troubleshooting Question

Trying to zip a folder in C# using System.IO.Packaging

Avatar of bickes0724
bickes0724Flag for United States of America asked on
C#Visual Basic.NET
5 Comments1 Solution2573 ViewsLast Modified:
I can get single files to zip into a specified folder just fine, but I want to benchmark a couple different options (using DotNetZip, System.IO.Packaging, and System.IO.Compression.GZipStream). It would make it a lot easier to be able to add a folder.

My program keeps failing at this line:
using (Package zip = System.IO.Packaging.Package.Open(zipFilename, FileMode.OpenOrCreate))

With this Error:
Access to the path '**Folder Path**' is denied.

 Part of my code is below:
string[] filePaths = Directory.GetFiles(fileToAdd, "*", SearchOption.AllDirectories);

            foreach (string file in filePaths)
                // FAILS ON THE NEXT LINE
                // Error: "Access to the path '** Folder Path**' is denied."

                using (Package zip = System.IO.Packaging.Package.Open(zipFilename, FileMode.OpenOrCreate))
                    string destFilename = ".\\" + 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.ReadWrite))
                        using (Stream dest = part.GetStream())
                            CopyStream(fileStream, dest);

        private static void CopyStream(FileStream inputStream, Stream outputStream)
            long bufferSize = inputStream.Length < BUFFER_SIZE ? inputStream.Length : BUFFER_SIZE;
            byte[] buffer = new byte[bufferSize];
            int bytesRead = 0;
            long bytesWritten = 0;
            while ((bytesRead = inputStream.Read(buffer, 0, buffer.Length)) != 0)
                outputStream.Write(buffer, 0, bytesRead);
                bytesWritten += bufferSize;
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