Public Overrides Function Read( _
   ByVal buffer() As Byte, _
   ByVal offset As Integer, _
   ByVal count As Integer _
) As Integer

Dim instance As GZipStream
Dim buffer() As Byte
Dim offset As Integer
Dim count As Integer
Dim value As Integer
 
value = instance.Read(buffer, offset, count)

public override int Read( 
   byte[] buffer,
   int offset,
   int count
)

public:
int Read( 
   array<byte>^ buffer,
   int offset,
   int count
) override 

byte[] working = new byte[WORKING_BUFFER_SIZE];
using (System.IO.Stream input = System.IO.File.OpenRead(_CompressedFile))
{
    using (Stream decompressor= new Ionic.Zlib.GZipStream(input, CompressionMode.Decompress, true))
    {
        using (var output = System.IO.File.Create(_DecompressedFile))
        {
            int n;
            while ((n= decompressor.Read(working, 0, working.Length)) !=0)
            {
                output.Write(working, 0, n);
            }
        }
    }
}