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BOOK: Professional Web Parts and Custom Controls ASP.NET ISBN: 0-7645-7860-X
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Old January 11th, 2006, 11:08 PM
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Default MyBase.CreateChildControls

Hi,

On page 72 you said we can enable design time support and avoid the CreateChildControls method to be called twice if we set Me.ChildControlsCreated = True. I understand this part, but why would you need to call

MyBase.CreateChildControls()

immediately above

Me.ChildControlsCreated = True

?

Thanks

 
Old January 15th, 2006, 06:26 PM
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Default

That's a very good question since MyBase.CreateChildControls is going to set ChildControlsCreated anyway.

It's a good practice to always call the base method to make sure that any necessary work that the base method carries out is done. In this case, for instance, calling the base method would take care of setting ChildControlsCreated.

I should have put in one line or the other but not both. Since the sample was intended to show how to use ChildControlsCreated, I should have omitted the call to the base method. While calling the base method does no harm here, it also does no good.

In fact, throughout the book, I typically omit the call to the base method in order to focus attention on the code technique that I'm demonstrating. That would have been an excellent choice here.

When you have eliminated all which is impossible, then whatever remains, however improbable, must be the truth.

- Sherlock Holmes, as recorded by Sir A. C. Doyle in "The Blanched Soldier"





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