Question

我目前在使用Microsoft Visual Studio 2015的MVC平台上，每当我尝试连接到数据库时，就会发生这种情况

PM> Scaffold-DbContext "Server=(localdb)\MSSQLLocalDB;Database=DB;Trusted_Connection=True;" Microsoft.EntityFrameworkCore.SqlServer -OutputDir Models

System.Data.SqlClient.SqlException：无法打开数据库＆＃34; DB＆＃34;登录请求。登录失败。用户＆＃39; PC＆＃39;登录失败。在System.Data.SqlClient.SqlInternalConnectionTds..ctor（DbConnectionPoolIdentity标识，SqlConnectionString connectionOptions，Object providerInfo，Boolean redirectedUserInstance，SqlConnectionString userConnectionOptions，SessionData reconnectSessionData，Boolean applyTransientFaultHandling）在System.Data.SqlClient.SqlConnectionFactory.CreateConnection（DbConnectionOptions选项，DbConnectionPoolKey poolKey，Object poolGroupProviderInfo，DbConnectionPool池，DbConnection owningConnection，DbConnectionOptions userOptions）在System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection（DbConnectionPool池，DbConnection owningObject，DbConnectionOptions选项，DbConnectionPoolKey poolKey，DbConnectionOptions userOptions）在System.Data.ProviderBase.DbConnectionPool.CreateObject（DbConnection owningObject，DbConnectionOptions userOptions，DbConnectionInternal oldConnection）在System.Data.ProviderBase.DbConnectionPool.UserCreateRequest（DbConnection owningObject，DbConnectionOptions userOptions，DbConnectionInternal oldConnection）在System.Data.ProviderBase.DbConnectionPool.TryGetConnection（DbConnection owningObject，UInt32 waitForMultipleObjectsTimeout，Boolean allowCreate，Boolean onlyOneCheckConnection，DbConnectionOptions userOptions，DbConnectionInternal＆amp; connection） at System.Data.ProviderBase.DbConnectionPool.TryGetConnection（DbConnection owningObject，TaskCompletionSource 1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection) at System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource 1 retry，DbConnectionOptions userOptions，DbConnectionInternal oldConnection，DbConnectionInternal＆amp; connection）在System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal（DbConnection outerConnection，DbConnectionFactory connectionFactory，TaskCompletionSource 1 retry, DbConnectionOptions userOptions) at System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource 1重试）在System.Data.SqlClient.SqlConnection.Open（）在Microsoft.EntityFrameworkCore.Scaffolding.Internal.SqlServerDatabaseModelFactory.Create（String connectionString，TableSelectionSet tableSelectionSet）在Microsoft.EntityFrameworkCore.Scaffolding.RelationalScaffoldingModelFactory.Create（String connectionString，TableSelectionSet tableSelectionSet）在Microsoft.EntityFrameworkCore.Scaffolding.Internal.SqlServerScaffoldingModelFactory.Create（String connectionString，TableSelectionSet tableSelectionSet）在Microsoft.EntityFrameworkCore.Scaffolding.Internal.ReverseEngineeringGenerator.GetMetadataModel（ReverseEngineeringConfiguration配置）在Microsoft.EntityFrameworkCore.Scaffolding.Internal.ReverseEngineeringGenerator.GenerateAsync（ReverseEngineeringConfiguration配置，CancellationToken cancellationToken） at Microsoft.EntityFrameworkCore.Design.Internal.DatabaseOperations.ScaffoldContextAsync（String provider，String connectionString，String outputDir，String dbContextClassName，IEnumerable 1 schemas, IEnumerable 1个表，Boolean useDataAnnotations，Boolean overwriteFiles，CancellationToken cancellationToken）在Microsoft.EntityFrameworkCore.Design.OperationExecutor.d__22.MoveNext（） at System.Collections.Generic.EnumerableHelpers.ToArray [T]（IEnumerable 1 source, Int32& length) at System.Collections.Generic.EnumerableHelpers.ToArray[T](IEnumerable 1 source）在System.Linq.Enumerable.ToArray [TSource]（IEnumerable 1 source) at Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.<>c__DisplayClass4_0 1.b__0（）在Microsoft.EntityFrameworkCore.Design.OperationExecutor.OperationBase.Execute（Action action） ClientConnectionId：39d773a8-7fba-451B-b86b-d48b481cfe9a 错误号码：4060，状态：1，等级：11 无法打开数据库＆＃34; FacilityDB1＆＃34;登录请求。登录失败。用户登录失败＆＃39; PC＆＃39;。**

任何帮助表示感谢。

Answer 1

您的问题可能已经发生，因为您可能没有名为PC的用户，或者没有为数据库中的用户PC分配访问权限

1）确保将用户添加到SQL Server数据库，并为用户提供对数据库的访问权限。

2）同时在IIS下的同一用户“PC机”下运行您的应用程序，并确保为其键入正确的密码。您可以从“应用程序池”更改它选择您的应用程序当前运行的池，并从“应用程序标识”中将您的用户更改为您之前创建的用户（步骤1）中的“PC”案“

如果它不起作用，请发表评论，我很乐意更新我的答案

MVC SqlServer数据库登录失败

1 个答案: