Home > Windows Azure > Compress and extract file using Gzipstream

Compress and extract file using Gzipstream

I have faced situation for downloading large blob files from azure server to local folder. It was easy to download the file from azure server. But if file has more than 2 GB (means larger size) it will got error in the middle of the downloading. When I was facing the issue, I was search on google and not found feasible solution soon that’s why I posted this compress and decompress codes here..

using System.IO.Compression;


Compress files ….

public static void Compress(FileInfo fi)


            // Get the stream of the source file.

            using (FileStream inFile = fi.OpenRead())


                // Prevent compressing hidden and

                // already compressed files.

                if ((File.GetAttributes(fi.FullName)

                    & FileAttributes.Hidden)

                    != FileAttributes.Hidden & fi.Extension != “.gz”)



                    //string[] filesplits = fi.FullName.Split(‘.’);

                    // Create the compressed file.

                    using (FileStream outFile =

                                File.Create(fi.FullName + “.gz”))


                        using (GZipStream Compress =

                            new GZipStream(outFile,



                            // Copy the source file into

                            // the compression stream.


                            Console.WriteLine(“Compressed {0} from {1} to {2} bytes.”,

                                fi.Name, fi.Length.ToString(), outFile.Length.ToString());








Decompress compressed file..

public void Decompress(FileInfo fi)


            // Get the stream of the source file.

            using (FileStream inFile = fi.OpenRead())


                // Get original file extension, for example

                // “doc” from report.doc.gz.

                string origName = curFile.Remove(curFile.Length –


                //Create the decompressed file.

                using (FileStream outFile = File.Create(origName))


                    using (GZipStream Decompress = new GZipStream(inFile,



                        // Copy the decompression stream

                        // into the output file.


                        Console.WriteLine(“Decompressed: {0}”, fi.Name);





Categories: Windows Azure Tags: ,
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