I think that Paul did a good job of explaining this stuff in his reply to you ...

~~Bonnie


>>Charles,
>>
>>I haven't downloaded the sample, so I can't see exactly what you have, but I'd say there's two things that might be missing.
>>
>>One, in the solution, you might not have a reference to the project that contains CustomerOrdersForm and
>>
>>Two, in MainAppForm, it's possible that the "using NamespaceContainingTheForm" statement is missing.
>>
>
>re one : CustomerOrdersForm.cs appears in the solution explorer - i.e. I *think* they are in the same project. Is there something else I should be looking for regarding that?
>
>re two : MainAppForm has the same using statements as in Kevin's
>
>both of the forms begin with
>
>namespace HW.NetBook.Samples
>
>I guess this is what I find confusing re namespaces. Are they like classlibs? It seems classes defined under the namespace statement become part of that namespace. They are then available in other forms etc. if you begin with a using statement referencing that namespace. But this would make it seem that both of these forms are defining classes which are part of the HW.NetBook.Samples namespace
>
>I think there is a conceptual thing here re namespaces that is preventing me from spotting what I am boneheadedly doing wrong in the code (amazing how the critical debugging eye fails when you really don't know what you are looking for . I feel like I am proofreading Ukranian free-verse < g > )