Question

如果您有现有数据库，并且要向其中包含Asp.NET Identity表，则可能会遇到此错误。同样在开始时，您可能不知道如何将 [AspNetRoles]，[AspNetUserClaims]，[AspNetUsers]，[AspNetUserLogins] 表集成到现有数据库中。尽管有很多关于这个主题的资源，但这个答案是最短的答案之一。除了Asp.NET MVC的Asp.NET Identity功能之外，您可能希望在Entity Framework中使用Database-First方法。这是一个非常简短的假人教程。如果不好我很抱歉。

Answer 1

以下是Asp.NET Identity表与现有数据库的最短集成。

1）在Visual Studio（2015或2013）中打开新项目或现有项目。打开服务器资源管理器并打开 DefaultConnection 。找到您的身份表。（在WebConfig文件中，localDB connectionstring应该是活动的。并且您的其他现有数据库的连接字符串不应处于活动状态。）双击 [AspNetRoles]，[AspNetUserClaims]，[AspNetUsers]，[AspNetUserLogins] < / strong>表格。并复制他们所有的SQL代码。

2）在SQL Server Management Studio中打开现有数据库，右键单击您的数据库，然后单击您在第1部分中复制的新查询。你会经历这样的事情：

CREATE TABLE [dbo].[AspNetRoles] ( [Id] NVARCHAR (128) NOT NULL, [Name] NVARCHAR (256) NOT NULL, CONSTRAINT [PK_dbo.AspNetRoles] PRIMARY KEY CLUSTERED ([Id] ASC) ); GO CREATE UNIQUE NONCLUSTERED INDEX [RoleNameIndex] ON [dbo].[AspNetRoles]([Name] ASC); CREATE TABLE [dbo].[AspNetUsers] ( [Id] NVARCHAR (128) NOT NULL, [Email] NVARCHAR (256) NULL, [EmailConfirmed] BIT NOT NULL, [PasswordHash] NVARCHAR (MAX) NULL, [SecurityStamp] NVARCHAR (MAX) NULL, [PhoneNumber] NVARCHAR (MAX) NULL, [PhoneNumberConfirmed] BIT NOT NULL, [TwoFactorEnabled] BIT NOT NULL, [LockoutEndDateUtc] DATETIME NULL, [LockoutEnabled] BIT NOT NULL, [AccessFailedCount] INT NOT NULL, [UserName] NVARCHAR (256) NOT NULL, CONSTRAINT [PK_dbo.AspNetUsers] PRIMARY KEY CLUSTERED ([Id] ASC) ); GO CREATE UNIQUE NONCLUSTERED INDEX [UserNameIndex] ON [dbo].[AspNetUsers]([UserName] ASC); CREATE TABLE [dbo].[AspNetUserRoles] ( [UserId] NVARCHAR (128) NOT NULL, [RoleId] NVARCHAR (128) NOT NULL, CONSTRAINT [PK_dbo.AspNetUserRoles] PRIMARY KEY CLUSTERED ([UserId] ASC, [RoleId] ASC), CONSTRAINT [FK_dbo.AspNetUserRoles_dbo.AspNetRoles_RoleId] FOREIGN KEY ([RoleId]) REFERENCES [dbo].[AspNetRoles] ([Id]) ON DELETE CASCADE, CONSTRAINT [FK_dbo.AspNetUserRoles_dbo.AspNetUsers_UserId] FOREIGN KEY ([UserId]) REFERENCES [dbo].[AspNetUsers] ([Id]) ON DELETE CASCADE ); GO CREATE NONCLUSTERED INDEX [IX_UserId] ON [dbo].[AspNetUserRoles]([UserId] ASC); GO CREATE NONCLUSTERED INDEX [IX_RoleId] ON [dbo].[AspNetUserRoles]([RoleId] ASC); CREATE TABLE [dbo].[AspNetUserLogins] ( [LoginProvider] NVARCHAR (128) NOT NULL, [ProviderKey] NVARCHAR (128) NOT NULL, [UserId] NVARCHAR (128) NOT NULL, CONSTRAINT [PK_dbo.AspNetUserLogins] PRIMARY KEY CLUSTERED ([LoginProvider] ASC, [ProviderKey] ASC, [UserId] ASC), CONSTRAINT [FK_dbo.AspNetUserLogins_dbo.AspNetUsers_UserId] FOREIGN KEY ([UserId]) REFERENCES [dbo].[AspNetUsers] ([Id]) ON DELETE CASCADE ); GO CREATE NONCLUSTERED INDEX [IX_UserId] ON [dbo].[AspNetUserLogins]([UserId] ASC); CREATE TABLE [dbo].[AspNetUserClaims] ( [Id] INT IDENTITY (1, 1) NOT NULL, [UserId] NVARCHAR (128) NOT NULL, [ClaimType] NVARCHAR (MAX) NULL, [ClaimValue] NVARCHAR (MAX) NULL, CONSTRAINT [PK_dbo.AspNetUserClaims] PRIMARY KEY CLUSTERED ([Id] ASC), CONSTRAINT [FK_dbo.AspNetUserClaims_dbo.AspNetUsers_UserId] FOREIGN KEY ([UserId]) REFERENCES [dbo].[AspNetUsers] ([Id]) ON DELETE CASCADE ); GO CREATE NONCLUSTERED INDEX [IX_UserId] ON [dbo].[AspNetUserClaims]([UserId] ASC);

