Answer by Lalit Kale for How can I restrict the event that must be initiated the request from the web in MVC,I must prevent the request from winform or other client?

Erik is right.However, If your question is looked from different perspective, it seems like you are looking for some sort of Authentication mechanism. Are you sure you are not looking for Authentication?

If that is the case, go for looking into FormsAuthentication and in your action method, check whether request is authenticated request.