Asp.net mvc 5 上下文错误-实体类型ApplicationUser不是当前上下文的模型的一部分

嗯，我在没有任何帮助的情况下尝试了很多事情。 这种情况是，如果我将我的连接字符串作为常规连接字符串，例如：

<add name="MyConnectionString" connectionString="Data Source=mydatasource;Connection Lifetime=10;Max Pool Size=800;Initial Catalog=mydb;Persist Security Info=True;MultipleActiveResultSets=True;User ID=myuser;Password=mypass" providerName="System.Data.SqlClient" />

错误来自这里：

public partial class myConnectionString : DbContext
{
    public myConnectionString()
        : base("name=myConnectionString")
    {
    }

    protected override void OnModelCreating(DbModelBuilder modelBuilder)
    {
        throw new UnintentionalCodeFirstException();// error comes from here
    }

    public virtual DbSet<AspNetRoles> AspNetRoles { get; set; }
    public virtual DbSet<AspNetUserClaims> AspNetUserClaims { get; set; }
    public virtual DbSet<AspNetUserLogins> AspNetUserLogins { get; set; }
    public virtual DbSet<AspNetUsers> AspNetUsers { get; set; }
    public virtual DbSet<ConnectedUsers> ConnectedUsers { get; set; }
}

 var user = UserManager.Find(email, password);

错误来自这里：

public partial class myConnectionString : DbContext
{
    public myConnectionString()
        : base("name=myConnectionString")
    {
    }

    protected override void OnModelCreating(DbModelBuilder modelBuilder)
    {
        throw new UnintentionalCodeFirstException();// error comes from here
    }

    public virtual DbSet<AspNetRoles> AspNetRoles { get; set; }
    public virtual DbSet<AspNetUserClaims> AspNetUserClaims { get; set; }
    public virtual DbSet<AspNetUserLogins> AspNetUserLogins { get; set; }
    public virtual DbSet<AspNetUsers> AspNetUsers { get; set; }
    public virtual DbSet<ConnectedUsers> ConnectedUsers { get; set; }
}

 var user = UserManager.Find(email, password);

这是我在startup.auth.cs中的内容

public void ConfigureAuth(IAppBuilder app)
    {
        // Configure the db context and user manager to use a single instance per request
        app.CreatePerOwinContext(ApplicationDbContext.Create);
        app.CreatePerOwinContext<ApplicationUserManager>(ApplicationUserManager.Create);

        // Enable the application to use a cookie to store information for the signed in user
        // and to use a cookie to temporarily store information about a user logging in with a third party login provider
        // Configure the sign in cookie
        app.UseCookieAuthentication(new CookieAuthenticationOptions
        {
            AuthenticationType = DefaultAuthenticationTypes.ApplicationCookie,
            LoginPath = new PathString("/Account/Login"),
            Provider = new CookieAuthenticationProvider
            {
                OnValidateIdentity = SecurityStampValidator.OnValidateIdentity<ApplicationUserManager, ApplicationUser>(
                    validateInterval: TimeSpan.FromMinutes(30),
                    regenerateIdentity: (manager, user) => user.GenerateUserIdentityAsync(manager))
            }
        });

        app.UseExternalSignInCookie(DefaultAuthenticationTypes.ExternalCookie);
}

public void ConfigureAuth（IAppBuilder应用程序）
{
//将db上下文和用户管理器配置为每个请求使用一个实例
app.CreatePerOwinContext（ApplicationDbContext.Create）；
app.CreatePerOwinContext（ApplicationUserManager.Create）；
//使应用程序能够使用cookie存储登录用户的信息
//以及使用cookie临时存储用户登录第三方登录提供商的信息
//配置登录cookie
app.UseCookieAuthentication（新的CookieAuthenticationOptions
{
AuthenticationType=DefaultAuthenticationTypes.ApplicationOkie，
LoginPath=新路径字符串（“/Account/Login”），
Provider=新CookieAuthenticationProvider
{
OnValidateIdentity=SecurityStampValidator.OnValidateIdentity(
validateInterval:TimeSpan.FromMinutes（30），
regenerateIdentity：（管理器，用户）=>user.GenerateUserIdentityAsync（管理器））
}
});
app.UseExternalSignInCookie（DefaultAuthenticationTypes.ExternalCookie）；
}

需要注意的事项： 我在一个项目中有实体框架（EDMX），在另一个项目中有身份验证（IdentityModel，Usermanager）。我从另一个MVC5项目中使用了它（在那里我有startup.auth.cs）。 在app/web配置的所有项目中，我都有相同的连接字符串

---

我该如何解决这个问题？任何帮助

不能在一个LINQ查询中混合来自两个不同上下文的实体。但我不会这么做！！很公平，但我不知道你是干什么的。异常发生在哪里？（方法+行）更新了我的问题，其中错误来自于两个问题完全无关的特定点，第一个问题不再是问题。所以你最好把所有多余的文字从你的问题中删除。对于剩下的问题：如何实例化

UserManager

？

public void ConfigureAuth(IAppBuilder app)
    {
        // Configure the db context and user manager to use a single instance per request
        app.CreatePerOwinContext(ApplicationDbContext.Create);
        app.CreatePerOwinContext<ApplicationUserManager>(ApplicationUserManager.Create);

        // Enable the application to use a cookie to store information for the signed in user
        // and to use a cookie to temporarily store information about a user logging in with a third party login provider
        // Configure the sign in cookie
        app.UseCookieAuthentication(new CookieAuthenticationOptions
        {
            AuthenticationType = DefaultAuthenticationTypes.ApplicationCookie,
            LoginPath = new PathString("/Account/Login"),
            Provider = new CookieAuthenticationProvider
            {
                OnValidateIdentity = SecurityStampValidator.OnValidateIdentity<ApplicationUserManager, ApplicationUser>(
                    validateInterval: TimeSpan.FromMinutes(30),
                    regenerateIdentity: (manager, user) => user.GenerateUserIdentityAsync(manager))
            }
        });

        app.UseExternalSignInCookie(DefaultAuthenticationTypes.ExternalCookie);
}