C＃Dictionary在添加后找不到密钥

Question

我制作了一个简单的程序，它将读取由新行分割的文本文件中的函数，并像编程语言一样执行它。这是代码：

using System;
using System.IO;
using System.Text;
using System.Linq;
using System.Threading;
using System.Collections.Generic;

namespace My_Project
{
class Program
{
    public static Dictionary<string, string> variables = new Dictionary<string, string>();
    static void Main(string[] args)
    {            
        //string code = args[0];
        string code = File.ReadAllText(@"TEXT FILE LOCATION HERE");
        var lines = code.Split('\n');
        foreach (string line in lines)
        {
            char[] lineInCharArray = line.ToCharArray();
            if (lineInCharArray[0] == '-')
            {
                string variablename = (lineInCharArray[1]).ToString();
                string value = line.Replace("-" + variablename, "");
                Console.WriteLine("VARIABLE DEFINED: " + variablename + " - " + value);
                variables.Add(variablename, value);
            }
            if (lineInCharArray[0] == '*')
            {
                if (lineInCharArray[1] == '*')
                {
                    try
                    {
                        string requestedVariable = line.Replace("**", "");
                        Console.WriteLine("REQUESTED VARIABLE: " + 
requestedVariable);
                        string printedValue = variables[requestedVariable];
                        Console.WriteLine(printedValue);
                    }
                    catch
                    {
                        Console.WriteLine("ERROR: ");
                        List<string> hhh = variables.Keys.ToList();
                        foreach (string item in hhh)
                        {
                            Console.WriteLine("--: " + item);
                        }
                    }
                }
                else
                {
                    string printedValue = line.Replace("*", "");
                    Console.WriteLine(printedValue);
                }
            }
            if (lineInCharArray[0] == '+')
            {
                string variable = variables[lineInCharArray[1].ToString()];
                Int32 variableInInt = Convert.ToInt32(variable);
                Int32 incrementation = Convert.ToInt32(line.Replace("+" + variable, ""));
                for (int i = 0; i < incrementation + 1; i++)
                {
                    variableInInt++;
                }
                variables[lineInCharArray[1].ToString()] = variableInInt.ToString();
            }
        }
        Console.ReadLine();
    }
}
}

输入（文本文件）

-a12 // Set a variable named 'a' and set the value to 12
-j8  // Set a variable named 'j' and set the value to 8
**j // Print the value of the variable of 'j'
**a // Print the value of the variable of 'a'

问题：

代码输出以下内容：

VARIABLE DEFINED: a - 12
VARIABLE DEFINED: j - 8
REQUESTED VARIABLE: j
ERROR:
--: a
--: j
REQUESTED VARIABLE: a
12

代码已成功分配a到12和j到8，但无法打印j（a很好）。它表示即使程序添加j，也无法在字典中找到键j。解决方案应输出以下内容：

VARIABLE DEFINED: a - 12
VARIABLE DEFINED: j - 8
REQUESTED VARIABLE: j
8
REQUESTED VARIABLE: a
12

Answer 1

在我在评论中提出的问题以及您在评论中发布的答案之后，很明显您所拥有的是\r末尾的换行符（j），所以看似"j"的内容并不完全"j";相反，它是"j\r"。

因此，您需要从控制字符中清除从文件中读取的每一行。实际上，您应该从任何不属于有效标识符的字符中清除它们。