class 和 struct的区别

环境：net framework 4.5.2

struct是值传递（拷贝）

public class Test1 {
    public Test1(int x,int y){
        this.X = x;
        this.Y = y;
    }
    public int X {get;set;}
    public int Y {get;set;}
}
public struct Test2 {
    public Test2(int x,int y){
        this.X = x;
        this.Y = y;
    }
    public int X {get;set;}
    public int Y {get;set;}
}
public class Program {
    private void EditTest(Test1 T) {
        T.X = 500;
        T.Y = 1000;
    }
    private void EditTest(Test2 T) {
        T.X = 5000;
        T.Y = 10000;
    }
    static void Main(string [] args) {
        Test1 t1 = new Test1(10,20);
        Test2 t2 = new Test2(30,40);
        Program pro = new Program();
        pro.EditTest(t1);
        pro.EditTest(t2);
        Console.WriteLine("x = {0},y = {1}",t1.X,t1.Y); //X = 500, Y = 1000
        Console.WriteLine("x = {0},y = {1}", t2.X, t2.Y);//X = 30, Y = 40
    }
}