Re: Casting question

> public static void Test()
> {
> B[] b = (B[])Gimme(5); // invalid cast
> }

I'm guessing that's because B is derived from A. All B's are A's, but
not all A's are B's.

> public static A[] Gimme(int i)
> {
> A[] a = new A[i];
> return a;
> }

This method creates A's. None of the created objects have the extra
information necessary to identify them as B's; they are created as A's.
The reverse, however, should work (WARNING -- Outlook compiler in use):

public class A { }

public class B : A { }

public class Tester
{
    public static B[] Gimme(int i)
    {
        B[] b = new B[i];
        return b;
    }

    public static void Test()
    {
        A[] a = (A[])Gimme(5);
    }
}

------------------------------------
Magenic Technologies
Jeff Ferguson
Consulting Manager
------------------------------------

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