c# - How can I test MVC Views? -

my page has following hidden field

<%= html.hidden("sessionid", model.form.uniquesessionid) %> 

my controller

public class somecontroller  {     public actionresult index()     {         var somemode = new getsomemodel();         return view(somemodel);     } } 

i wanna able test whether view has hidden field

protected somecontroller controller;  protected void setupcontroller() {    controller = new somecontroller() }  [test] public void view_has_hidden_field_for_sessionid() {     viewresult result = controller.index() viewresult;     assert.istrue(result.contains("<input type="hidden" id="sessionid" />")); } 

question is: how can render view string? help?

take @ solution has support razor views , standard asp.net views:

render view string

my other advice use html parser such htmlagilitypack can query find hidden field. approach better testing string.contains make tests brittle when refactor html.