using System;

using System.IO;

public class Program

{

    public static void Main()

    {

        var testBytes = new byte[]{(byte)'H', (byte)'o', (byte)'i', 0, 0, 0, 0};

        using(var reader = new StreamReader(new MemoryStream(testBytes)))

        {

            Console.WriteLine(reader.ReadToEnd());

            reader.BaseStream.Seek(0, SeekOrigin.Begin);

            Console.WriteLine(reader.ReadToEnd());

            reader.BaseStream.Seek(0, SeekOrigin.Begin);

            Console.WriteLine(reader.ReadToEnd());

        }

    }

}