CODEWITHSUNDEEP
c#asp.net-mvcmodel-view-controller
Bimal Das
Bimal Das

Reputation: 1992

Create Zip File in Memory from different file paths and Download it in C#

I was trying to create and download a zip file from the different location using ZipArchive class.

The files are located in the different file path. I want to create a zip file in c# in-memory object and then download it without saving the zip file in c# / MVC.

I have tried like this:

public void DownloadZipFromMultipleFile()
{
   using (var memoryStream = new MemoryStream())
   {
      using (var archive = new ZipArchive(memoryStream, ZipArchiveMode.Create, true))
      {
         archive.CreateEntryFromFile(Server.MapPath("~/Content/appStyle.css"), "myStyle.css");
         archive.CreateEntryFromFile(Server.MapPath("~/NewPath/myScript.js"), "script.js");
      }
   }

   //archive.Save(Response.OutputStream);
}

I have successfully added files to archive but not able to download the file as a zip file.

Upvotes: 1

Views: 1406

Answers (1)

Bimal Das
Bimal Das

Reputation: 1992

As suggested by PapitoSh at comment section, I added few lines along with my existing codes and now it is working fine.

public void DownloadZipFromMultipleFile()
{
   using (var memoryStream = new MemoryStream())
   {
      using (var archive = new ZipArchive(memoryStream, ZipArchiveMode.Create, true))
      {
         archive.CreateEntryFromFile(Server.MapPath("~/Content/appStyle.css"), "myStyle.css");
         archive.CreateEntryFromFile(Server.MapPath("~/NewPath/myScript.js"), "script.js");
      }

      byte[] bytesInStream = memoryStream.ToArray(); // simpler way of converting to array 
      memoryStream.Close(); 
      Response.Clear(); 
      Response.ContentType = "application/force-download"; 
      Response.AddHeader("content-disposition", "attachment; filename=name_you_file.zip"); 
      Response.BinaryWrite(bytesInStream); Response.End();
   }

   //archive.Save(Response.OutputStream);
}

Upvotes: 1

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