Example of dynamically generating a zip file download from ASP.NET, with minimal threading and memory usage.
Specifically, with this code:
- No file is ever completely in memory at any time. As files are read, they are immediately compressed and sent to the browser.
- No threads are ever blocked waiting on reads or writes. The fully-asynchronous code permits threads to return to the thread pool unless they are actually executing code.
There are four examples in this repository, each on its own branch:
- core-ziparchive - ASP.NET Core using the built-in
ZipArchive - core-dotnetzip - ASP.NET Core using
DotNetZip(which restricts this application to the full .NET Framework) - full-ziparchive - ASP.NET WebAPI using the built-in
ZipArchive - full-dotnetzip - ASP.NET WebAPI using
DotNetZip
Both of the ZipArchive repositories include a workaround for a bug in that class.
Both of the ASP.NET Core repositories include their own FileCallbackResult to asynchronously stream output on demand.