>>If you take the code from yesterday and omit the 'new' keyword, then hit F6, I get this
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>>Warning	3	'OrderB.OrderItems' hides inherited member 'Order.OrderItems'. Use the new keyword if hiding was intended.	D:\vs\Project\Test\Test\Test\Test.cs	66	26	Test
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>Which means that if you don't put the "new" keyword, it still works and "hides" the inherited member, so it's not really necessary ... except that you'll always get the warning. So, as a good programming practice, you *should* use the new keyword to avoid confusion. The warning is there in case you didn't mean to code it that way to hide the inherited member.
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>~~Bonnie

Yes, I guess you're right, Bonnie

One thing I noticed though - without the new keyword - if you debug the B class, you see the 'old' property (as base.OrderItems with a count of zero) that is being hidden whilst with the new keyword, you do not