title: Object reference not set to an instance of an object. MVC 5
body: <p>In my model I have this particular property to add two different model values and show it in my index page.</p>
  
  <pre><code> public decimal Amount
      {
          get { return Products.Price * Qty; }
  
      }
  </code></pre>
  
  <p>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:</p>
  
  <p>Object reference not set to an instance of an object.</p>
  
  <p>System.NullReferenceException: Object reference not set to an instance of an object.</p>
  
  <p>It points to this part of my model  get { return Products.Price * Qty; }</p>
  
  <p>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?</p>