The .NET Framework 4.5 Gets ZIP: Listing 1

Creating a compressed file with System.IO.Packaging.ZIPPackage.

'Get list of files in directory tree from FolderPath (Does not capture an empty folder)
  Dim files() = IO.Directory.GetFiles(FolderPath, "*.*", SearchOption.AllDirectories)
  If FolderPath.EndsWith("\") Then FolderPath = FolderPath.Substring(0, FolderPath.Length - 1)
  Using Zip As Package = ZipPackage.Open(ZipFullFilename, FileMode.OpenOrCreate, FileAccess.ReadWrite)
    For Each item In files
      Dim relFile = item.Substring(FolderPath.Length)
      relFile = relFile.Replace(" "c, "_"c).Replace("\", "/")
      If relFile.StartsWith("/") = False Then relFile = "/" & relFile
      Dim filePart As PackagePart = Zip.CreatePart(New Uri(relFile), _
                Net.Mime.MediaTypeNames.Application.ZIP, Optimization)
      'Read the file into a byte array that can be written to Zip stream
      Dim arrBuffer As Byte() = File.ReadAllBytes(item)
      filePart.GetStream().Write(arrBuffer, 0, arrBuffer.Length)
    Next
  End Using

About the Author

Joe Kunk is a Microsoft MVP in Visual Basic, three-time president of the Greater Lansing User Group for .NET, and developer for Dart Container Corporation of Mason, Michigan. He's been developing software for over 30 years and has worked in the education, government, financial and manufacturing industries. Kunk's co-authored the book "Professional DevExpress ASP.NET Controls" (Wrox Programmer to Programmer, 2009). He can be reached via email at [email protected].

comments powered by Disqus

Featured

  • Microsoft's Lander on Blazor Desktop: 'I Don't See a Grand Unified App Model in the Future'

    For all of the talk of unifying the disparate ecosystem of Microsoft-centric developer tooling -- using one framework for apps of all types on all platforms -- Blazor Desktop is not the answer. There isn't one.

  • Firm Automates Legacy Web Forms-to-ASP.NET Core Conversions

    Migration technology uses the Angular web framework and Progress Kendo UI user interface elements to convert ASP.NET Web Forms client code to HTML and CSS, with application business logic converted automatically to ASP.NET Core.

  • New TypeScript 4.2 Tweaks Include Project Explainer

    Microsoft shipped TypeScript 4.2 -- the regular quarterly update to the open source programming language that improves JavaScript with static types -- with a host of tweaks including a way to explain why files are included in a project.

  • What's Top-Paying .NET Skill, In-Demand Language?

    New tech reports reveal the top-paying .NET skills and most in-demand programming languages in the Microsoft-centric developer landscape.

Upcoming Events