如何定义Entity Framework的BaseContext

Question

    public class BaseContext<TContext>
    : DbContext where TContext : DbContext
    {
        static BaseContext()
        {
            Database.SetInitializer<TContext>(null);
        }
        protected BaseContext()
            : base("connectionString")
        { }        
    }

在这个页面看到的BaseContext以及代码示例

我的使用方法

    public class Admin 
    {
        public Guid ID { get; set; }
        public string Name { get; set; }
        public string Pass { get; set; }
    }

    public class UserContext : BaseContext<UserContext>
    {
        public DbSet<Admin> Admins { get; set; }
    }

使用时却提示上下文类型不受支持请问是怎么回事

Answer 1

具体是哪句话引发了异常？可以给出调试时候哪句话抛出异常？谢谢。

---

If you think one reply solves your problem, please mark it as An Answer, if you think someone's reply helps you, please mark it as a Proposed Answer

Help by clicking：
Click here to donate your rice to the poor
Click to Donate
Click to feed Dogs & Cats

Answer 2

新建控制器的时候

其中 MyContext 类

    public class MyContext : BaseContext<MyContext>
    {
        public DbSet<Admin> Admins { get; set; }
    }

如果 MyContext 类直接继承DbContext就没问题 例如

    public class MyContext : DbContext
    {
        public DbSet<Admin> Admins { get; set; }
    }

Answer 3

尝试为其定义一个公开构造函数，并修改其访问权限：

public class BaseContext<TContext>
    : DbContext where TContext : DbContext
    {
        static BaseContext()
        {
            Database.SetInitializer<TContext>(null);
        }
        public BaseContext()
            : base("connectionString")
        { }  
          
        public BaseContext()
        {
        }  
    }

---

If you think one reply solves your problem, please mark it as An Answer, if you think someone's reply helps you, please mark it as a Proposed Answer

Help by clicking：
Click here to donate your rice to the poor
Click to Donate
Click to feed Dogs & Cats

Answer 4

依然是不可以的。提示上下文类型不受支持

Answer 5

提供一下你的模板信息