Question

我在这行代码中得到索引越界错误：

 ---------------------------vvvvv-------------------------------------------
 >>> char character = Convert.ToChar(temp[1].Substring(0, 1).ToLower()); <<<
 ---------------------------^^^^^-------------------------------------------

（整个代码块）

 List<string> entries = new List<string>();
 List<string> pre_entries = new List<string>((string[])Regex.Split(data.Substring(3, data.Length - 3), ",,"));
 foreach (string message in pre_entries)
 {
    string[] temp = message.Split(new string[] { "~~||~~" }, StringSplitOptions.RemoveEmptyEntries);
    if (temp.Length == 2)
    {
       char character = Convert.ToChar(temp[1].Substring(0, 1).ToLower());
       if (character == 'a' || character == 'b' || character == 'c' || character == 'd' || character == 'e' ||
           character == 'f' || character == 'g' || character == 'h' || character == 'i' || character == 'j' ||
           character == 'k' || character == 'l' || character == 'm' || character == 'n' || character == 'o' ||
           character == 'p' || character == 'q' || character == 'r' || character == 's' || character == 't' ||
           character == 'u' || character == 'v' || character == 'w' || character == 'x' || character == 'y' ||
           character == 'z')
    {
        entries.Add(ReplaceFirst(temp[1].Substring(13), ",", ": "));      
    }
    else if (temp.Length > 2)
    {
  290: char character = Convert.ToChar(temp[1].Substring(0, 1).ToLower());
       if (character == 'a' || character == 'b' || character == 'c' || character == 'd' || character == 'e' ||
           character == 'f' || character == 'g' || character == 'h' || character == 'i' || character == 'j' ||
           character == 'k' || character == 'l' || character == 'm' || character == 'n' || character == 'o' ||
           character == 'p' || character == 'q' || character == 'r' || character == 's' || character == 't' ||
           character == 'u' || character == 'v' || character == 'w' || character == 'x' || character == 'y' ||
           character == 'z')
       {
          for (int i = 0; i < temp.Length / 2; i++)
          {
              entries.Add(ReplaceFirst(temp[i + 1], ",", ": "));
          }
       }
       else
       {
           for (int i = 0; i < temp.Length / 2; i++)
           {
                entries.Add(ReplaceFirst(temp[i + 1].Substring(13), ",", ": "));
           }
       }
    }
    else { }
 }

假设我们进入此foreach循环的数据格式为List<string>，列表的数据类似于“554655 ~~~ || ~~~ 123454,2 User，blah 554655 ~~~ || ~~~ 123454,2 User2，stuff 545675 ~~~ || ~~~~ 567875，User3“。数据1,54134567851~~~||~~~的第一部分无关紧要，因为此示例中分隔符前的字符数是错误的。我不确定什么类型的消息设置了捕获但是每当我在应用程序（聊天应用程序）中出现错误时它都会显示此错误。

错误：异常

来源：SimpleMan

消息：索引超出了数组的范围。

StackTrace：位于X：\ Projects \ Visual Studio Projects \ c＃\ SimpleMan \ SimpleMan \ Program.cs：第290行的SimpleMan.Server.Message（）中

HResult：-2146233080

数据：System.Collections.ListDictionaryInternal

示例：

如果我在索引0的pre_entries列表中有一个字符串：“554655 ~~~ || ~~~ 123454,2 User，blah 554655 ~~~ || ~~~ 123454,2 User2，stuff 545675 ~~ 〜|| ~~~~ 567875，User3“

临时字符串数组将从第一个开始有4个条目，

（指数0）：“554655

（索引1）：“~~~ || ~~~ 123454,2 User，blah 554655”

（索引2）：“~~~ || ~~~ 123454,2 User2，stuff 545675”

（索引3）：“~~~ || ~~~~ 567875，User3”

有时其中一个字符串在temp中看起来像“12332354 ~~~ || ~~~ 546546，User，blah”这就是为什么我有if / then语句寻找这种可能的字符不匹配的原因情况。

Answer 1

看起来temp没有2个条目。在尝试检索之前确保它确实存在。

注意：这可能不言而喻，但数组的索引为0。这意味着，如果您想要第一个条目，请执行[0]而不是[1]。

聊天应用程序索引数组超出范围错误

1 个答案: