reference website :https://www.cnblogs.com/besos/p/13384764.html
1.引用AutoMapper包
2.定义两个实体类
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public class ModelA { public string UserId { get; set; } public string Remark { get; set; } } public class ModelB { public string User_id { get; set; } public string Remark_msg { get; set; } public int Lab_id { get; set; } } |
3.定义映射规则，并映射
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public List<ModelB> MappingModeB(List<ModelA> data, int lab_Id) { MapperConfiguration config = new MapperConfiguration ( mp => mp.CreateMap<ModelA, ModelB>() // 给config进行配置映射规则 .ForMember(nclog => nclog.User_id, clog => clog.MapFrom(log => log.UserId == null ? "" : log.UserId)) // 指定映射字段 .ForMember(nclog => nclog.Remark_msg, clog => clog.MapFrom(log => log.Remark)) .ForMember(nclog => nclog.Lab_id, clog => clog.MapFrom(log => lab_Id)) ); var Modellogs = config.CreateMapper(); return Modellogs.Map<List<ModelB>>(data); //映射 } |
C#实现对象映射
ref:https://blog.csdn.net/u010655942/article/details/49535723
有时候会遇到这样的问题，两个对象具有很多相同的属性，已知一个对象，要给另外一个对象赋值，这时候需要每个属性逐一赋值，会比较麻烦。
如果不考虑性能问题的话，可以使用对象映射的方式来赋值，实际上是利用了反射的机制，达到动态生成对象和动态类型转换的目的。
实现代码如下：
using System;
using Newtonsoft.Json;
namespace ConsoleApplicationTest
{
class Program
{
static void Main(string[] args)
{
string s = string.Empty;
var person = new Person { Name = "张三", Age = "12", Birthday = "2015/10/31 19:56:30" };
var student = EntityMapper<Student, Person>(person);
s = JsonConvert.SerializeObject(student);
Console.WriteLine(s);
Console.ReadKey();
}
static TTo EntityMapper<TTo, TFrom>(TFrom from)
{
var to = Activator.CreateInstance<TTo>();
var tTo = typeof(TTo);
var psFrom = typeof(TFrom).GetProperties();
foreach (var pFrom in psFrom)
{
var vFrom = pFrom.GetValue(from);
if (vFrom != null)
{
var pTo = tTo.GetProperty(pFrom.Name);
if (pTo != null)
{
var pToType = pTo.PropertyType;
if (pToType.IsGenericType && pToType.GetGenericTypeDefinition() == typeof(Nullable<>))
{
var vTo = Convert.ChangeType(vFrom, pToType.GetGenericArguments()[0]);
pTo.SetValue(to, vTo);
}
else
{
var vTo = Convert.ChangeType(vFrom, pTo.PropertyType);
pTo.SetValue(to, vTo);
}
}
}
}
return to;
}
public class Person
{
public string Name { get; set; }
public string Age { get; set; }
public string Birthday { get; set; }
}
public class Student
{
public string Name { get; set; }
public int Age { get; set; }
public DateTime Birthday { get; set; }
}
}
}
注意，这段代码没有经过严格测试，请谨慎使用。
如果真实项目需要对象映射的功能，推荐使用AutoMapper
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版权声明：本文为CSDN博主「717606641」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/u010655942/article/details/49535723