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Overview

The ASP.NET Core File Upload is a control for uploading one or multiple files, images, documents, audio, video, and other files to a server. It is an improved version of the HTML5 upload control (<input type="file">) with a rich set of features that include multiple file selection, progress bars, auto-uploading, drag and drop, folder (directory) uploading, file validation, and more.


Why choose Syncfusion ASP.NET Core File Upload?

ASP.NET Core File Upload with multiple file upload options.

Multiple-file upload

Select multiple files and upload them to a server at the same time. This is useful for uploading images to a gallery and for file-sharing applications. 

Drag and drop files in ASP.NET Core File Upload.

Drag and drop

Upload multiple files by simply dragging them from the file explorer to the drop area (drop zone), which is a more user-friendly way to select and upload multiple files. 

Folder upload in ASP.NET Core File Upload.

Folder upload

Accepts a folder (directory) as a file source for uploading all the files (including subfolders) of the selected folder.

ASP.NET Core File Upload AJAX file uploader.

AJAX file uploader

Using the AJAX library, the ASP.NET Core File Upload control easily uploads files in asynchronous mode. 

ASP.NET Core File Upload utilize chunk upload for large files.

Utilize chunk upload for large files

Manage upload of large file uploads efficiently using chunk upload that slices a large file into smaller chunks and uploads to the server in a sequential order asynchronously.

Create your own template designs in ASP.NET Core File Upload.

Create your own template designs

Allows users to create a custom UI in the ASP.NET Core File Upload based on their application need using a wide range of template options.

ASP.NET Core File Upload with attractive customizable themes.

Attractive customizable themes

Cutting edge design with 5+ built-in themes such as Fluent, Tailwind CSS, Bootstrap, Material, Fabric, and more. Utilize the online Theme Studio tool to customize themes of File Upload easily.

Globalization and localization in ASP.NET Core File Upload.

Globalization and localization

Enables users from different locales to use the File Upload by formatting dates, currency, and numbering to suit their preferences.


ASP.NET Core File Upload Code Example

Easily get started with the ASP.NET Core File Upload using a few simple lines of CSHTML and C# code example as demonstrated below. Also explore our ASP.NET Core File Upload Example that shows you how to upload files in ASP.NET Core.

@using Syncfusion.EJ2

@section ControlsSection{
    <div class="col-lg-8 control-section">
        <div class="control_wrapper">
        <ejs-uploader id="uploadFiles" autoUpload="false">
        </ejs-uploader>
        </div>
    </div>
}
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;

namespace EJ2CoreSampleBrowser.Controllers.TextBoxes
{
    public class UploaderController : Controller
    {
        public ActionResult DefaultFunctionalities()
        {
            return View();
        }
    }
}

Resumable upload

A built-in feature is available to pause, resume, retry, and cancel a file upload in ASP.NET Core. This helps users upload high-resolution images, videos,and other large files safely. Additionally, it provides an option to pause and resume automatically based on server connection.

ASP.NET Core File Upload with pause, resume, retry, and cancel.


ASP.NET Core image upload with its preview thumbnails.

Upload images with previews

The ASP.NET Core File Upload control allows you to upload images and resize images, show an image preview or thumbnail, etc. before uploading them.


Custom file upload button

The action buttons of the ASP.NET Core File Upload control are completely customizable, including its file list, which helps create your own design for the file upload UI.

ASP.NET Core File Upload with customized buttons.


Upload various file types in ASP.NET Core File Upload.

File types (file extensions)

Upload various file types and limit the file types from client-side, which is mandatory before uploading a file to the web application.


File validation (filter)

Add validation to check file size limits with minimum and maximum ranges, number of files required, total size, and MIME type before uploading a file to a server.

Restricts file size in ASP.NET Core File Upload.


ASP.NET Core File Upload process images from clipboard on paste.

Paste image to upload

The ASP.NET Core File Upload control processes images from the clipboard, also. Simply copy and paste the images to be uploaded to a server.


Delete uploaded files

The ASP.NET Core File Upload control provides a simple interface to delete the wrongly uploaded files from a server.

