ASP.NET Zip File - Download and Then Remove Temp zipFile

Question

Hi ,

i got a download page , there 3 download option , Word , Zip , PDF .. and there is a folder in there so many .DOC file. I want when a user click ZIP option in page , ASP.NET zip this folder with doc files than it will be temp zip file , and then client will save it from server.When user's download is finished then tempZip file will delete itself... this is our scenario ?

How can i do this scenario with ASP.NET 2.0 C# .. ??

Note : I know how can i zip and unzip files and remove files from system with C# asp.net 2.0 .

Answer 1

You'll want to stream the zip file to the user manually, then delete the file when streaming is complete.

try
{
    Response.WriteFile( "path to .zip" );
}
finally
{
    File.Delete( "path to .zip" );
}

Answer 2

i fixed my problem with adding to end of the stream code,

Response.Flush();
Response.Close();
if(File.Exist(tempFile))
{File.Delete(tempFile)};

Thats solves my problem.. thanx all.

Answer 3

Using DotNetZip you can save the zip file directly to the Response.OutputStream. No need for a temporary Zip file.

    Response.Clear();
    // no buffering - allows large zip files to download as they are zipped
    Response.BufferOutput = false;
    String ReadmeText= "Dynamic content for a readme file...\n" + 
                       DateTime.Now.ToString("G");
    string archiveName= String.Format("archive-{0}.zip", 
                                      DateTime.Now.ToString("yyyy-MMM-dd-HHmmss")); 
    Response.ContentType = "application/zip";
    Response.AddHeader("content-disposition", "attachment; filename=" + archiveName);
    using (ZipFile zip = new ZipFile())
    {
        // add a file entry into the zip, using content from a string
        zip.AddFileFromString("Readme.txt", "", ReadmeText);
        // add the set of files to the zip
        zip.AddFiles(filesToInclude, "files");
        // compress and write the output to OutputStream
        zip.Save(Response.OutputStream);
    }
    Response.Close();