C# ASP.NET标识返回元数据资源错误

我正在尝试创建一个ASP.NET标识系统，我已经完成了页面的一半，但是当我开始编写以下代码时

        public async Task<string> AddUser()
        {
            ApplicationUser user;
            ApplicationUserStore Store = new ApplicationUserStore(new ApplicationDbContext());
            ApplicationUserManager userManager = new ApplicationUserManager(Store);
            user = new ApplicationUser
            {
                UserName = "bla",
                Email = "o@gmail.com",            
            };

            var result = await userManager.CreateAsync(user);

            if (!result.Succeeded)
            {
                return result.Errors.First();
            }
            return "User Added";
        }

DbContext基于使用以下SQL创建的此连接字符串中的表

CREATE TABLE [dbo].[UsersTable](
    [UserID] [int] IDENTITY(1,1) NOT NULL,
    [UserName] [nchar](200) NOT NULL,
    [Email] [nchar](200) NOT NULL,
    [EmailConfirmed] [bit] NOT NULL,
    [Password] [nchar](200) NOT NULL,
    [Hospital] [nchar](200) NOT NULL,
    [Salt] [nvarchar](500) NOT NULL,
 CONSTRAINT [PK_UsersTable] PRIMARY KEY CLUSTERED 
(
    [UserID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
GO

---

你看过这个吗@DavidG我确实看过了，但它涉及到元数据的.edmx文件，我的项目没有很好地包含这些元数据，因为您没有向我们展示任何与您的上下文相关的内容，我们只能猜测。这里没有足够的信息来回答这个问题。为了让我的问题有上下文，你还需要什么？我对ASP.NET身份非常陌生，所以我知道的很少。那么，首先来看看

ApplicationDbContext

？你给了它什么配置？您的连接字符串是什么样子的？

CREATE TABLE [dbo].[UsersTable](
    [UserID] [int] IDENTITY(1,1) NOT NULL,
    [UserName] [nchar](200) NOT NULL,
    [Email] [nchar](200) NOT NULL,
    [EmailConfirmed] [bit] NOT NULL,
    [Password] [nchar](200) NOT NULL,
    [Hospital] [nchar](200) NOT NULL,
    [Salt] [nvarchar](500) NOT NULL,
 CONSTRAINT [PK_UsersTable] PRIMARY KEY CLUSTERED 
(
    [UserID] ASC
)WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
) ON [PRIMARY]
GO