AJAX File Upload Using ASP.NET Core

File Upload Through JQuery AJAX In ASP.NET MVC. This source code shows a demo and describes how to upload a file in ASP.NET Core MVC using jQuery Ajax.

What is FormData?

In the C#, The FormData interface provides a way to easily construct a set of key/value pairs representing form fields and their values, which can then be easily sent using the XMLHttpRequest.send() method. It uses the same format a form would use if the encoding type were set to "multipart/form-data".