What is the usage of the fileupload control?

The file upload control is used on webpages to enable the functionality of uploading files. With this control, users can select the file they want to upload and send it to the server.

The basic usage of the fileupload control is as follows:

1. Add an input element to the fileupload control in the HTML page, and set the type attribute to “file”.

<input type="file" id="uploadFile" name="uploadFile">

1. Retrieve the value of a fileupload control using JavaScript code.

var fileInput = document.getElementById("uploadFile");
var file = fileInput.files[0];

1. Upload files to the server through form submission or Ajax.