c# - Razor DDL to Model -

i trying head around drop down lists mvc, appears failing me. i've been tinkering code shown below can't right.

what trying achieve simple - hard coding drop down options in controller, have them appear in razor rendered html , when option selected, selected value bound string property in model.

with code below can't access li within view.

i've seen other guides haven't been able make work, binding model best option me, given i'm trying achieve, or viewbag etc better?

could show me i'm going wrong please?

model

public class viewmodel {     public string myoption { get; set; } } 

view

@model viewmodel @html.dropdownlistfor(m => m.myoption, li, "--select--") 

controller

public actionresult index()         {             list<selectlistitem> li = new list<selectlistitem>();             li.add(new selectlistitem { text = "option one", value = "option1" });             li.add(new selectlistitem { text = "option two", value = "option2" });             return view(li);         } 

you need pass myoption view if want use it. valid option creaete view model class containing information need handle on view

viewmodel

public class viewmodel {     public ilist<selectlistitem> itemlist {get; set;}     public string myoption { get; set; } } 

view

@html.dropdownlistfor(m => m.myoption, model.itemlist, "--select--") 

controller

public actionresult index() {     var li = new list<selectlistitem>();     li.add(new selectlistitem { text = "option one", value = "option1" });     li.add(new selectlistitem { text = "option two", value = "option2" });     var viewmodel = new viewmodel      {          itemlist = li,          myoption = [here code fill this]      }      return view(viewmodel); }