Create a Zip File Using Asp.Net & C#


In this article I will explain how to create a zip file using ASP.Net & C#. In this purpose we can use Ionic.Zip.dll reference for creating Zip file in ASP.Net.So first we download the dll through this link Ionic.Zip.dll.

Assemblies Required

After downloading the  Ionic.Zip.dll Zip file you can get many folders inside the zip file. Go to zip-v1.9-Reduced folder Inside the zip file. then open the particular folder that contain Ionic.Zip.Reduced.dll.

We must add the following namespace:

using Ionic.Zip;


The following code will create zip file in ASP.Net with the help of  Ionic.Zip.Reduced.dll.

protected void btn_zip_Click(object sender, EventArgs e)
        string path = Server.MapPath("~/Test/");//Location for inside Test Folder
        string[] Filenames = Directory.GetFiles(path);
        using (ZipFile zip = new ZipFile())
            zip.AddFiles(Filenames, "Project");//Zip file inside filename
            zip.Save(@"C:\Users\user\Desktop\");//location and name for creating zip file
  • Code line number 03 describe the location of the file.Those files we can convert into zip format.
  • Code line number 07 describe that the particular name of the file inside the zip file.
  • Code line number 08 define the name of the zip file we are going to create.

Dll Reference

Add the Downloaded dll inside the Bin Folder.


Figure 1 : Ionic.Zip.Reduced.dll



Figure 2


Created the Zip file.


Figure 3

Inside The Zip File.


Figure 4


We learned how to create a Zip file using ASP.NET and C#. I hope this article is useful for all .NET beginners.


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