Has anyone successfully created a custom property tab for a custom web server
control?

How do you implement collection property persistence?

I have tried "PersistenceMode(PersistenceMode.InnerDefaultProperty)" on my
collection property - this successfully generates the proper xml in the HTML
design area. However, it will not run because it says the property doesn't
exist.

I have been unable to find a sample implementing a web server control with
property tab.