我们如何使用 `params object[] args` 将可变数量的参数传送到另一种方法？

Question

No example from the official docs page .

public class MyClass
{
    public static void Foo(params int[] args)
    {
        Bar(args) // error (I want to automatically pass args e.g.: Bar(args[0], args[1], args[2]...))
    }

    public static int Bar(int a, int b, int c, int d, int e) {
        return a + b + c + d + e;
    }

}

Answer 1

You can simply do like below

public static void Foo(params int[] args)
        {
            Bar(args); // error (I want to automatically pass args e.g.: Bar(args[0], args[1], args[2]...))
        }
        public static int Bar(params int [] values)
        {
            int total = 0;
            foreach (int value in values)
            {
                total += value;
            }
            return total;
            //return a + b + c + d + e;
        }

Answer 2

using System;
using System.Linq;
using System.Reflection;

class Program
{
    static void Main(string[] args)
    {
        Console.WriteLine(Foo(1, 2, 3, 4, 5));  //outputs 15
    }

    public static int Foo(params int[] args)
    {
        return (int)typeof(Program).GetMethod(nameof(Bar), BindingFlags.Public | BindingFlags.Static).Invoke(null, args.Select(v => (object)v).ToArray());
    }

    public static int Bar(int a, int b, int c, int d, int e)
    {
        return a + b + c + d + e;
    }
}