Reading unicode from console

Question

I am trying to read unicode string from a console in C#, for the sake of example, lets uset his one:

c:\\SVN\\D³ebugger\\src\\виталик\\Program.cs

Answer 1

Here's one fully working version in .NET 3.5 Client:

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

  [DllImport("kernel32.dll")]
  static extern bool ReadConsoleW(IntPtr hConsoleInput, [Out] byte[]
     lpBuffer, uint nNumberOfCharsToRead, out uint lpNumberOfCharsRead,
     IntPtr lpReserved);

  public static IntPtr GetWin32InputHandle()
  {
    const int STD_INPUT_HANDLE = -10;
    IntPtr inHandle = GetStdHandle(STD_INPUT_HANDLE);
    return inHandle;
  }

  public static string ReadLine()
  {
    const int bufferSize = 1024;
    var buffer = new byte[bufferSize];

    uint charsRead = 0;

    ReadConsoleW(GetWin32InputHandle(), buffer, bufferSize, out charsRead, (IntPtr)0);
    // -2 to remove ending \n\r
    int nc = ((int)charsRead - 2) * 2;
    var b = new byte[nc];
    for (var i = 0; i < nc; i++)
      b[i] = buffer[i];

    var utf8enc = Encoding.UTF8;
    var unicodeenc = Encoding.Unicode;
    return utf8enc.GetString(Encoding.Convert(unicodeenc, utf8enc, b));
  }

  static void Main(string[] args)
  {
    Console.OutputEncoding = Encoding.UTF8;
    Console.Write("Input: ");
    var st = ReadLine();
    Console.WriteLine("Output: {0}", st);
  }
}

Answer 2

This seems to work fine when targetting .NET 4 client profile, but unfortunately not when targetting .NET 3.5 client profile. Ensure you change the console font to Lucida Console.
As pointed out by @jcl, even though I have targetted .NET4, this is only because I have .NET 4.5 installed.

class Program
{
    private static void Main(string[] args)
    {
        Console.InputEncoding = Encoding.Unicode;
        Console.OutputEncoding = Encoding.Unicode;

        while (true)
        {
            string s = Console.ReadLine();

            if (!string.IsNullOrEmpty(s))
            {
                Debug.WriteLine(s);

                Console.WriteLine(s);
            }
        }
    }
}