Checking to see if ViewBag has a property or not, to conditionally inject JavaScript

Question

Consider this simple controller:

Porduct product = new Product(){
  // Creating a product object;
};
try
{
   productManager.SaveProduct(product);
   return          


        

Answer 1

You can use ViewData.ContainsKey("yourkey").

In controller:

ViewBag.IsExist = true;

In view:

if(ViewData.ContainsKey("IsExist")) {...}