Zipping of files in C#

Question

Hi,

I would like to Archieve files for last three months in corresponding subfolders in a directory with no thrird party dlls.And they have to zip to the specific folder in their each subfolder with format name of the folder-yyyy/mm//dd.

Please help me to code for this.

Thanks

Hemant Srivastava · Answer

Let me explain what the above code does: It takes all the files in a directory (for which you passed the path) It iterates one by one file and compress them using GZipStream C#.Net class and saves the zipped files into a corresponding new sub-folder. The name of sub-folder is the Last Access Time of the file. It means, suppose you have three files in a folder C:\MyDocument AA.txt Jan 23, 2012 BB.doc Feb 4, 2013 CC.xls Jan 23, 2012 After running this code, it will create two sub-folders named '2012-01-23' and '2013-04-2013' whereas sub-folder '2012-01-23' will contain compressed files AA.zip, CC.zip sub-folder '2012-01-23' will contain compressed file BB.zip Is it not what you want?

R Ravula · Answer

This is what I am looking for. Thanks again!!

R Ravula · Answer

Hi Hemant, Thank you so much for the help. But, when I passed the directory path to the CompressFiles method, break point is not hitting after foreach(): For Example: The directory path is D:\Rekha\Practice\Directory with Subfolders F1, F2, F3...F29 in it...and all these folders contain text files that has to be archieved. Can you please guide where I went wrong. Thanks, Rekha

Hemant Srivastava · Answer

In the above code, GZipStream is one of the built-in .Net class, so you could easily compress and de-compress any file. Hope it will help.

Hemant Srivastava · Answer

You can't create any Directory name with '/' character, so instead of using '/' chacter I used here '-' symbol to create directory name. Try the following class, here you need to send the directory path in CompressFiles() method: class FileZipper { public void CompressFiles(string directoryPath) { DirectoryInfo directorySelected = new DirectoryInfo(directoryPath); foreach (FileInfo fileToCompress in directorySelected.GetFiles()) { DateTime fileCreationTime = fileToCompress.LastWriteTime; string DirectName = fileCreationTime.Year + "-" + fileCreationTime.Month + "-" + fileCreationTime.Day; DirectName = directorySelected + "\" + DirectName; Directory.CreateDirectory(DirectName); Compress(fileToCompress, DirectName); } } public void Compress(FileInfo fileToCompress, string newDirectoryName) { using (FileStream originalFileStream = fileToCompress.OpenRead()) { if ((File.GetAttributes(fileToCompress.FullName) & FileAttributes.Hidden) != FileAttributes.Hidden & fileToCompress.Extension != ".gz") { using (FileStream compressedFileStream = File.Create(newDirectoryName + "\" + fileToCompress.Name + ".gz")) { using (GZipStream compressionStream = new GZipStream(compressedFileStream, CompressionMode.Compress)) { originalFileStream.CopyTo(compressionStream); Console.WriteLine("Compressed {0} from {1} to {2} bytes.", fileToCompress.Name, fileToCompress.Length.ToString(), compressedFileStream.Length.ToString()); } } } } } }

Zipping of files in C#

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Answers (5)