Object reference not set to an instance of an object. MVC 5

Question

In my model I have this particular property to add two different model values and show it in my index page.

 public decimal Amount
    {
        get { return Products.Price * Qty; }

    }

When I go to my create page and try to create another sale after I hit submit I get a yellow screen of death with the following:

Object reference not set to an instance of an object.

System.NullReferenceException: Object reference not set to an instance of an object.

It points to this part of my model get { return Products.Price * Qty; }

I'm not really interested in storing anything from here, and I don't even use the Amount property in my create page. Is there a way to tell it to ignore on submit?

Almost all cases of `NullReferenceException` are the same. Please see "[What is a NullReferenceException in .NET?](http://stackoverflow.com/questions/4660142/what-is-a-nullreferenceexception-in-net)" for some hints. — John Saunders, Dec 11 '14 at 00:25
He's not asking what a null reference exception is. He's asking how to get around it in this scenario. — Bob Horn, Dec 11 '14 at 00:26

Bob Horn · Answer 1 · 2014-12-11T00:35:13.520

0

How about this?

public decimal Amount
{        
    get
    {
        if (Products == null) { return 0; }
        return Products.Price * Qty;
    }
}

edited Dec 11 '14 at 00:35

answered Dec 11 '14 at 00:24

Bob Horn

33,387
34
113
219

you'll want that `if` statement *inside* the `get` block – Darren Kopp Dec 11 '14 at 00:28

Object reference not set to an instance of an object. MVC 5

1 Answers1