为什么我的 Console.WriteLine(", '{0}'", String); 总是出现 System.IndexOutOfRangeException陈述?

Why do I keep getting a System.IndexOutOfRangeException at my Console.WriteLine(", '{0}'", String); statement?

我正在 Visual Studio 中使用 C# 开发一个网络爬虫,它将 Excel 电子表格中的 URL 读取到一个字符串数组中,稍后将通过这些字符串访问网站以从中抓取信息.我现在正在调试它,但出于某种原因,每当我尝试将字符串打印到控制台时,都会出现超出范围的异常。

我正在使用 IronXL Excel 接口库来读写 from/to Excel 电子表格。并且异常不断发生在“Console.WriteLine(”, '{0}'”, String);”语句位于。

以下是涉及的class个变量:

    public static int NUMBER_OF_ENTRIES = 90;
    public static String [] URLs = new String [NUMBER_OF_ENTRIES];
    public static String PATH_OF_IO_DOC = "C:\Users\Owner\Desktop\List of Clubs.xlsx";
    public static String SHEET_NAME = "Sheet1";

这里是涉及到的方法的代码:

private void buttonGetURLs_Click(object sender, EventArgs e)
    {
        //read the URLs from the excel doc to an array of strings
        WorkBook wb = WorkBook.Load(PATH_OF_IO_DOC);
        WorkSheet ws = wb.GetWorkSheet(SHEET_NAME);

        int rowCount = NUMBER_OF_ENTRIES;
        //start at row 2 to skip the first header
        for (int i = 2; i < rowCount; i++)
        {
            //skip header lines
            if (!((rowCount == 13) || (rowCount == 16) || (rowCount == 31) || (rowCount == 32) || (rowCount == 33)))
            {
                //get value by cell address
                //string address_val = ws["A" + rowCount].ToString();
                //get value by row and column indexing
                string index_val = ws.Rows[rowCount].Columns[1].ToString();

                //read each cell's value to the array of URLs
                URLs[rowCount] = index_val;
                
                //check to make sure correct values are collected
                Console.WriteLine(", '{0}'", index_val);
            }
        }
    }

这是错误的行,因为 URL 将达到 rowCount-1 基于 0:

URLs[rowCount] = index_val;

您可能想要使用 i 索引

URLs[i] = index_val;