Object Reference not set to an object (calling Razor model from View) [duplicate]

Question

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, I keep getting the error:

enter image description here

When I try to debug it, it doesn't even go into the Html.TextBox method or into my model.

For kicks, can you show your Controller Action..where you call the view? — ltiong_dbl
– ltiong_dbl, Commented Aug 24, 2013 at 1:02
Well, maybe it's just really not set to an instance of object? Have you checked if Alias isn't null? — VsMaX
– VsMaX, Commented Aug 24, 2013 at 1:26
Almost all cases of NullReferenceException are the same. Please see "What is a NullReferenceException in .NET?" for some hints. — John Saunders
– John Saunders, Commented Aug 24, 2013 at 1:43
I am sorry guys, I am new to MVC.. but based on the responses below.. it was my controller class, I was not passing my Model. I thought controller classes were only invoked on Posts. — ArjaaAine
– ArjaaAine, Commented Aug 24, 2013 at 17:40

htxryan · Accepted Answer · 2013-08-24 01:54:07Z

32

Without seeing your controller action, my guess would be that your model is null.

In your controller, make sure you are passing an instance of the model to your view. For example:

return View(new UserModel());

Instead of:

return View();

answered Aug 24, 2013 at 1:54

htxryan

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Comments

Imad Alazani · Accepted Answer · 2013-08-24 05:09:20Z

6

You have to pass your Model in your Controller Action when return the specific View

return View(new Model());

edited Aug 24, 2013 at 5:09

Imad Alazani

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answered Aug 24, 2013 at 4:35

imsurya

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