Append in ZipLibrary

[Adrian]

Hi there,

I've got a small application and now stuck in the task "Appending Files in Zip".

As far as it looks the ZipPackage only allow to Read or Write. Not both.

The Codeblock with the routine

ZipPackage zipPackage;

if (File.Exists(appPath + @"\" + currentMonthZip))
{
    Stream stream = File.OpenRead(appPath + @"\" + currentMonthZip);
    zipPackage = ZipPackage.Open(stream, FileAccess.ReadWrite);
}
else
{
    Stream stream = File.Create(appPath + @"\" + currentMonthZip);
    zipPackage = ZipPackage.Create(stream);
}

foreach (string folderName in logFoldernames)
{
    string[] listLogs = Directory.GetFiles(appPath + @"\" + folderName);
    foreach (string listLogName in listLogs)
    {
        zipPackage.Add(listLogName, folderName + @"\" + Path.GetFileName(listLogName));
    }

    Directory.Delete(appPath + @"\" + folderName);
}

I'm aware that maybe the problem lays here but change the FileAccess or FileMOde ends in exceptions (Stream not for Read/Write)

Stream stream = File.OpenRead(appPath + @"\" + currentMonthZip);
zipPackage = ZipPackage.Open(stream, FileAccess.ReadWrite);

So what's the suggested approach to open an existing Zip and just attach some new Files in it?

Do I really have to create a temporary zip with old and new content and afterwards delete the old zip and rename the new to the proper name? 

Thanks for any help.

[Petar Mladenov]

Hello Adrian,

Unfortunately, we haven't implemented this functionality "out of the box" yet and the "temporary zip" approach is the only one possible currently. We created a feature request in our PITS where you can vote for it, this way increasing its development priority. Thank you for your cooperation.

All the best,
Petar Mladenov
the Telerik team

[Adrian]

Hello Petar, 

Thank you for your answer. I will do as you suggest and use the "temporary" approach.

Keep up the good work and I'm looking forward what kind of improvement will come with this still new Zip Library.

Best Regards

Adrian