c# - 如何生成具有多个集合的表的 Controller ？

Question

这是我的表结构和上下文:

using Microsoft.AspNet.Identity;
using Microsoft.AspNet.Identity.EntityFramework;
using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;
using System.Data.Entity;
using System.Linq;
using System.Web;

namespace AspnetIdentitySample.Models
{
    public class Employee : IdentityUser
    {
        public string FirstName { get; set; }
        public string LastName { get; set; }
        public virtual ICollection<MyTask> MyTasks { get; set; }
        public virtual ICollection<Customer> Customers { get; set; }

    }
    public class MyTask
    {
        public int MyTaskId { get; set; }
        public string Description { get; set; }
        public DateTime OldDate { get; set; }
        public DateTime NewDate { get; set; }
        public bool IsDone { get; set; }
        public virtual Employee User { get; set; }
    }

    public class Customer
    {
        public int CustomerId { get; set; }
        public string FirstName { get; set; }
        public string LastName { get; set; }
        public virtual Employee Employee { get; set; }
    }



    public class MyDbContext : IdentityDbContext<Employee>
    {
        public MyDbContext()
            : base("DefaultConnection")
        {
        }

        protected override void OnModelCreating(DbModelBuilder modelBuilder)
        {
            base.OnModelCreating(modelBuilder);

            // Change the admin of the table to be Users instead of AspNetUsers
            modelBuilder.Entity<IdentityUser>()
                .ToTable("Employee");
            modelBuilder.Entity<Employee>()
                .ToTable("Employee");
        }

        public DbSet<MyTask> MyTasks { get; set; }
        public DbSet<Customer> Customers { get; set; }
        public DbSet<Employee> Employees { get; set; }

    }


}

当我尝试使用 Entity Framework 创建 CRUD Controller 时，它显示以下错误消息。任何帮助，将不胜感激。 :)

Answer 1

OP 添加了更多细节和代码。原始答案已过时且错误

/编辑:

您正试图将 2 个模型绑定(bind)到同一个表:

modelBuilder.Entity<IdentityUser>()
            .ToTable("Employee");
modelBuilder.Entity<Employee>()
            .ToTable("Employee");

此外，您尝试添加 public DbSet<Employee> Employees { get; set; }它应该已经在 datsabase 中作为上下文类定义定义的身份表。 我没有尝试重命名 aspnetusers 表，但我会尝试删除以下行:

modelBuilder.Entity<IdentityUser>()
            .ToTable("Employee");

public DbSet<Employee> Employees { get; set; }

这应该可以解决问题。