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

Posted on 2010-09-09
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Last Modified: 2012-05-10
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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Question by:bickes0724
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5 Comments
 
LVL 96

Expert Comment

by:Bob Learned
ID: 33636804
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?
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Author Comment

by:bickes0724
ID: 33636961
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;
            }
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LVL 96

Expert Comment

by:Bob Learned
ID: 33640793
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?
0
 

Author Comment

by:bickes0724
ID: 33646430
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...
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Accepted Solution

by:
bickes0724 earned 0 total points
ID: 33646436

private static void PackageCompress(string destinationFile, string sourceFile)
        {
            if (File.Exists(sourceFile))
            {
                using (Package zip = Package.Open(destinationFile, FileMode.OpenOrCreate))
                {
                    string destFilename = ".\\" + Path.GetFileName(sourceFile);
                    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(sourceFile, FileMode.Open, FileAccess.Read))
                    {
                        using (Stream dest = part.GetStream())
                        {
                            CompressCopyStream(fileStream, dest);
                            dest.Close();
                        }
                        //fileStream.Close();
                    }
                }                
            }
            
        }
        
        public static void PackageDecompress(string destinationFile, string sourceFile)
        {

            using (Package package__1 = Package.Open(sourceFile, FileMode.Open, FileAccess.Read))
            {
                foreach (PackagePart part in package__1.GetParts())
                {
                    Stream input = part.GetStream();
                    FileStream output = new FileStream(destinationFile + part.Uri.ToString(), FileMode.Create, FileAccess.Write);
                    DecompressCopyStream(input, output);

                    input.Close();
                    output.Close();
                }
                
            }
        }

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