即使EF可以成功连接，Asp.Net标识也无法连接到数据库_.net_Entity Framework_Asp.net Identity_Console Application

即使EF可以成功连接，Asp.Net标识也无法连接到数据库

.net entity-framework

即使EF可以成功连接，Asp.Net标识也无法连接到数据库,.net,entity-framework,asp.net-identity,console-application,.net,Entity Framework,Asp.net Identity,Console Application,控制台应用程序中存在一个非常奇怪的问题。EntityFramework可以成功连接而不会出现问题，但ASP.NET Identity v2会失败，并出现SqlException。这是我的密码： using Microsoft.AspNet.Identity; using Microsoft.AspNet.Identity.EntityFramework; using System; namespace TestConsoleApp { class Program {

控制台应用程序中存在一个非常奇怪的问题。EntityFramework可以成功连接而不会出现问题，但ASP.NET Identity v2会失败，并出现SqlException。这是我的密码：

using Microsoft.AspNet.Identity;
using Microsoft.AspNet.Identity.EntityFramework;
using System;

namespace TestConsoleApp
{
    class Program
    {
        static void Main(string[] args)
        {
            // DbContext ctx = new DbContext("DefaultConnectionString");
            // ctx.Database.Connection.Open();



            var username = "mrclan";
            var password = "ap4595821";

            var userStore = new UserStore<IdentityUser>();
            var userManager = new UserManager<IdentityUser>(userStore);

            var creationResult = userManager.Create(new IdentityUser(username), password);
            Console.WriteLine(creationResult.Succeeded);
        }
    }
}

使用Microsoft.AspNet.Identity；
使用Microsoft.AspNet.Identity.EntityFramework；
使用制度；
命名空间TestConsoleApp
{
班级计划
{
静态void Main（字符串[]参数）
{
//DbContext ctx=新的DbContext（“DefaultConnectionString”）；
//ctx.Database.Connection.Open（）；
var username=“mrclan”；
var password=“ap4595821”；
var userStore=new userStore（）；
var userManager=newusermanager（userStore）；
var creationResult=userManager.Create（新标识用户（用户名）、密码）；
Console.WriteLine（creationResult.successed）；
}
}
}

前2条注释行用于测试连接字符串，它成功地打开了到数据库的连接

但是Identity API无法执行此操作，并且在此行抛出SqlException异常：

var creationResult=userManager.Create（新标识用户（用户名）、密码）
例外消息是：

建立与SQL Server的连接时发生与网络相关或特定于实例的错误。找不到服务器或无法访问服务器。验证实例名称是否正确，以及SQL Server是否配置为允许远程连接。（提供程序：SQL网络接口，错误：50-发生本地数据库运行时错误。指定的LocalDB实例不存在

app.config文件如下所示：

<?xml version="1.0" encoding="utf-8"?> <configuration> <configSections> <section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" /> </configSections> <connectionStrings> <add name="DefaultConnectionString" connectionString="Server=DP-FJ;Database=testDb;user id=sa;password=sa;" providerName="System.Data.SqlClient" /> </connectionStrings> <startup> <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.2" /> </startup> <entityFramework> <defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework"> <parameters> <parameter value="v13.0" /> </parameters> </defaultConnectionFactory> <providers> <provider invariantName="System.Data.SqlClient" type="System.Data.Entity.SqlServer.SqlProviderServices, EntityFramework.SqlServer" /> </providers> </entityFramework> </configuration>

