Complex lookups in asp.net mvc -

i have extensive experience in windows forms beginner in asp.net mvc. in windows form applications it's common include textbox user must enter business partner (his id precise) example. users don't know id provide autocomplete works on id or name. but, not enough either textbox within user control has search button in turn opens dialog form user can search dictionary name, adress, phone number, etc... scenario common in applications.

so, how handle scenario in asp.net mvc in consistent manner? best practices handling lookups big simple dropdown/autocomplete textbox?

thanks.

well, in javascript can use popup window or (for more modern approach) use jquery-ui dialog , display form user (which partial view or rendered childaction). 1 user's done making selection can bind dialog closing , place final result in original id.