Create and download zip file in c#

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In my c# app I am trying to create a zip file from the attachments I got from the user and then download the zip file. First I tried using SharpZipLib but it did not work.

I was getting the following error:

Thread abort error.

Now I am trying to use

System.IO.Compression;

but something is wrong there, as I am getting this error:

The type or namespace name 'ZipFile' could not be found (are you missing a using directive or an assembly reference?)

I have added the dll reference now when I try to do

            using (ZipFile zip = new ZipFile())
            {
                zip.CompressionLevel = CompressionLevel.Fastest;

                zip.AddSelectedFiles(logoimage, "", false);
                zip.Save(HttpContext.Current.Response.OutputStream);
            }

I get this error,

Cannot declare a variable of static type 'System.IO.Compression.ZipFile'    

Any thoughts?

As the error says System.IO.Compression.ZipFile is a static class so you cannot create a new instance of one.

The ZipFile class only exposes static methods to compress a directory, to compress a particular file you want System.IO.Compression.ZipArchive.

Create and download zip file in c#, zip file, and then extracts the zip to a new folder. To run the sample, create a start folder in your program folder and populate it with files to zip. C# Zip and UnZip your Files with Ease. Download WinZip Now.

With System.Io.Compression you can use GZipStream class to compress and decompress streams.

As stated here to use the ZipFile class, you must add a reference to the System.IO.Compression.FileSystem assembly in your project; otherwise, you'll get the following error message when trying to compile : The name 'ZipFile' does not exist in the current context.

How to: Compress and extract files, C# Create Zip File. Windows 7 – My Computer – Send To – Compressed Folder (.zip file) Add Reference Dialog – System.IO.Compression.FileSystem Assembly. Zip File in our output folder. Zip File output – CompressionLevel. Contents of Zip File Extracted to specified folder. Adding a Reference to the System.IO.Compression Have you ever encountered a scenario when you have to download few files zipped and compressed! Few development involving the manipulation of documents and its management would require this. There are a lot of packages out in the market. Here in this article, I would be sharing the use of DotNetZip package used to zip, unzip & compress files using C#, VB.Net & any .NET language.

Take a look at How to: Compress and Extract Files on MSDN.

Make sure you have .NET 4.5 or later. I'm assuming you do since you are trying to use System.IO.Compression.

ZipFile Class (System.IO.Compression), 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,  The following example shows how to create and extract a compressed .zip file by using the ZipFile class. The example compresses the contents of a folder into a new .zip file, and then extracts the zip to a new folder. To run the sample, create a start folder in your program folder and populate it with files to zip.

C# Create Zip File « John Nelson's Blog, You are not adding the File path to the ListItem and trying to get the path from Value property, try adding the path to the checkbox list Item's  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.

How to Create a Zip File in Asp.Net using DotNetZip – C# and Vb.Net, This article, by Scott Mitchell, examines how to create ZIP files on the fly for these two scenarios (in both C# and VB) is available for download  Creating a Zip File You can create Zip files in two ways - you can select one or more files and then create a Zip archive from those files or you can select a folder so as to Zip all the files it containes. The following code shows the click event handler of File, Folder and Create buttons that do this job for you.

How to download multiple files and create zip file from those files in , In my website I have created a Folder named Files which contains the to the Zip object. Finally the Zip object is downloaded as Zip file. C#. In my c# app I am trying to create a zip file from the attachments I got from the user and then download the zip file. First I tried using SharpZipLib but it did not work. I was getting the follo

Comments
  • Have you added the Dll as a reference?
  • No I haven't, how do I do that?
  • In your Solution Explorer, right click your project and click Add Reference, browse to the DLL file you need to import.
  • check this link to add the dll as reference msdn.microsoft.com/en-us/library/wkze6zky.aspx
  • Just pick any example about ZipFile, it's a static helper class around ZipArchive...
  • I am looking at the example you gave, the issue with ZipArchive is that it is expecting an already zipped folder, which in my case is not true.