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to read General FAQ...
Tehnical Q&A
What are the limitations of the trial version?
The trial version of Polar ZIP Component is completely functional
and expires after 30 days. This means that you get to experience
all the functions present in our release version for 30 days. After
trial period expires, component will throw an exception when you
attempt to call it.
Is Polar ZIP for .NET compatible with ZIP
standard?
Polar ZIP is 100% compatible with PKZIP 2.04g file format. ZIP files
created by Polar ZIP can be used by PKZIP 2.04g and vice-versa.
What compression ratios does Polar Zip for
.NET offer? Is there a set ratio or is it adjustable?
There is no fixed compression ratio in PolarZIP for .NET - the actual
ratio depends on the type of the data being compressed. Due to the
algorithms used, files with a repetitive data structure (i.e. images
with large black areas) result in smaller archive files than those
of a more random nature. If you want to adjust the intensity of
compression, Polar Zip for .NET allows you to choose from ten different
compression level - from simply storing files to using complex methods
resulting in the highest compression ratios.
Why are some anti-spyware programs detecting
Polar ZIP as spyware?
Our product is free from spyware and viruses for sure. We believe
the problem is in anti-spyware software so you should contact the
manufacturer of your anti-spyware program in order to resolve this
issue.
How much time do I need to spend between
installing Polar Zip for .NET and developing successful compression-intensive
applications? I mean, how long will it take me to learn to use it?
And what about compatibility?
Polar Zip for .NET is simple: being a software developer, you know
your time is precious. Now, you can devote it to what you do best
- your own projects. When you need compression, just point the task
to Polar Zip for .NET and consider it done - all actions (compression,
decompression, archive splitting and combining) can be preformed
with a single line of code. And you have archives 100% compatible
with the latest zip file format, which can be used by any ZIP format
supporting software in the world, plus you can use any ZIP archive
you might come across.
Polar Zip for .NET is advertised to be both
simple & advanced at the same time - just how is this accomplished?
If easy of use is what you're after, all the important tasks are
achieved through the static interface quick methods (i.e. Polar.Zip.QuickZip("archive.zip",
"c:\data", "*") ). Polar Zip for .NET's advantages
become evident when you use the object - oriented approach in more
advanced compression operations. Any option you might come across
is probably (if it's been used in the last 15 years by a number
of people, that is) already included, as you can see by yourself
examining the feature list.
How to create multi-part zip files directly to a hard drive*
Here is the example for creating multi archive zip files:
// multi archive on hard disk
// each file is maximum 100 kb
// e.g. if archive.zip is 340 kb then it will be split in
4 files (100 ,100,100 ,40 kb )
// with names arhive001.zip,archive002.zip,
archive003.zip, archive004.zip
ZipArchive pZipArchive = new ZipArchive(@"c:\archive.zip");
pZipArchive.AddFiles(@"c:\temp", new ZipFileFilter("*"),
100 * 1024);
For unzipping multi archive files you need to combine it first.
Here is the example:
ZipArchive pZipArchive = new ZipArchive(@"c:\combined_archive.zip");
pZipArchive.CombineSpannedArchive(@"c:\archive001.zip");
(note: for spanned archive string, argument for CombineSpannedArchive
method you could put any spanned archive file e.g. "c:\archive020.zip")
What is maximum single file size that can
be included in a zip file.
Maximum single file size that can be included in a zip file is limited
to 2GB.
Is Polar Zip for .NET managed code and what
language is the source code developed in?
Yes, Polar ZIP for .NET is 100% managed code. Full source code is
written in managed c++.
I've purchased a copy of Polar ZIP for .NET
and I receive this error:
A first chance exception of type 'Polar.Zip.ZipException' occurred
in
polar.zip.dll Additional information: Trial period for the Polar
Zip for .NET component has expired. To continue using this component
please purchase the release version of the component at http://www.polarsoftware.com.
What is the problem?
You should do the following to solve the problem:
- Uninstall the trial component
- Delete all the Zip dll’s that remained on hard disk
- Run your test program that uses Zip. It should not work now
at all since there is no any Zip dll on the disk. This is a proof
that there is no trial dll on the machine.
- Install the release component
Can Polar Zip for .NET extract or list archives
with the following file extensions . and .arc?
Polar Zip for .NET deals only with zip archives that are compatible
with the PKZIP format.
Is there a way to create a folder in a zip
file? I would like to zip files NOT with the original folder, but
would like to create one and add files to the zip folder.
It is not possible to create a folder in ZIP file conventionally
on your disk. However, you can catch FileStartedCompressing Event
and change every file name that represents font ?(there is a function
to detect this ) and simply append the folder name in front of it.
So the FileName will be "arial.ttf" when event handling
starts and then you change it to "fonts\arial.ttf
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