这违背了我对复制字典的理解。说,我有以下代码:
public class MyClass
{
public string str1;
public MyClass(string s)
{
str1 = s;
}
}
Dictionary<string, MyClass> dic1 = new Dictionary<string, MyClass>();
dic1.Add("0", new MyClass("hello"));
//Make 'dic2' as a copy of 'dic1'
Dictionary<string, MyClass> dic2 = new Dictionary<string, MyClass>(dic1);
//Alter 'dic1'
dic1.ElementAt(0).Value.str1 += "!!!";
//I was expecting dic2 not to be altered, but IT IS!
Debug.Assert(dic2["0"].str1.Equals(dic1["0"].str1, StringComparison.Ordinal) == false); //Result is true for equality
我原本期望更改复制的字典我不会更改原始字典,但我的代码不是这样。
我做错了什么?
答案 0 :(得分:3)
正如科拉克所说,你做了一个浅薄的副本。您正在复制对内存中对象的引用,而不是对象本身。现在,对于每个键,您有两个对象的引用。
您想要的是深层副本,请参阅此处:What is the best way to clone/deep copy a .NET generic Dictionary<string, T>?