c# - Sending a phrase (variable) from searcher (from view) to controller, asp.net mvc -

i'm trying create searcher in asp.net. i'm green it. i'm trying create in view , send controller variable, has text written in searcher. in moment, have smth --> question is, , how create , send variable , give data written in searcher?

layout

form class="navbar-form navbar-left" role="search">             @using (html.beginform("index", "searcher", formmethod.post, new { phrase = "abc" }))             {                 <div class="form-group">                     <input type="text" class="form-control" placeholder="wpisz frazę...">                 </div>                 <button type="submit" class="btn btn-default">@html.actionlink("szukaj", "index", "searcher")</button>             }         </form> 

controller

 public class searchercontroller : applicationcontroller {     [httpget]     public actionresult index(string message)     {         viewbag.phrase = message;         getcurrentuser();         return view();     }  } 

view

@{ viewbag.title = "index";  }  <h2>index</h2> <ul>     <li>@viewbag.message</li> </ul> 

you're missing key part of mvc -> model.

let's create 1 first:

public class searchmodel {     public string criteria { get; set; } } 

then let's update "layout" view (don't know why had form in form?):

@model searchmodel          @using (html.beginform("index", "searcher", formmethod.post, new { phrase = "abc" }))         {             <div class="form-group">                 @html.editorfor(m => m.criteria)             </div>             <button type="submit" class="btn btn-default">@html.actionlink("szukaj", "index", "searcher")</button>         } 

then action serves view:

[httpget] public actionresult index() {     return view(new searchmodel()); } 

then post method be:

[httppost] public actionresult index(searchmodel model) {     viewbag.phrase = model.criteria;     getcurrentuser();     return view(); }