委托变量不会在intellisense中显示 [英] Delegate variable dosen't show in intellisense

问题描述

我有一个控制台应用程序，我有一个名为class1.cs的类，我正在尝试在其中实现

委托，如代码所示。

I have a console application in that i have one class named class1.cs and i am trying to implement
delegates in it as shown in the code.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;


namespace testingconsoleapplication
{
     delegate int adding(int a, int b);

    class test
    {
        public adding sum = add;


        private static int add(int i, int j)
        {
            return i + j;
        }
        private static int sub(int i, int j)
        {
            return i - j;
        }
    }
}

这是我的program.cs文件

while this is my program.cs file

namespace testingconsoleapplication
{
    class Program
    {
        static void Main(string[] args)
        {
            int i = 2, j=1;
            test a = new test();
            Console.WriteLine(a.sum.Invoke(i,j));
            Console.ReadLine();
        }
    }
}

现在，它只适用于一种方法，当我尝试添加另一个方法来委托变量首先它不会在intellisense中显示sum变量，其次它允许添加第二个方法。如何添加第二个方法？

Now,it's working fine for only one method and when i try to add another method to delegate variable firstly it dosen't show the "sum" variable in intellisense and secondly it dosent allow to add second method.How can i add second method ?

推荐答案

你确定吗？它适用于我，（虽然你不需要调用调用）

Are you sure? It works fine for me, (although you don't need the Invoke call)

        int i = 2, j = 1;
        test a = new test();
        Console.WriteLine(a.sum.Invoke(i, j));
        Console.WriteLine(a.nsum.Invoke(i, j));
        Console.WriteLine(a.sum(i, j));
        Console.WriteLine(a.nsum(j, i));
    ...
delegate int adding(int a, int b);

class test
    {
    public adding sum = add;
    public adding nsum = sub;

    private static int add(int i, int j)
        {
        return i + j;
        }
    private static int sub(int i, int j)
        {
        return i - j;
        }
    }

Intellisense向我显示总和和 nsum 委托......

Intellisense shows me both the sum and nsum delegates...

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