Remove the uploaded files in ASP.NET Core File Upload.


ASP.NET Core File Upload with preload uploaded files option.

Preload uploaded files

Users can configure previously uploaded files from the server. This is useful to view and remove files from the server.


Auto-upload

Initiate an automatic upload to upload files immediately upon adding them to the upload queue with ASP.NET Core File Upload.

ASP.NET Core File Upload with automatic upload.


ASP.NET Core File Upload with progress bar.

Progress bar

The ASP.NET Core File Upload control displays a built-in progress bar (progress indicator) with the progress percentage during each file upload. The bar is completely customizable.


Right-to-left (RTL)

The ASP.NET Core File Upload control supports right-to-left rendering, which improves the user experience and accessibility for those who use RTL languages.

ASP.NET Core File Upload with right-to-left mode.


Additional parameters

The ASP.NET Core File Upload control allows you to pass additional parameters along with an upload request as an HTTP header or custom parameters.

Standard HTML forms

The ASP.NET Core File Uploader control has form support (synchronous mode) to work with native HTML forms.


ASP.NET Core File Upload covers web accessibility.

Web accessibility

  • Fully supports WAI-ARIA accessibility, which allows the ASP.NET Core File Upload control to be accessed by on-screen readers and assistive devices.
  • Follows the WAI-ARIA Best Practices for implementing keyboard interaction.
  • The UI element visuals, such as foreground color, background color, line spacing, text, and images, were designed based on the WCAG 2.0 standard.

ASP.NET Core File Upload works well in touch devices.

Touch support

The ASP.NET Core File Upload control provides the best user experience across phone, tablet, and desktop form factors.





Other supported frameworks

File Upload is also available in Blazor, Angular, React, Vue, and JavaScript frameworks. Check out the different FileUpload platforms from the links below,

Supported browsers

The ASP.NET Core File Upload works well with all modern web browsers such as Chrome, Firefox, Microsoft Edge, Safari, and Opera.

Supported browsers in ASP.NET Core File Upload.

85+ ASP.NET CORE UI CONTROLS

Frequently Asked Questions

The ASP.NET MVC File Upload control supports various features listed below:

  • Extended version of the HTML5 file upload with a progress bar and flexible UI file list.
  • NET Core multiple-file upload with form support, drag and drop, progress bar, folder upload, and more.
  • Large file upload with pause, resume, retry, and cancel options using chunking.
  • One of the best ASP.NET Core File Upload in the market that offers feature-rich UI to interact with the software.
  • Completely customizable using templates.
  • Simple configuration and API.
  • Supports all modern browsers.
  • Mobile-touch friendly and responsive.
  • Expansive learning resources such as demos, and documentation to learn quickly and get started with ASP.NET Core File Upload.

We do not sell the ASP.NET Core File Upload separately. It is only available for purchase as part of the Syncfusion ASP.NET Core suite, which contains over 85 ASP.NET Core components, including the File Upload. A single developer license for the Syncfusion Essential Studio for ASP.NET Core suite costs $995.00 USD, including one year of support and updates. On top of this, we might be able to offer additional discounts based on currently active promotions. Please contact our sales team today to see if you qualify for any additional discounts.

You can find our ASP.NET Core File Upload demo, which demonstrates how to render and configure the File Upload control.

No, our 85+ ASP.NET Core components, including File Upload, are not sold individually, only as a single package. However, we have competitively priced the product so it only costs a little bit more than what some other vendors charge for their File Upload alone. We have also found that, in our experience, our customers usually start off using one of our products and then expand to several products quickly, so we felt it was best to offer all 85+ ASP.NET Core components for a flat fee of $995/developer. On top of this, we might be able to offer additional discounts based on currently active promotions. Please contact our sales team today to see if you qualify for any additional discounts.

No, this is a commercial product and requires a paid license. However, a free community license is also available for companies and individuals whose organizations have less than $1 million USD in annual gross revenue, 5 or fewer developers, and 10 or fewer total employees.

A good place to start would be our comprehensive getting started documentation.

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