I have a CAB file (actually a WSP, but I think they are the same) that contains several files. One of the files is an XML that I would like to modify and re-insert into the CAB.
Is there anything that is built into .NET that will allow me to do this? If not, are there any third party libraries out there that will help me to do this?
Here's one cab compressions and extraction library:
http://www.codeproject.com/KB/files/CABCompressExtract.aspx
Related
I want to create a .ods file throught C#.net and also want to export tables,images into it.
Is there any solution for that?
All OpenDocument's is just a couple of XML-files, that are packed into zip-archive and named with different file extensions. It's hard, but possible to write this documents with just only standard XMLWriter/ZipFile classes. Format specifications are open to anyone.
But there are many packages that simplifies and abstracts this process. Take look on Aspose.Words for .NET and AODL NuGet package's at least.
Im looking for methods to combine files including their name and relative path into one single file. A folder disguised as a file. I don't need any compression or encryption. Just the file data including some binary metadata attached to each file.
It would be great if this file was possible to open/inspect/unpack with a standard file browser in Windows such as with regular zip-files.
Yes I could use zip. But I'm researching alternatives and I would prefer a simple method I could implement myself in C#/.NET.
UPDATE
I've researched this some more and came across Microsoft's Structured Storage format. It looked promising at first but it seemes to be an obsolete format, replaced with the Open Package Format. And then I found out about the TAR-format. It seemes to be the most basic format. But I'm not sure yet if I can add any custom metadata to the entries with TAR.
UPDATE
I went with DotNetZip at the end anyway...
Why not use zip? You can use a third party library, like dotnetzip, to make the code easy to write. And, as you mentioned, Windows handles zip files well.
If you have specific reason to search an alternative to ZIP, take a look on virtual file systems, eg. CodeBase File System or our Solid File System. Solid File System lets you add alternate data streams (like in NTFS) or tags (small chunks of binary or text data) to each file or directory. And with OS edition of SolFS you can make the filesystem visible to Windows (including Explorer and third-party applications).
I must admit that while virtual file systems are easy to use (easier than ZIP), they are commercial products (I didn't see free virtual file system implementations yet).
Well, I didn't find any libs to create Excel file in Windows Phone 7 and the default libs for Excel are not working because they weren't compile for it.
Does any of you guys know how to do this?
Excel is able to open many different kinds of files beyond the .xls or .xlsx. Most common is CSV; it's dead simple but not very capable, and I would avoid it for all but the simplest applications.
A format I've used successfully is the Symbolic Link (SYLK) format. The .slk files open directly in Excel, and you can include cell formatting and formulas. It's easy to save out a file from Excel itself and use it as a template for creating your own files.
You're going to struggle to find a library to do this simply because WP (as of 7.1) doesn't include the System.IO.Packaging namespace, which most libraries will depend on to read/write docx/xlsx/etc files.
What is the best way to convert a whole folder (including it's contents) into a .zip file?
There is no class for doing this in the .NET Framework itself, but you can use some of the third-party libraries. An open-source DotNetZip seems to be quite good and has a lot of examples to get you started. You'll just need to recursively iterate over all files in the given folder and add them one by one.
This appears to have your answer.
I've used the Xceed Zip libraries in the past for this and found them very easy to use. The full license is quite pricey, but they do have a 45 day, 100% functional free trial available here:
http://xceed.com/Zip_Net_Intro.html
I am searching for a way to add several files into one file, much like a Zip file. I need to be able to create a file container on the fly and add several word documents, images and other important files into the container. My criteria is that you don't need to install any additional software on the computer (preferebly only a .DLL file that i can include in my project), that the program is free and that you can encrypt the data.
Anyone know of any good container programs that has support for these 2 criterias or if anyone know any good information about how to create your own container.
Patrick
Does it have to be like a zip file, or can it be a zip file?
Are you using .NET Framework 3.0 or 3.5? If so, look at
System.IO.Packaging.ZipPackage
This discussion has a section about it.
In addition to DotNetZip (licensed with Microsoft Public License) that Jay Riggs mentions, there's SharpZipLib (licensed with GPL). Whichever you choose, be sure the terms of the license match your understanding of the word "free".
If you can use ZipPackage, one benefit is that you don't need to think about license terms (beyond those of developing any other .NET app).
EDIT: DotNetZip and SharpZipLib support encryption. I don't see that ZipPackage does, but you could look at System.IO.Packaging.EncryptedPackageEnvelope.
I used DotNetZip in a project and it worked really well. I would recommend using it. It supports encryption and is easy to use.
http://www.codeplex.com/DotNetZip
User .Net GZipStream class(System.IO.Compression namespace.) to compress and decompress files. You can find more information on
MSDN Link
GZIP Compression
I have personally used this technique to decomress .zip file. Click Here