The Clone() method returns a new array (a shallow copy) object containing all the elements in the original array.
The CopyTo() method copies the elements into another existing array.
Both perform a shallow copy. A shallow copy means the contents (each array element) contains references to the same object as the elements in the original array.
A deep copy (which neither of these methods performs) would create a new instance of each element's object, resulting in a different, yet identacle object.

System.Array.CopyTo() method copies all the elements of the current one dimensional Array to the specified one dimensional Array.

System.Array.Clone method creates a shallow copy of the Array.

A shallow copy of Array copies only the element of the Array, whether they are referenced types or value types, but it does not copy the object that the references refer to. The references in the new Array point to the same objects that the references in the original Array point to. In contrast the deep copy of an Array copies the elements and everything directly or indirectly referenced by the elements.

For more see below, Here a lot of discussion...

http://www.discussweb.com/c-programm....html#post8506

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