Here Mudassar Ahmed Khan has explained ith an example, how to upload File without Form Submit (PostBack) using jQuery AJAX in ASP.Net using C# and VB.Net.The Generic Handler will be used to upload and save files in Folder (Directory) in ASP.Net.The Generic Handler will be called using jQuery AJAX and the file will be uploaded to Folder (Directory) with Progress Bar using HTML5 Form Data and XmlHttpRequest (XHR).
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The uploaded File is read from the Request.Files collection and is saved to a Folder (Directory) on Server’s Disk.
The HTML Markup consists of a Form with an HTML FileUpload element and a Button. Below the Form there’s an HTML5 Progress element for displaying the progress of the uploading File.
The Upload Button has been assigned a jQuery Click event handler. When the Upload button is clicked, an AJAX call is made to the Generic Handler using jQuery.
The data of the selected File is read into an HTML5 FormData JavaScript object and the File is uploaded using XmlHttpRequest (XHR).
A Progress event handler is attached to the XmlHttpRequest (XHR), which displays the progress of the File being uploaded using the HTML5 Progress element.
script type=”text/javascript” src=”https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js”>script>
The above code has been tested in the following browsers only in versions that support HTML5.
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