[C#] Write Unicode character in windows console.

C#_console_unicode

using System.Runtime.InteropServices;
using System.IO;

namespace foo
{
  class bar
  {
    [DllImport("kernel32.dll", SetLastError = true)]
    public static extern bool SetConsoleOutputCP(int newcp);
    static void Main(string[] args)
      {
        bool ok = SetConsoleOutputCP(65001);
        Stream uniconstream = Console.OpenStandardOutput();
        StreamWriter uniconstrwr = new StreamWriter(uniconstream, Encoding.UTF8, 500);
        uniconstrwr.AutoFlush = true;
        Console.SetOut(uniconstrwr);
        Console.Write("\b \b");  // clear UTF preamble
        
        Console.WriteLine( "test '\u20ac' '\u263a' '\u266b' '\u2126' end." );
        Console.WriteLine("♠♤♥♡♦♢♣♧");
      }
  }
}