map映射

最新推荐文章于 2025-06-09 19:10:54 发布

转载最新推荐文章于 2025-06-09 19:10:54 发布 · 294 阅读

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CC 4.0 BY-SA版权

原文链接：http://www.cnblogs.com/zhang-wenbin/p/10998239.html

本文介绍了一个.NET中用于类型映射的AutoMapper扩展方法，包括单个对象映射、集合列表映射等功能，适用于不同场景下的数据转换需求。

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using System;
using AutoMapper;
using System.Collections;
using System.Collections.Generic;

namespace Infrastructure
{
public static class AutoMapperExt
{
/// <summary>
/// 类型映射
/// </summary>
public static T MapTo<T>(this object obj)
{
if (obj == null) return default(T);

var config = new MapperConfiguration(cfg=>cfg.CreateMap(obj.GetType(),typeof(T)));
var mapper = config.CreateMapper();
return mapper.Map<T>(obj);
}

/// <summary>
/// 集合列表类型映射
/// </summary>
public static List<TDestination> MapToList<TDestination>(this IEnumerable source)
{
Type sourceType = source.GetType().GetGenericArguments()[0]; //获取枚举的成员类型
var config = new MapperConfiguration(cfg => cfg.CreateMap(sourceType, typeof(TDestination)));
var mapper = config.CreateMapper();

return mapper.Map<List<TDestination>>(source);
}

/// <summary>
/// 集合列表类型映射
/// </summary>
public static List<TDestination> MapToList<TSource, TDestination>(this IEnumerable<TSource> source)
{
var config = new MapperConfiguration(cfg => cfg.CreateMap(typeof(TSource), typeof(TDestination)));
var mapper = config.CreateMapper();

return mapper.Map<List<TDestination>>(source);
}

/// <summary>
/// 类型映射
/// </summary>
public static TDestination MapTo<TSource, TDestination>(this TSource source, TDestination destination)
where TSource : class
where TDestination : class
{
if (source == null) return destination;

var config = new MapperConfiguration(cfg => cfg.CreateMap(typeof(TSource), typeof(TDestination)));
var mapper = config.CreateMapper();
return mapper.Map<TDestination>(source);
}

}
}

转载于:https://www.cnblogs.com/zhang-wenbin/p/10998239.html