1. Zip Folder In Asp.net

The DotNetZip class library (an open source library) provides useful methods to Zip files quickly using code behind procedures in Asp.Net. It’s safe and it’s been around for many years now. It supports.Net languages such as C# and Vb. Install DotNetZipTo start with, you first need to install a file called Ionic.zip.dll on your computer. The library will provide the methods for zipping files.

If you are using.Net 4 or later, then I am sure you must have access to NuGet Packages. The NuGet packages tool is a safe and efficient way to download and install third party libraries. I always recommend using it.To install the library using NuGet, first create a new website and open Solution Explorer. Right click solution and click Manage NuGet Packages option. See the image.In the search box, type DotNetZip and it would automatically find it for you.

Click the Install button. Once you have installed, you can find the library file Ionic.zip.dll (with other files) in the Bin folder of your project.However, if you do not have access to NuGet (or for some reason, it couldn’t find or install) then you can straight away download the library from DotNetZip site. Save the libraries in the Bin folder.Let’s now ZIP it.Why would you ZIP a folder with files, depends on your requirement. However, for this example, I simply need a button control on my web page and a label control to show a message on completion. Out of many the methods the library provides, I am particularly using three methods in the above example, under the ZipFile class.The first is the AddEntry method.

Zip Folder In Asp.net

This method allows us to add a string value in a file. The name of the file I have mentioned is Content.txt. The file with the string (“This Zip has 2 DOC files”) is zipped along with other files in the folder. This is optional. It is useful when you want to mention the contents of the Zip file separately in another file.Also Read:The second method AddFiles will add all the files in a specified folder and create the ZIP file.

It will take two parameters. The first parameter is the path of the folder that we will zip. The second parameter is the name of the zip file. To get the path, I have added the “System.IO” namespace in the beginning.Finally, the third method Save will save the zipped file in the root of project. You can save it anywhere else you want.

Option Explicit OnImports Ionic.ZipImports System.IOPartial Class SiteInherits System.Web.UI.MasterPageProtected Sub nowpackit(ByVal sender As Object, ByVal e As EventArgs)' ZIP ALL FILES IN THE FOLDER.Using zip As New ZipFile' CREATE A FILE USING A STRING. THE FILE WILL BE STORED INSIDE THE ZIP FILE.zip. AddEntry('Content.txt', 'This Zip has 2 DOC files')' ZIP THE FOLDER WITH THE FILES IN IT.zip.

AddFiles(Directory.GetFiles(Server.MapPath('/doc-files/')), 'packed')zip. Save(Server.MapPath('/encoded.zip')) ' SAVE THE ZIP FILE.lblMsg.InnerHtml = 'Folder Zipped.' End UsingEnd SubEnd Class.