[C#] Callback Func

예제 1

namespace Cshop_v6._0
{
    delegate int GetResultDelegate();

    class Target
    {
        public void Do(GetResultDelegate getResult)
        {
            Console.WriteLine(getResult()); // 콜백 메서드 호출
        }
    }

    class Source
    {
        public int GetResult() // 콜백 용도로 전달된 메서드
        {
            return 10;
        }

        public void Test()
        {
            Target target = new Target();
            target.Do(new GetResultDelegate(this.GetResult));
        }
    }
}

예제 2

namespace Cshop_v6._0
{
    delegate int GetResultDelegate(int x, int y);

    class Target
    {
        public void Do(GetResultDelegate getResult, int x, int y)
        {
            Console.WriteLine(getResult(x, y));
        }
    }

    class Source
    {
        public static int GetResult(int x, int y)
        {
            return x * y;
        }

        public static void Main()
        {
            Target target = new Target();
            GetResultDelegate gd = GetResult;
            target.Do(gd, 5, 10);
        }
    }
}