C# 错误索引超出数组范围（Visual Studio、Winform、.NET Framework 4.6）

Question

我有一个生成密钥的程序，但我总是遇到 "Index was outside the bounds of the array" 异常。

我的代码是这样的：

   private string generate()
        {
            try
            {
                int block = 11;
                int size = 0;
                string content = "zQzhPeWFXZG53N2tGTGlvmQzTm9UTU91NG9DNndySERrOEsveFpMQ3ExUGlo"; //this key gets normally decrypted with aes but that is not the problem

                block = Convert.ToInt32(content.Split(':')[2]);
                size = Convert.ToInt32(content.Split(':')[1]);
                content = content.Split(':')[0];

                Random r = new Random();
                char[] blocked = new char[block];

                for (int i = 0; i < block; i++)
                {
                    blocked[i] = content[r.Next(content.Length)];
                }

                string key = "";
                while (this.getValue(key, content, blocked) <= (size - (content.Length)))
                {
                    key += content[r.Next(content.Length)];
                }
                key += content[size - this.getValue(key, content, blocked)];

                key = new string(blocked) + key;
                return key;
            }
            catch (Exception ex)
            {
                return ex.Message;
            }
        }

我认为错误出在 for 或 while 循环中，但奇怪的是，在我的电脑上它可以工作，但在我朋友的电脑上它不工作，我尝试了所有方法，但我不知道如何我可以适应这个错误。

有人知道解决这个问题的方法吗？

Answer 1

好吧，看来您为给定的 content 字符串拆分了错误的字符。你可以看看这个fiddle：https://dotnetfiddle.net/Ubklbk

使用您的原始字符串：

using System;

public class Program
{
    public static void Main()
    {
                int block = 11;
                int size = 0;
                //string content = "zQzhPeWFXZG:5:3:2tGTGlvmQzTm9UTU91NG9DNndySERrOEsveFpMQ3ExUGlo"; //this key gets normally decrypted with aes but that is not the problem
                string content = "zQzhPeWFXZG532tGTGlvmQzTm9UTU91NG9DNndySERrOEsveFpMQ3ExUGlo"; //this key gets normally decrypted with aes but that is not the problem
                string[] split =content.Split(':');
                foreach(var item in split)
                {
                    Console.WriteLine(item);
                }
                block = Convert.ToInt32(content.Split(':')[2]);
                size = Convert.ToInt32(content.Split(':')[1]);
                content = content.Split(':')[0];
                Console.WriteLine(block);
                Console.WriteLine(size);
                Console.WriteLine(content);
    }
}

输出：

zQzhPeWFXZG532tGTGlvmQzTm9UTU91NG9DNndySERrOEsveFpMQ3ExUGlo
Run-time exception (line 16): Index was outside the bounds of the array.

Stack Trace:

[System.IndexOutOfRangeException: Index was outside the bounds of the array.]
   at Program.Main() :line 16

在下一个运行中，我添加了一个 : 分隔符，返回我的字段类型，得到以下输出：

zQzhPeWFXZG
5
3
2tGTGlvmQzTm9UTU91NG9DNndySERrOEsveFpMQ3ExUGlo
3
5
zQzhPeWFXZG

所以基本上，问题在于您使用 : 分隔符拆分原始字符串的方式。

C# 错误索引超出数组范围（Visual Studio、Winform、.NET Framework 4.6）

C# Error Index was outside the bounds of the array (Visual Studio, Winform, .NET Framework 4.6)

c#

visual-studio

indexoutofrangeexception