如何更改单个字符的颜色？

Question

我正在尝试在 C# 中创建 wordle。下面是我的代码，用于将用户输入转换为字符数组，以根据字母的位置更改每个字符的颜色

for (int i = 0; i < userGuessChars2D.GetLength(0); i++)
{
    // Clear and  re-display the board and increase guess number by 1
    Console.Clear();
    displayBoard();
    guessNum++;

    // Store user guess
    userGuesses = Console.ReadLine().ToLower();

    for (int j = 0; j < userGuessChars2D.GetLength(1); j++)
    {
        // Check if user input is included in answer and extra word list
        if (answers.Contains(userGuesses) || extras.Contains(userGuesses))
        {
            userGuessChars2D[i, j] = userGuesses[j];

            // Check the positioning of the letters and change the colour accordingly
            if (userGuessChars2D[i, j] == answerChars2D[i, j])
            {
                Console.BackgroundColor = ConsoleColor.Green;
            }
            else if (userGuessChars2D[i, j] != answerChars2D[i, j])
            {
                Console.BackgroundColor = ConsoleColor.Red;
            }
        }
        else
        {
            Console.WriteLine("Please enter a valid word");
        }
    }
}

无论我做什么，即使我输入了正确的单词，整个面板都返回红色。

有人知道我能做些什么来解决这个问题吗？

Answer 1

从提供的代码来看，看起来你在画板然后设置颜色。设置控制台颜色后需要写入控制台

// Check the positioning of the letters and change the colour accordingly
if (userGuessChars2D[i, j] == answerChars2D[i, j])
{
    Console.BackgroundColor = ConsoleColor.Green;
    
    // Write to the console now
    Console.WriteLine(answerChars2D[i, j]);

    // Optionally reset the console colour for future printing
    Console.ResetColor();
}
else if (userGuessChars2D[i, j] != answerChars2D[i, j])
{
    Console.BackgroundColor = ConsoleColor.Red;
    
    // Write to the console now
    Console.WriteLine(answerChars2D[i, j]);

    // Optionally reset the console colour for future printing
    Console.ResetColor();
}

你可能想进一步重构它以防止重复逻辑

public void Print(string answer, ConsoleColor color)
{
    Console.BackgroundColor = color;
    Console.WriteLine(answer);
    Console.ResetColor();
}

// Use
Print(userGuessChars2d[i, j], ConsoleColor.Green);

Answer 2

您可以使用 ANSI 转义码。

最新版本的 OS Windows 支持它们。 控制台虚拟终端序列.

他们的用法是这样的：

const string RED = "\x1b[31m";
const string GREEN = "\x1b[32m";
const string UNDERLINE = "\x1B[4m";
const string RESET = "\x1B[0m";

Console.WriteLine(GREEN + "Success!" + RESET);
Console.WriteLine(RED + "Error!" + RESET);
Console.WriteLine("Some " + UNDERLINE + "underlined" + RESET + " text");
Console.WriteLine(RED + "Hello " + GREEN + "World!" + RESET);