Decompress large file
 

Hi Folks,

I'm using this code I found online to decompress a large file. It works fine when I try it with a small file i.e. a 5MB mp3 (1.7MB compressed) but when I try and use it with a 250MB file (27MB compressed), the newly created output file is the same size as the input compressed file (AFAIK, it is probably a copy). I have tried this on a machine with 256MB of RAM and a machine with 4GB of RAM...

protected void Decompress(string filePath,string fileout)

        {

            FileStream sourceFile = File.OpenRead(filePath);

            FileStream destinationFile = File.Create(fileout);

            GZipStream unzip = null;

            byte[] buffer = new byte[sourceFile.Length];

            try

            {

                unzip = new GZipStream(sourceFile, CompressionMode.Decompress, false);

                int numberOfBytes = unzip.Read(buffer, 0, buffer.Length);



                destinationFile.Write(buffer, 0, numberOfBytes);

            }

            catch (Exception ex)

            {

                MessageBox.Show(ex.Message);

            }

            finally

            {

                sourceFile.Close();

                destinationFile.Close();

                unzip.Close();

            }

        }

Your help is appreciated.

Thanks

Re: Decompress large file
 

Have you tried using the SharpZip? It's probably much better at handling compression. http://www.icsharpcode.net/OpenSource/SharpZipLib/