Zipping of files in C#

R Ravula

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

5 Replies

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Hemant Srivastava13y ago
Accepted 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?
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R Ravula13y ago
This is what I am looking for. Thanks again!!
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R Ravula13y ago
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
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Hemant Srivastava13y ago
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.
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Hemant Srivastava13y ago
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());
                        }
                    }
                }
            }
        }
    }
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