是否可以使用以下建模的N-Tier设计基于关键字查询AspNetUsers表:

Implementing a generic data access layer using Entity Framework

我在DAL中创建了以下接口:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Library.Model;

namespace Library.DataAccessLayer
{
    ...

    public interface IAspNetUserRepository : IGenericDataRepository<ApplicationUser>
    {
    }

    public class AspNetUserRepository : GenericDataRepository<ApplicationUser>, IAspNetUserRepository
    {
    }
}


以及以下BLL条目:

using System;
using System.Collections.Generic;
using System.Linq;
using Library.DataAccessLayer;
using Library.Model;

namespace Library.BusinessLogicLayer
{
    public interface IBusinessLogicLayer_AspNetUser
    {
        ApplicationUser GetAspNetUserByAspNetUserID(string _UserID);
    }

    public class BusinessLogicLayer_AspNetUser : IBusinessLogicLayer_AspNetUser
    {
        private readonly IAspNetUserRepository _AspNetUserRepository;

        public BusinessLogicLayer_AspNetUser()
        {
            _AspNetUserRepository = new AspNetUserRepository();
        }

        public BusinessLogicLayer_AspNetUser(IAspNetUserRepository AspNetUserRepository)
        {
            _AspNetUserRepository = AspNetUserRepository;
        }

        public ApplicationUser GetAspNetUserByAspNetUserID(string _UserID)
        {
            return _AspNetUserRepository.GetSingle(u => u.Id.Equals(_UserID));
        }
    }
}


现在在BLL文件中,唯一的Lambda表达式不包含Td,因此会出错。

什么是要使用的正确模型。我能找到的唯一信息是ApplicationUser继承了Identity User。

需要做什么或更改什么才能将这些字段添加到ApplicationUser模型中,而又不影响数据库的“代码优先”部分?

最佳答案

我终于找到了答案。它实际上正盯着我。

只需使用以下代码即可获取用户对象:

var context = new ApplicationDbContext();
var user = context.Users.{Methods and Lambda expressions};


例如,假设您需要现有的已知活动用户的UserName,请使用User.Identity.Name。并获取活动用户的AspNetUsers数据库记录:

var context = new ApplicationDbContext();
var user = context.Users.SingleOrDefault(u => u.UserName == User.Identity.Name);

10-04 14:40