unicode c#

[roba "chama"]

machala mekata poddak udawa karannako mata oni sinhala unicode walin liyapu txt file ekak c# wali read karaganna utf8 walat encodin kalath wada nane ? ? ? pennanne danna ekkenek kiyanna me thiyenne code eka


using System;
using System.Collections.Generic;
using System.Text;
using System.Diagnostics;

namespace RandomCharacterGen
{
class Program
{
static void Main(string[] args)
{
Console.OutputEncoding = System.Text.Encoding.UTF8;
String text = System.IO.File.ReadAllText("C:\\Users\\xxx\\Desktop\\Resarch\\sinhalac.txt");
System.Console.WriteLine("Contents of sinhalac.txt={0}", text);
Console.ReadLine();
}
}

}