Writing multiple file uploads at a time to functionality in dot net (C # in particular)

Question

I want to write "upload multiple files at a time" when uploading files to dot net. Any help would be greatly appreciated. I am not allowed to use jQuery. All I want is the main point.

Answer 1

It just can't be done in HTML4. But in HTML5 you can use

<input type="file" multiple> 

http://www.w3.org/TR/html-markup/input.file.html#input.file.attrs.multiple