EF架构~对AutoMapper实体映射的扩展

时间:2023-01-11 18:43:02

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AutoMapper在之前我曾经介绍过,今天主要是把它作一下扩展,因为它的调用太麻烦了,呵呵,扩展之后,用着还可以,感觉.net3.5之后,有了扩展方法这个东西,在程序开发速度及表现力上都有了明显的提升,呵呵。

当扩展方法开发完之后的效果如下

实体对实体的映射(赋值)

        var user = new User
{
ID = ,
Name = "zzl",
CreateDate = DateTime.Now,
};
       UserModel model = user.MapTo<UserModel>();
      Console.WriteLine(model.ID + model.Name);

集合对集合的映射(赋值)

       var userList = new List<User> { user };
userList.Add(new User
{
ID = ,
Name = "zzllr",
CreateDate = DateTime.Now,
});
var modelList = userList.MapTo<UserModel>();
modelList.ForEach(i =>
{
Console.WriteLine(i.Name);
});

下面是扩展方法的代码,一个是实体的,一个是集合的

   /// <summary>
/// AutoMapper扩展方法
/// </summary>
public static class AutoMapperExtension
{
/// <summary>
/// 集合对集合
/// </summary>
/// <typeparam name="TResult"></typeparam>
/// <param name="self"></param>
/// <returns></returns>
public static List<TResult> MapTo<TResult>(this IEnumerable self)
{
if (self == null)
throw new ArgumentNullException();
Mapper.CreateMap(self.GetType(), typeof(TResult));
return (List<TResult>)Mapper.Map(self, self.GetType(), typeof(List<TResult>));
}
/// <summary>
/// 对象对对象
/// </summary>
/// <typeparam name="TResult"></typeparam>
/// <param name="self"></param>
/// <returns></returns>
public static TResult MapTo<TResult>(this object self)
{
if (self == null)
throw new ArgumentNullException();
Mapper.CreateMap(self.GetType(), typeof(TResult));
return (TResult)Mapper.Map(self, self.GetType(), typeof(TResult));
} }

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