指数数组的边界之外。怎么能解决这个问题 [英] Index was outside the bounds of the array. how can solve this problem

问题描述

public string[,] getday()
    {
        string[,] monn = new string[31, 1];
        DateTime now = DateTime.Now;

        for (int i = 0; i < 31; i++)
        {
            int j = i + 1;
            
            
            monn[i, 0] = j.ToString();
            monn[i, 1] = j.ToString();
        }

        return monn;

    }

rotected void Page_Load(object sender, EventArgs e)
    {

     string[,] day = objUtility.getday("EN");
     response.write(day[i, 1]);
}

此代码显示此错误：System.IndexOutOfRangeException：索引超出了数组的范围。

我怎么能解决这个问题??

This code show this error: System.IndexOutOfRangeException: Index was outside the bounds of the array.
how can i solve this problem??

推荐答案

你的数组定义如下：

Your array definition looks like this:

string[,] monn = new string[31, 1];

这意味着最高秒index是 0 ，因为 1 是长度。但是，在 for 循环中，您使用 1 作为第二个索引，它超出了数组的范围，因为最高的第二个索引是 0 ：

This means that the highest second index is 0, because 1 is the length. However, inside your for loop, you are using 1 as second index which is outside the bounds of the array because the highest second index is 0:

monn[i, 0] = j.ToString();
monn[i, 1] = j.ToString();

所以，你有用替换新字符串[31,1] 新字符串[31,2] 以确保最高的第二个索引是 1 ，这可以避免错误。

So, you have to replace new string[31, 1] with new string[31, 2] to make sure the highest second index is 1, which avoids the error.

new string[31, 1]

括号中的数字是特定维度中元素的数量，因此在第二个维度中您有1个元素，但您尝试索引2 - 索引为0的索引1和索引1的索引...

括号中的数字再次是元素的数量，因此最大索引将是数字减1 - 在您的情况下为0，什么意味着索引1超出范围！

The numbers in the bracket are the number of the elements in the specific dimension, so in the second dimension you have 1 lement, but you try to index two - one with index 0 and one with index 1...
Again the numbers in the bracket are the number of the elements, so the max index will be the number minus 1 - in your case 0, what means that index 1 is out of range!

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