File manager in asp.net

Question

Hello everybody!
I have just seen the open source with php language(open cart).And i see in the administrator of that website have file manager to manage image or other file. i mean when you want to add image into website. So you just click on image symbol and file manager appear and then you double click on images that you want .That is it. I looking for something like that but have not.I think that jquery tool and some one know the file manager like that to apply in Asp.net ,please tell me know. Thanks so much .And this is the link for that website:http://demo.opencart.com/admin/index.php?route=catalog/category/insert&token=cc9b353e7a28981c63dfd7f931ff2349