Compression Decompressor, C#

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//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

using System;
using System.IO;
using System.IO.Compression;
using System.Text;

namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        { 
            var gzip = Convert.FromBase64String("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");
            
            // Create a GZIP stream with decompression mode.
            // ... Then create a buffer and write into while reading from the GZIP stream.
            using (GZipStream stream = new GZipStream(new MemoryStream(gzip), CompressionMode.Decompress))
            {
                const int size = 4096;
                byte[] buffer = new byte[size];
                using (MemoryStream memory = new MemoryStream())
                {
                    int count = 0;
                    do
                    {
                        count = stream.Read(buffer, 0, size);

if (count > 0)
                        {
                            memory.Write(buffer, 0, count);
                        }
                    }
                    while (count > 0);

var rawDecompressed = memory.ToArray();
                    var rawDecompressedString = Encoding.Default.GetString(rawDecompressed, 0, rawDecompressed.Length);

Console.WriteLine(rawDecompressedString);
                }
            }
        }
    }
}

Show compiler warnings [ + ] Show input
Compilation time: 0,16 sec, absolute running time: 0,11 sec, cpu time: 0,09 sec, average memory usage: 15 Mb, average nr of threads: 3