CODEWITHSUNDEEP
c#asp.net-mvcrazor
raklos
raklos

Reputation: 28545

model posted back has null values

I have this in my controller, it it being posted to on a form submit.

        [HttpPost]
        public ActionResult Add(OrderDetailsViewModel thisWindowModel)
        {
            if (!ModelState.IsValid)
            {
                return View(thisWindowModel);
            }

When model staie is invalid and I return the model back to the view Im getting an object reference not set exception pointing at this line:

<h2>Order Details:@Model.Style.Name</h2>

I've inspected the "thisWindowModel" as it enters the httppost method, and style is indeed null there.... but why is it doing that?/how to fix?

Update

I have tried adding hiddenfor now too, and even changed my model to to just use stylename as a string but it still fails throws a null refference exception.

 @if(Model==null)
        {
            <h2>model null</h2>

        }else{

            if(Model.StyleName==null)
            {
                <h2>model style null</h2>
            }

        <h2>Order Details:@Model.StyleName</h2>
        }

at the last '}'

Upvotes: 0

Views: 76

Answers (2)

Ehsan Sajjad
Ehsan Sajjad

Reputation: 62488

you have to post the @Model.Style.Name in the form post, you have just used it in your view in heading tag but you need to post all model properties in a form , otherwise it will be posted null

Use @Html.HiddenFor(x=>x.Style.Name) in your form so that this property value is posted in form.

Upvotes: 1

Jonesopolis
Jonesopolis

Reputation: 25370

in your form, add an Html.HiddenFor() for your model item. As you have it, it has no idea how to recreate Model.Style.Name when rebuilding the model on postback.

Upvotes: 1

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