无法将[]的索引应用于类型' Array''的表达式 [英] Cannot apply indexing with [] to an expression of type 'Array''

问题描述

对于下面的代码，我得到了无法将[]索引应用于'Array类型的表达式"的信息.目的是创建一个计算器模板，然后调用这些方法来运行各种操作.在标记为//HERE的区域中出现错误.请提供帮助.我是涉及C#编码的新手，因此，感谢所有帮助，如果有人也可以向我解释这个问题，我希望获得帮助.谢谢

I am getting the "Cannot apply indexing with [] to an expression of type 'Array''" for the below code.. Aim is to create a calculator template and then call these methods to run the various operations. Errors are coming in the areas marked //HERE.. Please help. I am a newbie when it comes to c# coding, so, all help is appreciated and I would like it if someone could explain me the issue too. Thanks

private static Array NumberFeedLengthDecider()
{
    Console.WriteLine("Please enter how many numbers that you would like to add.");
    int i = Convert.ToInt32(Console.ReadLine());
    int[] numbers = new int[i];

    return numbers;
}
private static int NumberFeed(Array numbers)
{
    Console.WriteLine("Please enter the numbers one by one, each followed by the 'Enter' key.");
    int i = numbers.Length;

    for (int counter = 0; counter < i; counter++)
    {
        int temp = Convert.ToInt32(Console.ReadLine());
        numbers[counter] = temp; //HERE
    }
    return i;
}
private static void NumberDisplay(Array numbers)
{
    Console.WriteLine("The numbers you have entered are: ");
    int i = (numbers.Length);

    for (int x = 0; x < i; x++)
    {
        Console.WriteLine(numbers[x]); //HERE
    }
}

基本上，我想创建一种方法来确定要在其上运行操​​作的数字数，这是第一个数字(numberFeedLengthDecider)，然后是另一种将数字输入该数组的方法(NumberFeed)，然后是另一种方法显示该组数字的方法(NumberDisplay).但由于某些原因，我似乎无法使其正常工作

Basically, I want to create a method for deciding the number of numbers the operations are to be run on which is the first one (numberFeedLengthDecider), then another method to feed the numbers into that array (NumberFeed), and then another method to display that group of numbers (NumberDisplay). but for some reason, I can't seem to get it to work

推荐答案

Array 是数组的基类，它的元素不是强类型"的.您可以在其中放置任何对象.

Array is the base class for arrays, its elements aren't "strongly typed"; you can put any object in it.

由于您似乎只在处理 int 元素，因此应该在现在使用 Array 的情况下使用 int [] .然后，可以使用[]索引访问元素，并确保每个元素都是要启动的 int .

Since you seem to be dealing with int elements only, you should be using int[] where you now use Array. You can then access elements with the [] indexing, and you ensure that each element is an int to boot.

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