c# automapper 使用(一)

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一、最簡單的用法

有兩個類User和UserDto

 1     public class User 2     { 3         public int Id { get; set; } 4         public string Name { get; set; } 5         public int Age { get; set; } 6     } 7  8     public class UserDto 9     {10         public string Name { get; set; }11         public int Age { get; set; }12     }

將User轉換成UserDto也和簡單

1     Mapper.Initialize(x => x.CreateMap<User, UserDto>());2     User user = new User()3     {4         Id = 1,5         Name = "caoyc",6         Age = 207     };8     var dto = Mapper.Map<UserDto>(user);

 這是一種最簡單的使用，AutoMapper會更加欄位名稱去自動對於，忽略大小寫。

 

二、如果屬性名稱不同

將UserDto的Name屬性改成Name2

 1     Mapper.Initialize(x =>  2         x.CreateMap<User, UserDto>() 3          .ForMember(d =>d.Name2, opt => { 4             opt.MapFrom(s => s.Name); 5             }) 6         ); 7  8     User user = new User() 9     {10         Id = 1,11         Name = "caoyc",12         Age = 2013     };14 15     var dto = Mapper.Map<UserDto>(user);

 

三、使用Profile配置

自訂一個UserProfile類繼承Profile，並重寫Configure方法

 1     public class UserProfile : Profile 2     { 3         protected override void Configure() 4         { 5             CreateMap<User, UserDto>() 6                 .ForMember(d => d.Name2, opt => 7                 { 8                     opt.MapFrom(s => s.Name); 9                 });10         }11     }

使用時就這樣

 1     Mapper.Initialize(x => x.AddProfile<UserProfile>()); 2  3     User user = new User() 4     { 5         Id = 1, 6         Name = "caoyc", 7         Age = 20 8     }; 9 10     var dto = Mapper.Map<UserDto>(user);

 

c# automapper 使用(一)