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using
System;using
System.Collections.Generic;using
System.Linq;using
System.Reflection;using
System.Text;using
System.Threading.Tasks;namespace
ConsoleApplication1{class
Program{static
void
Main(string[] args){People p = new
People() { Age = 28, name = new
Name() { FirstName = "zheng", LastName = "zhiqiang"
} };PeopleDto pDto = new
PeopleDto();pDto = AutoMapping<People, PeopleDto>.Convert(p, pDto);Console.WriteLine(string.Format("{0} {1} {2}", pDto.Age, pDto.FirstName, pDto.LastName));Console.Read();}}/// <summary>/// /// </summary>/// <typeparam name="T1">entity</typeparam>/// <typeparam name="T2">dto</typeparam>public
static
class
AutoMapping<T1, T2>where
T1 : new()where
T2 : new(){public
static
T2 Convert(T1 t1, T2 t2){var
dtoPiList = t2.GetType().GetProperties().Where(x => x.PropertyType.IsPublic).ToList();string
name;object
value;for
(int
i = 0; i < dtoPiList.Count(); i++){name = dtoPiList[i].Name;value = GetPropertyValue(t1, name);if
(null
== value) continue;dtoPiList[i].SetValue(t2, value, null);}return
t2;}private
static
object
GetPropertyValue(object
t1, string
name){Type t = t1.GetType();PropertyInfo[] pis = t.GetProperties();//查找当前对象是否包含需要转换的属性var
piTemp = pis.Where(x => x.Name == name).FirstOrDefault();//不存在递归查询if
(piTemp == null){foreach
(PropertyInfo pi in
pis){object
obj1 = pi.GetValue(t1, null);object
obj2 = GetPropertyValue(obj1, name);if
(obj2 != null) { return
obj2; }}}else{//判断是否忽略标记 var
cAttr = piTemp.GetCustomAttributes();foreach
(var
attr in
cAttr){var
tempAttr = attr as
AutoMappingAttributes;if
(tempAttr.Ignore) { return
null; }}//存在直接返回 return
piTemp.GetValue(t1, null);}return
null;}}public
class
AutoMappingAttributes : Attribute{public
bool
Ignore { get; set; }}public
class
Name{public
string
FirstName { get; set; }[AutoMappingAttributes(Ignore = true)]public
string
LastName { get; set; }}public
class
People{public
int
Age { get; set; }public
Name name { get; set; }}public
class
NameDto{public
string
FirstName { get; set; }public
string
LastName { get; set; }}public
class
PeopleDto{public
string
FirstName { get; set; }public
string
LastName { get; set; }public
int
Age { get; set; }}} |
原文：http://www.cnblogs.com/since87/p/3537065.html