[SqlException（0x80131904）：无法打开登录请求的数据库“aspnetdb” . 登录失败 . 用户'IIS APPPOOL \ default'登录失败 . . ] System.Data.SqlClient.SqlInternalConnection.OnError（SqlException异常，Boolean breakConnection，Action'1 wrapCloseInAction）6676046 System.Data.SqlClient.TdsParser.ThrowExceptionAndWarning（TdsParserStateObject stateObj，Boolean callerHasConnectionLock， Boolean asyncClose）810 System.Data.SqlClient.TdsParser.TryRun（RunBehavior runBehavior，SqlCommand cmdHandler，SqlDataReader dataStream，BulkCopySimpleResultSet bulkCopyHandler，TdsParserStateObject stateObj，Boolean＆dataReady）4403 System.Data.SqlClient.TdsParser.Run（RunBehavior runBehavior，SqlCommand cmdHandler，SqlDataReader dataStream，BulkCopySimpleResultSet bulkCopyHandler，TdsParserStateObject stateObj）84 System.Data.SqlClient.SqlInternalConnectionTds.CompleteLogin（Boolean enlistOK）55 System.Data.SqlClient.SqlInternalConnectionTds.AttemptOneLogin（ServerInfo serverInfo，String newPassword，SecureString newSecurePassword，Boolean ignoreSniOpenTimeout，TimeoutTimer timeout， Boolean withFailover）368 System.Data.SqlClient.SqlInternalConnectionTds.LoginNoFailover（ServerInfo serverInfo，String newPassword，SecureString newSecurePassword，Boolean redirectedUserInstance，SqlConnectionString connectionOptions，SqlCredential credential，TimeoutTimer timeout）6704814 System.Data.SqlClient.SqlInternalConnectionTds.OpenLoginEnlist（TimeoutTimer timeout，SqlConnectionString connectionOptions，SqlCredential credential，String newPassword，SecureString newSecurePassword，Boolean redirectedUserInstance）6705315 System.Data.SqlClient.SqlInternalConnectionTds..ctor（DbConnectionPoolIdentity identity，SqlConnectionString connectionOptions，SqlCredential credential，Object providerInfo，String newPassword，SecureString newSecurePassword，Boolean redirectedUserInstance，SqlConnectionString userConnectionOptions） 610 System.Data.SqlClient.SqlConnectionFactory.CreateConnection（DbConnectionOptions选项，DbConnectionPoolKey poolKey，Object poolGroupProviderInfo，DbConnecti onPool pool，DbConnection owningConnection，DbConnectionOptions userOptions）1049 System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection（DbConnectionPool池，DbConnectionOptions选项，DbConnectionPoolKey poolKey，DbConnectionOptions userOptions）74 System.Data.ProviderBase.DbConnectionPool.CreateObject（DbConnectionOptions userOptions）6707883 System.Data .ProviderBase.DbConnectionPool.UserCreateRequest（DbConnectionOptions userOptions）78 System.Data.ProviderBase.DbConnectionPool.TryGetConnection（DbConnection owningObject，UInt32 waitForMultipleObjectsTimeout，Boolean allowCreate，Boolean onlyOneCheckConnection，DbConnectionOptions userOptions，DbConnectionInternal＆connection）2192 System.Data.ProviderBase.DbConnectionPool.TryGetConnection（ DbConnection owningObject，TaskCompletionSource'1 retry，DbConnectionOptions userOptions，DbConnectionInternal＆connection）116 System.Data.ProviderBase.DbConnectionFactory.TryGetConnection（DbConnection owningConnection，TaskCo） mpletionSource'1 retry，DbConnectionOptions userOptions，DbConnectionInternal＆connection）1012 System.Data.ProviderBase.DbConnectionClosed.TryOpenConnection（DbConnection outerConnection，DbConnectionFactory connectionFactory，TaskCompletionSource'1 retry，DbConnectionOptions userOptions）6712511 System.Data.SqlClient.SqlConnection.TryOpen（TaskCompletionSource'1重试）152 System.Data.SqlClient.SqlConnection.Open（）229 System.Web.DataAccess.SqlConnectionHolder.Open（HttpContext context，Boolean revertImpersonate）150 System.Web.DataAccess.SqlConnectionHelper.GetConnection（String connectionString，Boolean revertImpersonation）4876314 System .Web.Security.SqlRoleProvider.GetUsersInRole（String roleName）1440 System.Web.Security.Roles.GetUsersInRole（String roleName）335 mykladr.SiteMaster.Page_Init（Object sender，EventArgs e）499 System.Web.UI.Control.InitRecursive（ Control namingContainer）186 System.Web.UI.Control.InitRecursive（Control namingContainer）421 System.Web.UI.Page.Proc essRequestMain（布尔includeStagesBeforeAsyncPoint，布尔includeStagesAfterAsyncPoint）2098
我在web.config中的连接字符串是：
<add name="aspnetdbConnectionString" connectionString="Data Source=kit-pc\;Initial Catalog=aspnetdb;Integrated Security=True"
providerName="System.Data.SqlClient" />
我坚持这个问题，但是我看到了一些主题，我找不到答案 .