How do I handle file uploads/downloads

In C#, handling file uploads and downloads can be done through ASP.NET applications, allowing you to manage files effectively. This process involves using `HttpPostedFileBase` for uploads and the `HttpResponse` for downloads.

For file uploads, you'll typically use a form to select files, which are then processed on the server side. For downloads, you can send the file back to the client using an appropriate content type and headers.

Example Code for File Upload

// This example demonstrates a simple file upload handling in an ASP.NET MVC application. [HttpPost] public ActionResult Upload(HttpPostedFileBase file) { if (file != null && file.ContentLength > 0) { var fileName = Path.GetFileName(file.FileName); var path = Path.Combine(Server.MapPath("~/UploadedFiles"), fileName); file.SaveAs(path); ViewBag.Message = "File uploaded successfully!"; } return View(); }

Example Code for File Download

// A simple example demonstrating file download in ASP.NET MVC. public ActionResult Download(string fileName) { var path = Path.Combine(Server.MapPath("~/UploadedFiles"), fileName); byte[] fileBytes = System.IO.File.ReadAllBytes(path); return File(fileBytes, System.Net.Mime.MediaTypeNames.Application.Octet, fileName); }

file upload file download C# file handling ASP.NET file management HttpPostedFileBase

Related Questions

How do I avoid rehashing overhead with std::set in multithreaded code?

How do I find elements with custom comparators with std::set for embedded targets?

How do I erase elements while iterating with std::set for embedded targets?

How do I provide stable iteration order with std::unordered_map for large datasets?

How do I reserve capacity ahead of time with std::unordered_map for large datasets?

How do I erase elements while iterating with std::unordered_map in multithreaded code?

How do I provide stable iteration order with std::map for embedded targets?

How do I provide stable iteration order with std::map in multithreaded code?

How do I avoid rehashing overhead with std::map in performance-sensitive code?

How do I merge two containers efficiently with std::map for embedded targets?