Creating a folder inside the ZIP file with System.IO.Packaging

Jon Galloway posted a great article how to zip files using .NET without any external library, after that many people were asking how to create a directory inside that zip file to organized the ZIP

I added the code into the comments yet for easy copy and paste, please find the code below, now is a parameter for the method.


private static void AddFileToZip(string zipFilename, string fileToAdd, string sDirectory)
            using (Package zip = System.IO.Packaging.Package.Open(zipFilename, FileMode.OpenOrCreate))
                string destFilename = ".\\" + sDirectory + "\\" + Path.GetFileName(fileToAdd);
                Uri uri = PackUriHelper.CreatePartUri(new Uri(destFilename, UriKind.Relative));
                if (zip.PartExists(uri))
                PackagePart part = zip.CreatePart(uri, "", CompressionOption.Normal);

                using (FileStream fileStream = new FileStream(fileToAdd, FileMode.Open, FileAccess.Read))
                    using (Stream dest = part.GetStream())
                        CopyStream(fileStream, dest);




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