dxFileUploader - How to upload files to the server in an ASP.NET Web Forms application

This example demonstrates how to upload files to the server by using the dxFileUploader widget in an ASP.NET WebForms application. Two approaches are illustrated:

1) Uploading files by using a custom HTTP Handler.
2) Uploading files when the form is submitted.

See also:
T365089: dxFileUploader - How to upload files to the server in an ASP.NET MVC application