TypeBuilder.DefineMethodOverride Method
The declaration can be made to a method defined on an interface implemented by the type, a method on a derived class, or a method defined in the type. If the declaration is on an interface only, the slot defined for the interface is altered. If the declaration is made to a method on a base type, the slot for the method is overridden and any duplicates for the overridden method are also replaced. The overridden method cannot be the actual method that is declared. If the method is on the same type, the slot is replaced and any duplicates for the replaced methods are overridden.
Если можно, то объясните пошагово каждое предложение, а то ничего не понятно.
