因和发生位置的信息。
堆栈跟踪:
[SqlException (0x80131904): 无法打开登录所请求的数据库 "cdn_sql"。登录失败。
用户 'sa' 登录失败。]
System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& connection) +1307
System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection) +108
System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource`1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection) +941
System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) +143
System.Data.ProviderBase.DbConnectionClosed.TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) +17
System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource`1 retry) +139
System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry) +448
System.Data.SqlClient.SqlConnection.Open() +130
NewFolder1.Class1.user(String ipkey, String rz, Int32 cl) +154
WebApplication1.api.ProcessRequest(HttpContext context) +499
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +814
System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +132
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +73
版本信息: Microsoft .NET Framework 版本:4.0.30319; ASP.NET 版本:4.8.4110.0