C#简单实现回调函数

//C# 简单实现回调函数
Test.Main();
public class Test //用户层，执行输入等操作
{
    public static void Main()
    {

        Calculate cc = new Calculate();
        Function fc = new Function();
        int result1 = cc.CalculateTest(2, 3, fc.GetSum);
        Console.WriteLine("调用了开发人员的加法函数，处理后返回结果：" + result1);
        int result2 = cc.CalculateTest(2, 3, fc.GetMulti);
        Console.WriteLine("调用了开发人员的乘法函数，处理后返回结果：" + result2);
        Console.ReadKey();
    }
}
public class Function
{
    public int GetSum(int a,int b)
    {
        Console.WriteLine("进入加法运算");
        int c = a + b;
        Console.WriteLine("加法运算完毕");
        return c;
    }
    public int GetMulti(int a, int b)
    {
        Console.WriteLine("进入乘法运算");
        int c = a * b;
        Console.WriteLine("乘法运算完毕");
        return c;
    }
}
public class Calculate
{
    public delegate int CalculateWay(int a, int b);
    public int CalculateTest(int num1, int num2, CalculateWay calculate)
    {
        Console.WriteLine("收到传入参数：" + num1 + "and" + num2);
        int c = calculate(num1,num2);
        Console.WriteLine("传入方法执行完毕");
        return (c);
    }
}