让控制台支持 ANSI 转义序列，输出下划线、修改颜色或其他控制

const int STD_OUTPUT_HANDLE = -11;
const uint ENABLE_VIRTUAL_TERMINAL_PROCESSING = 0x0004;

[DllImport("kernel32.dll", SetLastError = true)]
static extern IntPtr GetStdHandle(int nStdHandle);

[DllImport("kernel32.dll")]
static extern bool GetConsoleMode(IntPtr hConsoleHandle, out uint lpMode);

[DllImport("kernel32.dll")]
static extern bool SetConsoleMode(IntPtr hConsoleHandle, uint dwMode);

static void Main(string[] args)
{
    Console.Title = "Walterlv.Demo";

    var handle = GetStdHandle(STD_OUTPUT_HANDLE);
    GetConsoleMode(handle, out var mode);
    mode |= ENABLE_VIRTUAL_TERMINAL_PROCESSING;
    SetConsoleMode(handle, mode);

    // 我们准备在这里添加新的代码。
    
    Console.Read();
}

const string UNDERLINE = "\x1B[4m";
const string RESET = "\x1B[0m";
Console.WriteLine($"Some {UNDERLINE}underlined{RESET} text");

const string RED = "\x1B[31m";
Console.WriteLine($"Some {UNDERLINE}underlined{RESET} and {RED}red{RESET} text");