如果您忘记以GO开头的行，您将看到此问题标题中的错误。运行此查询并等待成功创建表。您现有的数据库现已准备好使用Asp.NET MVC 5的Identity功能。

3）在Visual Studio中打开WebConfig。我们将在这里更改连接字符串。写下这个：

<add name="DefaultConnection" connectionString="Data Source=YOUR_SERVER_NAME;Initial Catalog=YOUR_DATABASE_NAME;Persist Security Info=True;User ID=YOUR_USER_ID;Password=YOUR_PASSWORD.;MultipleActiveResultSets=True;Application Name=EntityFramework" providerName="System.Data.SqlClient"/>

而不是localDB连接字符串。这是：

<add name="DefaultConnection" connectionString="Data Source=(LocalDb)\MSSQLLocalDB;AttachDbFilename=|DataDirectory|\aspnet-....mdf;Initial Catalog=aspnet-...;Integrated Security=True" providerName="System.Data.SqlClient" />

这就是你需要做的一切。运行您的项目并注册。您可以在现有数据库的AspNetUsers表中查看新用户数据。

Answer 2

在Visual Studio中，转到＆＃34;工具 - ＆gt; NuGet包管理器 - ＆gt;包管理器控制台＆＃34;并在控制台窗口（在Visual Studio内）执行＆＃34;更新 - 数据库＆＃34;命令

Answer 3

我经历过这个有些时候用户为会员创建自定义类，因此asp.net不会创建AspNetUsers表
例如：

public class Member : IdentityUser
{
    Public int MemberID { get; set; }
    public string Name { get; set; }
    public string Family { get; set; }
    public string Password { get; set; }

}

在这种情况下，ASP.NET创建成员表，当用户想要进行身份验证时，ASP.NET搜索AspNetUsers并没有找到此表。在自定义类

的开头添加TableAttribute解决了这个问题

[Table("AspNetUsers")]
public class Member : IdentityUser
{
    Public int MemberID { get; set; }
    public string Name { get; set; }
    public string Family { get; set; }
    public string Password { get; set; }

}

Answer 4

类似于上述内容，您可以在ConfigureServices中完成此操作

services.Configure<ApplicationDbContext>(o =>
{
  // Make sure the identity database is created
  .o.Database.Migrate();
});
    //     Applies any pending migrations for the context to the database. Will create the
    //     database if it does not already exist.
    //     Note that this API is mutually exclusive with DbContext.Database.EnsureCreated().
    //     EnsureCreated does not use migrations to create the database and therefore the
    //     database that is created cannot be later updated using migrations.

Answer 5

我遇到了同样的问题，在这里我忘了打电话给 EnsureCreated（）。调用此方法后，它将创建Identity所需的所有表。

Startup.cs

public void Configure(IApplicationBuilder app, IHostingEnvironment env, IServiceProvider serviceProvider)
{
        ...

        // Make sure we have the database
        serviceProvider.GetService<ApplicationDbContext>().Database.EnsureCreated();
}

Answer 6

删除文件夹/.vs/[solution_name]/DesignTimeBuild。命令行中的下一个：dotnet ef数据库更新--context [your_db_context_name] 它对我有用。

Answer 7

最快的方法是重新创建一个新项目，然后选择个人身份验证。然后使用旧文件代替新文件。

无效的对象名称＆＃d; .dspNetUsers＆＃39;在Asp.NET MVC 5实体框架中

7 个答案: