AutoMapper.EF6

最新推荐文章于 2024-11-11 13:11:04 发布

weixin_34121304

最新推荐文章于 2024-11-11 13:11:04 发布

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本文介绍了一种简化AutoMapper与EF6结合使用的扩展方法，通过自定义属性和简化配置，使得数据映射更为高效。文章展示了如何利用这些扩展减少冗余代码，并提供了一个具体的例子来说明其用法。

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https://github.com/AutoMapper/AutoMapper.EF6

Extensions for AutoMapper and EF6

This contains some useful extensions I've used with AutoMapper and EF6. Instead of this:

Mapper.CreateMap<Employee, EmployeeDto>()
  .ForMember(d => d.FullName, opt => opt.MapFrom(src => src.FirstName + " " + src.LastName));

var employees = await db.Employees.ProjectTo<EmployeeDto>().ToListAsync();
You can do this instead:

public class Employee {
  [Computed]
  public string FullName { get { return FirstName + " " + LastName; } }
}
Mapper.CreateMap<Employee, EmployeeDto>();

var employees = await db.Employees.ProjectToListAsync<EmployeeDto>();
This package wraps up calling ProjectTo, the DelegateDecompiler Decompile/DecompileAsync methods, and then the LINQ methods to execute the queryable (ToList, ToArray, Single, SingleOrDefault etc).