'HttpPostedFileBase' in Asp.Net Core 2.0

'HttpPostedFileBase' in Asp.Net Core 2.0

In ASP.NET Core, HttpPostedFileBase from the older ASP.NET framework has been replaced with IFormFile. To handle file uploads in ASP.NET Core 2.0, you should use the IFormFile interface.

Here's an example of how to handle file uploads using IFormFile in ASP.NET Core 2.0:

  • Create a form in your view (e.g., Index.cshtml) with an input field of type file:
<form asp-action="Upload" method="post" enctype="multipart/form-data"> <div> <input type="file" name="file" /> </div> <button type="submit">Upload</button> </form>
  • In your controller, create an action method that accepts an IFormFile parameter:
using Microsoft.AspNetCore.Http; using Microsoft.AspNetCore.Mvc; using System.IO; using System.Threading.Tasks; public class HomeController : Controller { // Other actions and methods [HttpPost] public async Task<IActionResult> Upload(IFormFile file) { if (file != null && file.Length > 0) { var fileName = Path.GetFileName(file.FileName); var filePath = Path.Combine(Directory.GetCurrentDirectory(), "wwwroot/uploads", fileName); using (var stream = new FileStream(filePath, FileMode.Create)) { await file.CopyToAsync(stream); } ViewBag.Message = "File uploaded successfully"; } else { ViewBag.Message = "File not selected"; } return View("Index"); } }

In this example, the Upload action accepts an IFormFile parameter named file. The action checks if the file is not null and has a non-zero length. If so, it saves the file to the wwwroot/uploads directory within the application.

Make sure to create the uploads folder inside the wwwroot directory before running the application.

This example demonstrates how to handle file uploads using IFormFile in ASP.NET Core 2.0. The Index.cshtml view contains a form with a file input field, and the HomeController has an Upload action method that processes the file upload.

Examples

  1. "Asp.Net Core 2.0 file upload using HttpPostedFileBase"

    • Description: Learn how to perform file uploads in Asp.Net Core 2.0 using HttpPostedFileBase.
    [HttpPost] public IActionResult UploadFile(HttpPostedFileBase file) { // Your file upload logic here return View(); }

  2. "Asp.Net Core 2.0 file upload controller action"

    • Description: Explore controller actions for handling file uploads in Asp.Net Core 2.0.
    [HttpPost] public IActionResult UploadFile(IFormFile file) { // Your file upload logic here return View(); }

  3. "Asp.Net Core 2.0 file upload to specific folder"

    • Description: Learn how to configure Asp.Net Core 2.0 to save uploaded files to a specific folder.
    var filePath = Path.Combine("wwwroot/uploads", file.FileName); using (var fileStream = new FileStream(filePath, FileMode.Create)) { file.CopyTo(fileStream); }

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