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

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))
                    {
                        zip.DeletePart(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);
                            dest.Close();
                        }
                        fileStream.Close();
                    }
                }
            } 


        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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Bob Learned

I don't understand your zip process. You have a loop for each file, and you open and close the .zip file. Also, what file path are you using with 'zipFileName', and should you have access within the security context for the running application?

bickes0724

ASKER

Here is more code and the paths you asked for. I am not sure why I am closing the connections in the previous code. Honestly, I haven't been able to debug that far yet because of the error. Below is code that actually works as expected.

private void Button_Click(object sender, RoutedEventArgs e)
{
// AddFileToZip(@"C:\Users\bickes\Desktop\NewZipFolder.zip", @"C:\Users\bickes\Desktop\TestZip", true);
AddFileToZip(@"C:\Users\bickes\Desktop\NewZipFolder.zip", @"C:\Users\bickes\Desktop\FM.Portal.SetFacilities\FM.Portal.SetFacilities.sln", false);
AddFileToZip(@"C:\Users\bickes\Desktop\NewZipFolder.zip", @"C:\Users\bickes\Desktop\FM.Portal.SetFacilities\FM.Portal.SetFacilities.csproj", false);
}

private const long BUFFER_SIZE = 4096;

private static void AddFileToZip(string zipFilename, string fileToAdd, bool IsFolder)
{
if (IsFolder == false)
{
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))
{
zip.DeletePart(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);
dest.Close();
}
fileStream.Close();
}
}
return;
}

Bob Learned

1) What kind of application is this? Windows Forms? Windows Service?

2) Where does it run from?

3) What is the operating system (it looks like Vista or Windows 7)?

4) For Vista or Windows 7, do you have UAC turned on?

bickes0724

ASKER

I went a different route. Thank you for all your help. I wasn't very clear when I was explaining myself yesterday. I have posted my working code below to help anyone else...

ASKER CERTIFIED SOLUTION

bickes0724

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