c#学习笔记-深度复制 与浅度复制

关于值类型和援用类型：
浅度复制(shallowcopy)只复制值类型(char,int)的值，而关于援用类型不会复制，浅度复制能够经过派生于System.Object的MemberwiseClone()办法来完成，这是一个受维护的办法。由于他并没有思索援用类型成员，因而新对象的援用成员就会指向源对象中的相同成员援用的对象
假如要创立成员的新实例(复制值，而不是复制援用)就需求用到深度复制(deepcopy)
深度复制需求完成一个ICloneable接口，假如运用这个接口需求完成它包含的Clone()办法，这个办法返回一个System.Object的值，
下面看下浅度复制：
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1publicclassCompany
2{
3publicstringvalue{get;set;}
4}
5
6publicclassPhone
7{
8publicstringcolor{get;set;}
9
10publicCompanycompany=newCompany();
11
12publicPhone(stringnewCompany)
13{
14company.value=newCompany;
15}
16
17publicobjectgetCopy()
18{
19returnMemberwiseClone();
20}
21}
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1staticvoidMain(string[]args)
2{
3Phonephone=newPhone(“xiaomi”);
4phone.color=”red”;
5Phonephone1=(Phone)phone.getCopy();
6Console.WriteLine($”phonecompany:{phone.company.value}color:{phone.color}”);
7Console.WriteLine($”phone1company:{phone1.company.value}color:{phone1.color}”);
8
9Console.WriteLine(“浅度复制修正新对象的值”);
10
11phone1.company.value=”huawei”;
12phone1.color=”green”;
13Console.WriteLine($”phonecompany:{phone.company.value}color:{phone.color}”);
14Console.WriteLine($”phone1company:{phone1.company.value}color:{phone1.color}”);
15Console.ReadKey();
16
17}
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实验现象：
浅度复制在后援用类型修正后，原对象也跟着发作了改动
修正这个问题，能够运用深度复制
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1publicclassCompany
2{
3publicstringvalue{get;set;}
4}
5
6publicclassPhone:ICloneable
7{
8publicstringcolor{get;set;}
9
10publicCompanycompany=newCompany();
11
12publicPhone(stringnewCompany)
13{
14company.value=newCompany;
15}
16
17publicobjectgetCopy()
18{
19returnMemberwiseClone();
20}
21
22publicobjectClone()
23{
24PhonenewPhone=newPhone(company.value);
25returnnewPhone;
26//newPhone.company.value=this.company.value;
27
28}
29}
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1staticvoidMain(string[]args)
2{
3Phonephone=newPhone(“xiaomi”);
4phone.color=”red”;
5Phonephone1=(Phone)phone.Clone();
6Console.WriteLine($”phonecompany:{phone.company.value}color:{phone.color}”);
7Console.WriteLine($”phone1company:{phone1.company.value}color:{phone1.color}”);
8
9Console.WriteLine(“浅度复制修正新对象的值”);
10
11phone1.company.value=”huawei”;
12phone1.color=”green”;
13Console.WriteLine($”phonecompany:{phone.company.value}color:{phone.color}”);
14Console.WriteLine($”phone1company:{phone1.company.value}color:{phone1.color}”);
15Console.ReadKey();
16
17}