如果有任何帮助，完整堆栈跟踪如下所示：发生System.Data.SqlClient.SqlException HResult=0x80131904 Message=建立与SQL Server的连接时发生与网络相关或特定于实例的错误。找不到或无法访问该服务器。请验证实例名称是否正确，以及SQL Server是否配置为允许远程连接。（提供程序：SQL网络接口，错误：50-发生本地数据库运行时错误。指定的LocalDB实例不存在。 ) Source=.Net SqlClient数据提供程序堆栈跟踪：位于System.Data.SqlClient.SqlInternalConnectionDS..ctor（DbConnectionPoolIdentity、SqlConnectionString connectionOptions、SqlCredential凭证、对象提供信息、String newPassword、SecureString newSecurePassword、Boolean redirectedUserInstance、SqlConnectionString userConnectionOptions、SessionData重新连接SessionData、DbConnectionPool池、String accessToken、Boolean applyTransientF奥兰多（荷兰）位于System.Data.SqlClient.SqlConnectionFactory.CreateConnection（DbConnectionOptions、DbConnectionPoolKey、Object poolGroupProviderInfo、DbConnectionPool、DBConnectionOwningConnection、DbConnectionOptions用户选项）位于System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection（DbConnectionPool池、DbConnectionOwningObject、DbConnectionOptions选项、DbConnectionPoolKey池键、DbConnectionOptions用户选项）位于System.Data.ProviderBase.DbConnectionPool.CreateObject（DbConnection-owningObject、DbConnectionOptions-userOptions、DbConnectionInternal-oldConnection）位于System.Data.ProviderBase.DbConnectionPool.UserCreateRequest（DbConnection owningObject、DbConnectionOptions userOptions、DbConnectionInternal oldConnection）位于System.Data.ProviderBase.DbConnectionPool.TryGetConnection（DbConnection owningObject、UInt32 waitForMultipleObjectsTimeout、Boolean allowCreate、Boolean OnlyOnEckConnection、DbConnectionOptions userOptions、DbConnectionInternal和connection）位于System.Data.ProviderBase.DbConnectionPool.TryGetConnection（DbConnection owningObject、TaskCompletionSource`1重试、DbConnectionOptions用户选项、DbConnectionInternal和connection）位于System.Data.ProviderBase.DbConnectionFactory.TryGetConnection（DbConnection owningConnection、TaskCompletionSource`1重试、DbConnectionOptions用户选项、DbConnectionInternal oldConnection、DbConnectionInternal&connection）位于System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal（DbConnection outerConnection、DbConnectionFactory connectionFactory、TaskCompletionSource`1重试，DbConnectionOptions用户选项）位于System.Data.ProviderBase.DbConnectionClosed.TryOpenConnection（DbConnection outerConnection、DbConnectionFactory connectionFactory、TaskCompletionSource`1重试、DbConnectionOptions用户选项）位于System.Data.SqlClient.SqlConnection.TryOpenInner（TaskCompletionSource`1重试）位于System.Data.SqlClient.SqlConnection.TryOpen（TaskCompletionSource`1重试）在System.Data.SqlClient.SqlConnection.Open（）处在System.Data.Entity.Infrastructure.Interception.DbConnectionDispatcher.b_u36（DbConnection t，DbConnectionInterceptionContext c）在System.Data.Entity.Infrastructure.InternalDispatcher`1.Dispatch[TTarget，TInterceptionContext]（TTarget，Action`2 operation，TInterceptionContext interceptionContext，Action`3 executing，Action`3 executed）位于System.Data.Entity.Infrastructure.Interception.DbConnectionDispatcher.Open（DbConnection连接，DbInterceptionContext interceptionContext）位于System.Data.Entity.SqlServer.SqlProviderServices.c__DisplayClass33.b__u32（）在System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.c__DisplayClass1.b__0（）中在System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute[TResult]（Func`1操作）中位于System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute（操作操作）位于System.Data.Entity.SqlServer.SqlProviderServices.UsingConnection（DbConnection-sqlConnection，Action`1-act）位于System.Data.Entity.SqlServer.SqlProviderServices.UsingMasterConnection（DbConnection-sqlConnection，Actio System.Data.SqlClient.SqlException occurred HResult=0x80131904 Message=A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 50 - Local Database Runtime error occurred. The specified LocalDB instance does not exist. ) Source=.Net SqlClient Data Provider StackTrace: at System.Data.SqlClient.SqlInternalConnectionTds..ctor(DbConnectionPoolIdentity identity, SqlConnectionString connectionOptions, SqlCredential credential, Object providerInfo, String newPassword, SecureString newSecurePassword, Boolean redirectedUserInstance, SqlConnectionString userConnectionOptions, SessionData reconnectSessionData, DbConnectionPool pool, String accessToken, Boolean applyTransientFaultHandling) at System.Data.SqlClient.SqlConnectionFactory.CreateConnection(DbConnectionOptions options, DbConnectionPoolKey poolKey, Object poolGroupProviderInfo, DbConnectionPool pool, DbConnection owningConnection, DbConnectionOptions userOptions) at System.Data.ProviderBase.DbConnectionFactory.CreatePooledConnection(DbConnectionPool pool, DbConnection owningObject, DbConnectionOptions options, DbConnectionPoolKey poolKey, DbConnectionOptions userOptions) at System.Data.ProviderBase.DbConnectionPool.CreateObject(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection) at System.Data.ProviderBase.DbConnectionPool.UserCreateRequest(DbConnection owningObject, DbConnectionOptions userOptions, DbConnectionInternal oldConnection) at System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& 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& connection) at System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) at System.Data.ProviderBase.DbConnectionClosed.TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource`1 retry, DbConnectionOptions userOptions) at System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource`1 retry) at System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource`1 retry) at System.Data.SqlClient.SqlConnection.Open() at System.Data.Entity.Infrastructure.Interception.DbConnectionDispatcher.