Inventory Item Database Help

So I'm working on creating an Editor GUI for an item database, and the way I have my inventory item system set up is that there are 3 types of items: equipment items, active items, and passive items. Passive items are the base item, and both equipment items and active items extend from the base item. So I need my Editor GUI to be able to distinguish between these types of items.
So the plan right now for me is to use

Code (csharp):

1. is

to check the type of the item. Is this bad practice and should I therefore instead cache the item type and use that? Or does anyone know an even better way to make an inventory item system?

Thanks in advance guys!

 

first, I could explain that you can get the types and reference them against eachother...

Code (csharp):

1.  
2. string typeName = "Passive";
3. if(obj.GetType() == Type.GetType(Passive)) typeName = "Active";
4. if(obj.GetType() == Type.GetType(Equipment)) typeName = "Equipment";
5.  

but a much simpler solution is to add typeName as a public string variable in the class. Then all you have to do is get the string rather than put references to types in scripts.