inheritance - Passing namespace in C# -

we have exercise inheritance in c#. problem put in question mark , in if statement know program passed person class or animal class or class under inventoryapplication namespace. :)

private void addbutton_click(object sender, eventargs e) {      logic_layer.logic logic = new logic();      //logic.add<person>(); }  namespace logic_layer {      public class logic     {         public void add<inventoryapplication>() inventoryapplication : ?         {             //if { }         }          public void delete() { }         public void edit() { }         public void search() { }         public void searchall() { }     } } 

you can't use such statement in constraint. however, later in method can this:

if (typeof(myobject).namespace == "inventoryapplication") { ... } 

what better if classes want test (animal, person etc.) implement interface (say, imyinterface).

for example:

 void add<t>(<t> param) t : imyinterface {/*...*/}