<Open>b__36(DbConnection t, DbConnectionInterceptionContext c) at System.Data.Entity.Infrastructure.Interception.InternalDispatcher`1.Dispatch[TTarget,TInterceptionContext](TTarget target, Action`2 operation, TInterceptionContext interceptionContext, Action`3 executing, Action`3 executed) at System.Data.Entity.Infrastructure.Interception.DbConnectionDispatcher.Open(DbConnection connection, DbInterceptionContext interceptionContext) at System.Data.Entity.SqlServer.SqlProviderServices.<>c__DisplayClass33.<UsingConnection>b__32() at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.<>c__DisplayClass1.<Execute>b__0() at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute[TResult](Func`1 operation) at System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute(Action operation) at System.Data.Entity.SqlServer.SqlProviderServices.UsingConnection(DbConnection sqlConnection, Action`1 act) at System.Data.Entity.SqlServer.SqlProviderServices.UsingMasterConnection(DbConnection sqlConnection, Action`1 act) at System.Data.Entity.SqlServer.SqlProviderServices.CreateDatabaseFromScript(Nullable`1 commandTimeout, DbConnection sqlConnection, String createDatabaseScript) at System.Data.Entity.SqlServer.SqlProviderServices.DbCreateDatabase(DbConnection connection, Nullable`1 commandTimeout, StoreItemCollection storeItemCollection) at System.Data.Entity.Core.Common.DbProviderServices.CreateDatabase(DbConnection connection, Nullable`1 commandTimeout, StoreItemCollection storeItemCollection) at System.Data.Entity.Core.Objects.ObjectContext.CreateDatabase() at System.Data.Entity.Migrations.Utilities.DatabaseCreator.Create(DbConnection connection) at System.Data.Entity.Migrations.DbMigrator.EnsureDatabaseExists(Action mustSucceedToKeepDatabase) at System.Data.Entity.Migrations.DbMigrator.Update(String targetMigration) at System.Data.Entity.Internal.DatabaseCreator.CreateDatabase(InternalContext internalContext, Func`3 createMigrator, ObjectContext objectContext) at System.Data.Entity.Internal.InternalContext.CreateDatabase(ObjectContext objectContext, DatabaseExistenceState existenceState) at System.Data.Entity.Database.Create(DatabaseExistenceState existenceState) at System.Data.Entity.CreateDatabaseIfNotExists`1.InitializeDatabase(TContext context) at System.Data.Entity.Internal.InternalContext.<>c__DisplayClassf`1.<CreateInitializationAction>b__e() at System.Data.Entity.Internal.InternalContext.PerformInitializationAction(Action action) at System.Data.Entity.Internal.InternalContext.PerformDatabaseInitialization() at System.Data.Entity.Internal.LazyInternalContext.<InitializeDatabase>b__4(InternalContext c) at System.Data.Entity.Internal.RetryAction`1.PerformAction(TInput input) at System.Data.Entity.Internal.LazyInternalContext.InitializeDatabaseAction(Action`1 action) at System.Data.Entity.Internal.LazyInternalContext.InitializeDatabase() at System.Data.Entity.Internal.InternalContext.GetEntitySetAndBaseTypeForType(Type entityType) at System.Data.Entity.Internal.Linq.InternalSet`1.Initialize() at System.Data.Entity.Internal.Linq.InternalSet`1.get_InternalContext() at System.Data.Entity.Infrastructure.DbQuery`1.System.Linq.IQueryable.get_Provider() at System.Data.Entity.QueryableExtensions.FirstOrDefaultAsync[TSource](IQueryable`1 source, Expression`1 predicate, CancellationToken cancellationToken) at System.Data.Entity.QueryableExtensions.FirstOrDefaultAsync[TSource](IQueryable`1 source, Expression`1 predicate) at Microsoft.AspNet.Identity.EntityFramework.UserStore`6.<GetUserAggregateAsync>d__68.MoveNext() at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.AspNet.Identity.UserValidator`2.<ValidateUserName>d__4.MoveNext() at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.AspNet.Identity.UserValidator`2.<ValidateAsync>d__0.MoveNext() at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.AspNet.Identity.UserManager`2.<CreateAsync>d__0.MoveNext() at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.AspNet.Identity.UserManager`2.<CreateAsync>d__d.MoveNext() at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Microsoft.AspNet.Identity.AsyncHelper.RunSync[TResult](Func`1 func) at Microsoft.AspNet.Identity.UserManagerExtensions.Create[TUser,TKey](UserManager`2 manager, TUser user, String password) at AspIdentityPracticeConsole.Program.Main(String[] args) in C:\test\Program.cs:line 27 <defaultConnectionFactory type="System.Data.Entity.Infrastructure.SqlConnectionFactory, EntityFramework"> <parameters> <parameter value="Data Source=.; Integrated Security=True; MultipleActiveResultSets=True" /> </parameters> </defaultConnectionFactory>** Data Source=.\SQLEXPRESS;Initial Catalog=DefaultConnection;Integrated Security=True;MultipleActiveResultSets=True