c# - Object Reference not set to an object (calling Razor model from View) -

this question has answer here:

• what nullreferenceexception, , how fix it? 29 answers

using c# mvc4

my view:

@using universe.models @model usermodel @section css { <link href="@url.content("~/content/assets/charcreation.css")" rel="stylesheet"/>} @using (html.beginform("adduser","home", formmethod.post)) {  <div class="row-fluid">             <table id="tblbio">                 <tr>                     <td class="span3">                         <span class="labeltext">alias:</span>                     </td>                     <td class="span5">                         @html.textbox(model.alias)                     </td>                     <td class="span4">                         <span class="ui-state-highlight hidden"></span>                     </td>                 </tr> 

my model:

public class usermodel {     public int id { get; set; }     public string alias { get; set; }     public string email { get; set; }     public string password { get; set; }     public bool isexternal { get; set; }       public usermodel()     {      }      public usermodel(user user)     {         if (user == null) return;         alias = user.alias;     } } 

but, keep getting error:

when try debug it, doesn't go html.textbox method or model.

without seeing controller action, guess model null.

in controller, make sure passing instance of model view. example:

return view(new usermodel()); 

instead of:

return view();