Managing file downloads efficiently is a critical part of web development. When users need several documents, asking them to click every single link is a poor experience. The standard solution is to bundle those files into a single ZIP archive on the server and deliver one download.
Always check System.IO.File.Exists(path) before adding a file to the archive to prevent "File Not Found" exceptions during the zipping process. download multiple files as zip archive file in mvc using c#
[HttpPost] public ActionResult DownloadSelected(int[] selectedIds) { // Fetch file paths from database based on selectedIds var filePaths = _db.Files.Where(f => selectedIds.Contains(f.Id)).Select(f => f.Path).ToList(); // Run the ZIP logic... } Use code with caution. Performance Considerations Managing file downloads efficiently is a critical part
The ZipArchive class takes the memory stream and the ZipArchiveMode.Create flag. Setting the leaveOpen parameter to true is vital; it ensures the memory stream isn't disposed of when the archive object is closed. 3. Creating Entries Always check System