HI . i want to create a list tht has properties of two different class.
suppose i have to class named Cats and Dogs then i want to create a list named PetAnimals which has properties of both Cats and Dogs class.Is that possible and if yes then how and if no then why??

When you say 'properties' do you just mean you want to be able to add both Cats and Dogs to an array?

To do this you must ensure that the array will take objects that are a common parent of both the Cat and Dog class. So either these classes must inherit from a common base class (such as 'Animal') or you will have to use the Object class, which is the base class of all classes.

/- Sam Judson : Wrox Technical Editor -/