流读取器中出现无法识别的字符

Question

我的目标也是收集重复的字符并在文本文件中缩短它们，所以， aaaaa 将导致 5a 和/或 aabbb 将导致 2a3b

在行尾，循环应该检测到 /n 字符，然后结束该行。问题是它找到了一个在原始文本文件和新行之前的新 CoMpReSsEd 中未出现的字符。

如果我在文件中给程序这个，

aaaaa
bbccc

它会在新文件中输出这个，

5a1
2b3c1
1

我认为这可能是一些流氓空间，但我检查了文件，在 1 之后什么都没有。 然后我想这可能是一个空值，所以我添加了一个 if 语句来检查 0x0，它没有返回任何内容。

        char CurrentCharacter = ' ';
        char PreviousCharacter = ' ';
        bool newline = false;
        bool FoundSymbol = false;
        string CurrentLine = "";

        int Counter = 1;

        for (int y = 0; y < Lines-1; y++) //minus one line as one is meta data
        {
            newline = false;
            CurrentCharacter = ' ';
            PreviousCharacter = 'n'; //n just means ignore character before basically this is appropiate when a new line happens or a different symbol
            CurrentLine = "\n";

            Console.WriteLine("New Line starting");
            while (newline == false)
            {
                //reading lines

                FoundSymbol = false;

                Console.WriteLine("Finding new Symbol");
                Counter = 1;

                while (FoundSymbol == false)
                {
                    CurrentCharacter = (char)FileReader.Read();

                    if (CurrentCharacter == PreviousCharacter)
                    {
                        //same character ++ to counter
                        Counter++;

                        Console.WriteLine("Same Character: {0} {1}" ,Counter ,CurrentCharacter);
                    }

                    else if (PreviousCharacter == 'n')  //is previous character as this what its comparing it too
                    {
                        //nothing its just reading the first character of the new symbol
                        //theres probably a better way than using n as a placeholder
                        Console.WriteLine("Placeholder Previous");
                        Console.WriteLine("Current Char: {0}", CurrentCharacter);
                    }

                    else if (CurrentCharacter == '\n')
                    {
                        //theres a new line so create symbol for current character and count and reset loop
                        CurrentLine += Convert.ToString(Counter) + PreviousCharacter;
                                                   
                        newline = true;
                        FoundSymbol = true;

                        Console.WriteLine("End of Line");
                    }

                    else if (CurrentCharacter != PreviousCharacter)
                    {
                        CurrentLine += Convert.ToString(Counter) + PreviousCharacter;
                        //are not the same so new character symbol is added to list
                        Console.WriteLine("Different Symbol: {0}" ,CurrentCharacter);

                        FoundSymbol = true;
                    }

                    else
                    {
                        Console.WriteLine("What");
                    }

                    
                    PreviousCharacter = CurrentCharacter;
                    Console.WriteLine("New Previous character: {0}" ,PreviousCharacter);

                    Console.ReadLine();
                }
           
            }

            Console.WriteLine("Finished Line {0}: {1}", y, CurrentLine);
            Console.ReadLine();

            File.AppendAllText(SaveLocation ,CurrentLine);
        }

        Console.WriteLine("Done");
        Console.ReadLine();
    }

这是它的代码，忽略与元数据有关的任何内容，因为这只是第一行上的一些数字，这些数字被复制并工作正常，我的注释已磨损，因此如果您愿意，请忽略这些数字。 这是问题发生处的输出。

然后，我在 CurrentCharacter != PreviousCharacter 的同一个 if 语句上添加了第二个输出，如此处所示，试图找出它实际上是什么。

                    else if (CurrentCharacter != PreviousCharacter)
                    {
                        CurrentLine += Convert.ToString(Counter) + PreviousCharacter;
                        //are not the same so new character symbol is added to list
                        Console.WriteLine("Different Symbol: {0} Test: {1}", CurrentCharacter ,CurrentCharacter);

                        FoundSymbol = true;
                    }

然后，这给了我这个输出

显然，它完全删除了之前输出的文本，所以我最终变得更加困惑，而我现在就在这里。任何帮助将不胜感激，抱歉，如果这写得不好，老实说，我有点害怕在这里问问题，lmao。