Colorize C#控制台无法正常工作

Question

我需要按方法对字符串进行着色，所以我使用Console.ForegroundColor属性并在稍后编写文本，但我在某处犯了一个错误，所以所有行都是一种颜色。或者有更好的解决方案？我需要用&0-&f (十六进制)对字符串进行着色，并将其输出到控制台，以下是我的解决方案：

    public static void ColorizeConsoleMessage(string message)
    {
        var matches = Regex.Matches(message, "&+[0-9a-f]");
        var split = Regex.Split(message, "&+[0-9a-f]");
        var def = Console.ForegroundColor;
        var i = 0;
        foreach (var match in matches)
        {
            switch (match.ToString().Replace("&", "").ToCharArray()[0])
            {
                case '0':
                    Console.ForegroundColor = ConsoleColor.White;
                    break;
                case '1':
                    Console.ForegroundColor = ConsoleColor.Gray;
                    break;
                case '2':
                    Console.ForegroundColor = ConsoleColor.DarkGray;
                    break;
                case '3': 
                    Console.ForegroundColor = ConsoleColor.Black;
                    break;
                case '4':
                    Console.ForegroundColor = ConsoleColor.Red;
                    break;
                case '5':
                    Console.ForegroundColor = ConsoleColor.Green;
                    break;
                case '6':
                    Console.ForegroundColor = ConsoleColor.Blue;
                    break;
                case '7':
                    Console.ForegroundColor = ConsoleColor.Yellow;
                    break;
                default:
                    Console.ForegroundColor = ConsoleColor.White;
                    break;
            }
            Console.Write(split[i]);
            i++;
        }
        Console.WriteLine();
        Console.ForegroundColor = def;
    }

测试：EventManager.ColorizeConsoleMessage("&4Hello, &6world!");

Answer 1

你是对的，Regex.Matches和Regex.Split的结合让事情变得有点尴尬，所以我把它们组合在一起

    public static void ColorizeConsoleMessage(string message)
    {
        MatchCollection matches = Regex.Matches(message, "&+([0-9a-f])([^&]+)");
        ConsoleColor def = Console.ForegroundColor;
        foreach (Match match in matches)
        {
            switch (match.Groups[1].Value[0])
            {
                case '0':
                    Console.ForegroundColor = ConsoleColor.White;
                    break;
                case '1':
                    Console.ForegroundColor = ConsoleColor.Gray;
                    break;
                case '2':
                    Console.ForegroundColor = ConsoleColor.DarkGray;
                    break;
                case '3':
                    Console.ForegroundColor = ConsoleColor.Black;
                    break;
                case '4':
                    Console.ForegroundColor = ConsoleColor.Red;
                    break;
                case '5':
                    Console.ForegroundColor = ConsoleColor.Green;
                    break;
                case '6':
                    Console.ForegroundColor = ConsoleColor.Blue;
                    break;
                case '7':
                    Console.ForegroundColor = ConsoleColor.Yellow;
                    break;
                default:
                    Console.ForegroundColor = ConsoleColor.White;
                    break;
            }
            string str_to_print = match.Groups[2].Value;
            Console.Write(str_to_print);
        }
        Console.WriteLine();
        Console.ForegroundColor = def;
    }

Answer 2

唯一的解决方法是

var i = 1;

Regex.Split在split[]中创建了一个空字符串元素，该元素打乱了所有索引值

    public static void ColorizeConsoleMessage(string message)
    {
        MatchCollection matches = Regex.Matches(message, "&+[0-9a-f]");
        string[] split = Regex.Split(message, "&+[0-9a-f]");
        ConsoleColor def = Console.ForegroundColor;
        int i = 1;
        foreach (Match match in matches)
        {
            switch (match.Value[1])
            {
                case '0':
                    Console.ForegroundColor = ConsoleColor.White;
                    break;
                case '1':
                    Console.ForegroundColor = ConsoleColor.Gray;
                    break;
                case '2':
                    Console.ForegroundColor = ConsoleColor.DarkGray;
                    break;
                case '3':
                    Console.ForegroundColor = ConsoleColor.Black;
                    break;
                case '4':
                    Console.ForegroundColor = ConsoleColor.Red;
                    break;
                case '5':
                    Console.ForegroundColor = ConsoleColor.Green;
                    break;
                case '6':
                    Console.ForegroundColor = ConsoleColor.Blue;
                    break;
                case '7':
                    Console.ForegroundColor = ConsoleColor.Yellow;
                    break;
                default:
                    Console.ForegroundColor = ConsoleColor.White;
                    break;
            }
            Console.Write(split[i]);
            i++;
        }
        Console.WriteLine();
        Console.ForegroundColor = def;
    }