如何在C#中为类定义Console.WriteLine行为？

Question

我有一节课:

class Rect{
    int x;
    int y;
    public Rect(int x, int y){
        this.x = x;
        this.y = y;
    }

}

我希望这种情况发生:

Console.WriteLine(new Rect(12,12));
>>> <Rect with x=12, y=12>

我怎么能这样做？

Answer 1

你可以覆盖ToString()方法:

class Rect{
    int x;
    int y;
    public Rect(int x, int y){
        this.x = x;
        this.y = y;
    }

    public override string ToString()
    {
        return "("+x.ToString()+","+y.ToString()+")";
    }

}