有的場合下，我們需要淺複製便能解決問題，因為我們複製出來的實例，仍然引用原來的初始物件。但是有的時候，這是不夠的，因為我們複製出來的實例，還要對引用型別做出局部值的修改調整，保證不能影響初始物件！
這便要求深度複製了！
需求是這樣的：
首先看一下淺複製為什麼不能滿足我們的要求：我們要複製簡歷，並且複製出的版本只與模板簡歷的求職意向中的公司名稱不一致。
我們的第一版程式碼是這樣的：
簡歷模型1.0版本
public class ResumeInfo1:ICloneable
{
public ResumeInfo1(string name, string telephone, EducationInfo educationInfo,WantedJob1 job)
{
this._name = name;
this._telephone = telephone;
this._educationInfo = educationInfo;
this._wantedJob = job;
}
private string _name;
public string name
{
get { return this._name; }
}
private string _telephone;
public string telephone
{
get { return _telephone; }
}
private EducationInfo _educationInfo;
public EducationInfo educationInfo
{
get { return _educationInfo; }
}
private WantedJob1 _wantedJob;
public WantedJob1 WantedJob
{
get { return _wantedJob; }
}
public object Clone()
{
return this.MemberwiseClone();
}
}裡面嵌套的子類別教育背景物件EducationInfo
public class EducationInfo
{
public string schoolName { get; set; }
public DateTime enrollTime { get; set; }
public DateTime leaveTime { get; set; }
}還有嵌套的物件WantedJob1:
public class WantedJob1
{
public string companyName { get; set; }
public double eanrings { get; set; }
}我們在客戶端使用下：
EducationInfo educationInfo = new EducationInfo();
WantedJob1 wantedJob = new WantedJob1();
ResumeInfo1 templateResume = new ResumeInfo1("qaz", "18810002000", educationInfo, wantedJob);
educationInfo.enrollTime = new DateTime(2010, 7, 1);
educationInfo.leaveTime = new DateTime(2015, 1, 1);
educationInfo.schoolName = "wsx";
wantedJob1.companyName = "edc";
wantedJob1.eanrings = 1000;
//假定各个简历版本，仅仅companyName属性值不同。
var res1 = templateResume.Clone();
(res1 as ResumeInfo1).WantedJob.companyName = "baidu";
var res2 = templateResume.Clone();
(res1 as ResumeInfo1).WantedJob.companyName = "ali";但是我們得到了公司名稱都是”ali”
#這是典型的淺複製！
無法滿足公司名稱要區分的要求，繼續修改，變成深度複製：
public class ResumeInfo2:ICloneable
{
public ResumeInfo2(string name, string telephone, EducationInfo educationInfo,WantedJob2 job)
{
this._name = name;
this._telephone = telephone;
this._educationInfo = educationInfo;
this._wantedJob = job;
} //
private void cloneJob(WantedJob2 job)
{
this._wantedJob = job.Clone() as WantedJob2;
} private string _name;
public string name
{
get { return this._name; }
}
private string _telephone;
public string
telephone
{
get { return _telephone; }
}
private EducationInfo _educationInfo;
public EducationInfo educationInfo
{
get { return _educationInfo; }
}
private WantedJob2 _wantedJob;
public WantedJob2 WantedJob
{
get { return _wantedJob; }
}
public object Clone()
{
cloneJob(this._wantedJob);
return new ResumeInfo2(_name,_telephone,_educationInfo,_wantedJob);
}
}求職意願物件2.0:
//WantedJob2 实现接口
public class WantedJob2:ICloneable
{
public string companyName { get; set; }
public double eanrings { get; set; }
public object Clone()
{
return this.MemberwiseClone();
}
}客戶端呼叫：
//此处我们需要对WantedJob做深复制处理。
EducationInfo educationInfo = new EducationInfo();
WantedJob2 wantedJob = new WantedJob2();
ResumeInfo2 templateResume = new ResumeInfo2("qaz", "18810002000", educationInfo, wantedJob);
educationInfo.enrollTime = new DateTime(2010, 7, 1);
educationInfo.leaveTime = new DateTime(2015, 1, 1);
educationInfo.schoolName = "wsx";
wantedJob.companyName = "edc";
wantedJob.eanrings = 1000;
//假定各个简历版本，仅仅companyName属性值不同。
var res1 = templateResume.Clone();
(res1 as ResumeInfo2).WantedJob.companyName = "baidu";
var res2 = templateResume.Clone();
(res2 as ResumeInfo2).WantedJob.companyName = "ali";得到不同的公司名稱！深度複製成功！
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