Question

I’m trying to use SharpZipLib to pull specified files from a zip archive. All of the examples I’ve seen always expect that you want to unzip the entire zip, and do something along the lines of:

       FileStream fileStreamIn = new FileStream (sourcePath, FileMode.Open, FileAccess.Read);          ZipInputStream zipInStream = new ZipInputStream(fileStreamIn);         ZipEntry entry;          while (entry = zipInStream.GetNextEntry() != null)         {             // Unzip file         } 

What I want to do is something like:

ZipEntry entry = zipInStream.SeekToFile('FileName'); 

As my needs involve using a zip as a package and only grabbing files into memory as needed.

Is anyone familiar with SharpZipLib? Does anyone know if I can do this without running through the entire zip by hand?

Answer 1

ZipFile.GetEntry should do the trick:

using (var fs = new FileStream(sourcePath, FileMode.Open, FileAccess.Read)) using (var zf = new ZipFile(fs)) {    var ze = zf.GetEntry(fileName);    if (ze == null) {       throw new ArgumentException(fileName, 'not found in Zip');    }     using (var s = zf.GetInputStream(ze)) {       // do something with ZipInputStream    } }