创建新的实体copy--反射，以免引用类型赋值覆盖遇到问题！急求高手解答！

[dicklee1214]

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Snphk.App.Common;
using AppCommon;
using Snphk.App.DDM.BasicInfo;
using System.Runtime.Serialization;
using System.Reflection;

namespace Snphk.App.DDM.AcceptHailOil
{
public partial class DDM_HairOilLine : IValid, IEntity
{
public DDM_HairOilLine GetEntityClone()
{
DDM_HairOilLine rtnHairOilLine = new DDM_HairOilLine();
PropertyInfo[] entityPropertiesCopy = rtnHairOilLine.GetType().GetProperties();
PropertyInfo[] entityProperties = this.GetType().GetProperties();
foreach (PropertyInfo pi in entityPropertiesCopy)
{
for (int i = 0; i < entityProperties.Length; i++)
{
if (pi.Name == entityProperties[i].Name)
{
pi.SetValue(null, entityProperties[i].GetValue(this, null), null);
break;
}
}
}
return rtnHairOilLine; }
}
}

这一句总出错pi.SetValue(null, entityProperties[i].GetValue(this, null), null);
“报错：System.ArgumentException: 未找到属性设置方法。”
调用方式：hoCopy = hairOilLineTemp.GetEntityClone();
hoCopy 为未赋值DDM_HairOilLine类型 对象，hairOilLineTemp为源
DDM_HairOilLine类型 对像
-----------------请问这个问题是怎么回事，该怎么解决！

[wuyq11]

propertyInfo.SetValue(目标对象,entityProperties[i].GetValue(this, null), null);

propertyInfo.SetValue(rtnHairOilLine ,entityProperties[i].GetValue(this, null), null);

[zl194]

GZ

[showlin]

该属性没有set访问器

[zhujiazhi]

pi.SetValue(rtnHairOilLine, entityProperties[i].GetValue(this, null), null);

[我姓区不姓区]

try:
pi.SetValue(rtnHairOilLine, entityProperties[i].GetValue(this, null), null);

[wartim]

pi.SetValue(null, entityProperties[i].GetValue(this, null), null);

object=null?那你想给哪个对象设置这个属性啊