ApplicationDbContext.OnModelCreating（ModelBuilder）：找不到合适的方法覆盖

Question

我试图使用代码第一次迁移的方法（从代码genrate数据库）。但面临错误。这里是我的代码

using Microsoft.AspNet.Identity.EntityFramework; 

namespace IMChatApp.Models 
{ 
    // You can add profile data for the user by adding more properties to your ApplicationUser class, please visit http://go.microsoft.com/fwlink/?LinkID=317594 to learn more. 
    public class ApplicationUser : IdentityUser 
    { 
    } 

    public class ApplicationDbContext : IdentityDbContext<ApplicationUser> 
    { 
     public ApplicationDbContext() 
      : base("DefaultConnection") 
     { 
     } 
     protected override void OnModelCreating(ModelBuilder modelBuilder) 
     { 
      modelBuilder.IncludeMetadataInDatabase = false; 
     } 
     public System.Data.Entity.DbSet<JustDoIt.Models.user> users { get; set; } 
    } 
} 

Answer 1

按照documentation，该OnModelCreating方法需要一个DbModelBuilder，而不是一个ModelBuilder。