Assign an additional parameter to the the C# class object -

I have a method GetProduct, which returns a product object and says, I return an extra parameter with the object I want to, how can I apply it? In my example below, how can I return 'Eastics'?

  public product GetProduct () {--- ---- boolExists = true return new product (); }   
 I do not want to add that parameter as a property in the product category.  
 Any help on this is greatly appreciated!  
 
  thanks, ear   
 
  
 And the call is like this:  
  bool isExists; Product P = GetProduct (Exists Out)   
 However I think  isExists  is the property that you want in your product category ...