c# - How to return updated partial View along with its parent View (postback) -

i have parent view 2 partial views inside it, partial views contains few textbox , button, when submit button, partial views show message. code below :

view :

<%@ page title="" language="c#" masterpagefile="~/views/shared/site.master" inherits="system.web.mvc.viewpage(of test.parentmodels)" %>  <% html.renderpartial("login", model.loginmodel)%> <% html.renderpartial("register", model.registermodel)%> 

model :

public class loginmodel {     //code here }  public class registermodel {     //code here }  public class parentmodel {     public loginmodel loginmodel {get; set;}     public registermodel registermodel {get; set;} } 

controller :

//login page call method on submit public login(loginmodel model)  {     //do changed login html view     return view("login", model); } 

the problem don't know how return updated partial view along parent (postback) , don't want use ajax achieve this. tried both return view("login", model) , return partialview("login", model), both shows partial view without parent. appreciated , sorry bad english.

since want full page postback, though postback partialview part, in corresponding action method need return main view(which has 2 partials in case) , also capture whatever state required postback , set model object ( if need persist state) expected main view.

e.g.

return view("parentviewname",objparentmodel);