Based on culture name from english keyboard how can i type other language in c# -

in c# web application, have drop down culture names , text box , based on culture name drop down want enter text in text box in language ,

suppose drop down culture name selected "de-de" when enter value in text box value in dutch language, won't effect whole application.

please give idea how can work on it.

this might give idea of localization.

this 1 .net 4.0 help.