Unlock zip file after extracting files using ionic.zip and C#

Question

I tried to use the files inside a zip unlocked with ionic.zip in C#

I do that using

 string zipToUnpack = filename;
 ExtractFileToDirectory(filename,appPath);

First time it works fine, but then I try a second time and I get an IO exception saying the file is been used by another user. How can I unlocked this file from the current process?

Answer 1

I cannot seem to find ExtractFileToDirectory in Ionic.Zip's reference documentation . I did find a function with the same name in another StackOverflow question, "Extract a ZIP file programmatically by DotNetZip library?" . If that is the implementation that you are using, you probably need to call Dispose on the ZipFile to close the underlying file streams.

public void ExtractFileToDirectory(string zipFileName, string outputDirectory)
{
     using (ZipFile zip = ZipFile.Read(zipFileName))
     {
         Directory.CreateDirectory(outputDirectory);
         zip.ExtractAll(outputDirectory,ExtractExistingFileAction.OverwriteSilently);
     }
}

If not, share more details about how you are extracting the files.