自己写的AutoMapper

浏览数：16 / 时间：2015年06月11日

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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; }
}
 
}