Re: Building a rendered control with child controls

Hi TS,

I think a TextBox with validation is a special case here since you could
either use a composite control or implements IValidator interface to add
validation function to a class
(http://www.codeproject.com/aspnet/selfvalidatingtextbox.asp).

For a composite control with a single constituent control, the difference
between composition and inheritance would be:

1) A composite control will need to implement INamingContainer, which will
create a naming container for the children.

2) Inherited control still has public methods/properties for your user,
while a composite control will have to expose the only child to let your
user use the properties/methods directly.

Other than these, I believe other things such as performance will not be
affected.

Regards,
Walter Wang (wawang@xxxxxxxxxxxxxxxxxxxx, remove 'online.')
Microsoft Online Community Support

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