迭代数组时，在C＃中索引超出范围异常(Index out of Range exception in C# when iterating through an array)

 我有这个代码我用来创建一个程序，它取一个范围并输出到控制台的素数。 我有一个问题，我正在尝试迭代我构建的数组，因此循环应该只使用我的方法的返回值向控制台写入素数值。 我遇到的问题是我将第二个条件设置为numArray.Length但它似乎给了我Index out of Range Exception的Index out of Range Exception 。 我只是希望循环迭代numArray所有值，并在完成后确定最后一个值是否为素数时停止。 
 
public struct Prime
{
    public int x;


    // constructor for Prime
    public Prime(int x1)
    {
        x = x1;

    }

    public int IsPrime(int number)
    {
        int i;
        for (i = 2; i * i <= number; i++)
        {
            if (number % i == 0) return 0;
        }
        return 1;
    }
}

class Program
{
    static void Main(string[] args)
    {
        Console.WriteLine("Enter an Integer");
        int num1 = Convert.ToInt32(Console.ReadLine());
        Console.WriteLine("Enter a Second Integer of Greater Value");
    //    int num2 = 0;
        int num2 = Convert.ToInt32(Console.ReadLine());

    /*    if (num2temp > num1)
        {
            num2temp = num2;
        }
        else
        {
            Console.WriteLine("You Did Not Enter An Integer Greater Than the First Integer, Please Enter Your Integers Again.");
            Environment.Exit(0);
        }
    */    int index = 1;
        int[] numArray = new int[num2];
        for (int i = num1; i <= num2; i++)
        {
            numArray[index] = i;

            Console.WriteLine(" index: {0} assignment: {1}", index, i);
            index++;
            Console.WriteLine("index: {0}",index);
        }

        Console.WriteLine("value: {0}", numArray[40]);

    /*    Prime myprime = new Prime();

        if (myprime.IsPrime(numArray[12]) == 1)
        {
            Console.WriteLine("true");
        }
        else
        {
            Console.WriteLine("False");
        } */


        Prime myprime = new Prime();


       int value = 0;
        for (int y = 1; y <= num2; y++)
        {
            if (myprime.IsPrime(numArray[y]) == 1)
            {
                value = numArray[y];
                Console.Write("{0} \t", value);

            }

        } 

I have this code I'm using to create a program that takes a a range and outputs to the Console the prime numbers. I have one problem, I'm trying to iterate through the array I built so the loop should only write to the console the values that are prime using my method's return value. The problem I'm having is that I have the second condition set to numArray.Length but it seems to give me the Index out of Range Exception. I just want the loop to iterate through all values in the numArray and stop when it's done figuring out whether the last value is prime or not.
 
public struct Prime
{
    public int x;


    // constructor for Prime
    public Prime(int x1)
    {
        x = x1;

    }

    public int IsPrime(int number)
    {
        int i;
        for (i = 2; i * i <= number; i++)
        {
            if (number % i == 0) return 0;
        }
        return 1;
    }
}

class Program
{
    static void Main(string[] args)
    {
        Console.WriteLine("Enter an Integer");
        int num1 = Convert.ToInt32(Console.ReadLine());
        Console.WriteLine("Enter a Second Integer of Greater Value");
    //    int num2 = 0;
        int num2 = Convert.ToInt32(Console.ReadLine());

    /*    if (num2temp > num1)
        {
            num2temp = num2;
        }
        else
        {
            Console.WriteLine("You Did Not Enter An Integer Greater Than the First Integer, Please Enter Your Integers Again.");
            Environment.Exit(0);
        }
    */    int index = 1;
        int[] numArray = new int[num2];
        for (int i = num1; i <= num2; i++)
        {
            numArray[index] = i;

            Console.WriteLine(" index: {0} assignment: {1}", index, i);
            index++;
            Console.WriteLine("index: {0}",index);
        }

        Console.WriteLine("value: {0}", numArray[40]);

    /*    Prime myprime = new Prime();

        if (myprime.IsPrime(numArray[12]) == 1)
        {
            Console.WriteLine("true");
        }
        else
        {
            Console.WriteLine("False");
        } */


        Prime myprime = new Prime();


       int value = 0;
        for (int y = 1; y <= num2; y++)
        {
            if (myprime.IsPrime(numArray[y]) == 1)
            {
                value = numArray[y];
                Console.Write("{0} \t", value);

            }

        } 

原文：https://stackoverflow.com/questions/17017830