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How to Create Zip in ASP.Net Using C#

This article explains how to create a zip file in ASP.NET using C#. First we download Ionic.Zip.dll from the following link or attachment.

Ionic.Zip.dll

The following is the procedure.

Step 1

Open Visual Studio 2012 and click "File" -> "New" -> "Web site...". A window is opened. In this window, click "Empty Web Site Application" under Visual C#.

application-name.jpg

Give your application the name "Create_Zip" and then click "Ok".

Step 2

Now we will need add a DLL to our website, check the following steps.
 
Go to Solution Explorer then right-click on the "References" node of the solution then go to "Add Reference" then go to the Browse tab then select the DLL.
 
Now a bin folder is added to our Web Site and place Ionic.Zip.dll in this folder and add another folder to your application.

Right-click on your Web Site then select "New folder" and give it the name "Zipa". Our Web Site will be like this:

 solution-explorer.jpg

Complete Program

CreateZip.aspx

  1. <%@ Page Language="C#" AutoEventWireup="true" CodeFile="CreateZip.aspx.cs" Inherits="CreateZip" %>  
  2. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">  
  3. <html xmlns="http://www.w3.org/1999/xhtml">  
  4. <head runat="server">  
  5.     <title></title>  
  6. </head>  
  7. <body>  
  8.     <form id="form1" runat="server">  
  9.       <h3 style="color: #0000FF; font-style: italic"> Create Zip in ASP.NET</h3>  
  10.     <div style="height: 121px">  
  11.         <asp:FileUpload ID="FileUpload" runat="server" />  
  12.         <br />  
  13.         <br />  
  14.         <asp:Button ID="bttnupload" runat="server" Text="Upload File" Font-Bold="True" onclick="bttnupload_Click" /     
  15.         <asp:Button ID="bttnzip" runat="server" Text="Create Zip" Font-Bold="True" onclick="bttnzip_Click" />        
  16.         <br />  
  17.         <br />  
  18.         <asp:Label ID="lbltxt" runat="server" ForeColor="#CC0000"></asp:Label>  
  19.     </div>  
  20.     </form>  
  21.     </body>  
  22. </html> 

CreateZip.aspx.cs

  1. using System;  
  2. using System.Collections.Generic;  
  3. using System.Linq;  
  4. using System.Web;  
  5. using System.Web.UI;  
  6. using System.Web.UI.WebControls;  
  7. using Ionic.Zip;  
  8. using System.IO;  
  9. public partial class CreateZip : System.Web.UI.Page  
  10. {  
  11.     protected void Page_Load(object sender, EventArgs e)  
  12.     {  
  13.     }  
  14.     protected void bttnupload_Click(object sender, EventArgs e)  
  15.     {  
  16.         if (FileUpload.HasFile)  
  17.         {  
  18.             string filename = Path.GetFileName(FileUpload.PostedFile.FileName);  
  19.             string pathname = Server.MapPath("~/zipa/" + filename);  
  20.             FileUpload.SaveAs(pathname);  
  21.             lbltxt.Text = "File Upload Successfully";  
  22.         }  
  23.     }  
  24.     protected void bttnzip_Click(object sender, EventArgs e)  
  25.     {  
  26.         try  
  27.         {  
  28.             string pathname = Server.MapPath("~/zipa/");  
  29.             string[] filename = Directory.GetFiles(pathname);  
  30.             using (ZipFile zip = new ZipFile())  
  31.             {  
  32.                 zip.AddFiles(filename, "file");  
  33.                 zip.Save(Server.MapPath("~/zipa.zip"));  
  34.                 lbltxt.Text = "Zip File Created";  
  35.             }  
  36.         }  
  37.         catch (Exception ex)  
  38.         {  
  39.             lbltxt.Text = ex.Message;  
  40.         }  
  41.     }  
  42. } 

Output 1

 first-image.jpg

Click on "Choose File" and select any file from any drive.

 select-file.jpg

Output 2

Click on the "Upload" Button.

 click-upload-button.jpg

Output 3

Now click on the "Create Zip" button.

 click-on-createzip-button.jpg

Output 4

Now see that the Solution Explorer contains a Zip folder.

final-result.jpg

For more information, download the attached sample application.


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