Seeing as you want to add tabs dynamically, I think the most elegant solution would be to make a custom property for the tab control - you could then store the definition of each tab in a string as xml or something clever.

The most comprehensive guide to creating custom properties is found here: http://joelabrahamsson.com/entry/how-to-create-a-custom-episerver-property

Hi Jan

Check out the Multiple Property control I have created http://episerveresmp.codeplex.com/

This would allow you to easily create a property for your custom tabs.

You could also override the CreateDefaultViewControls method within the property implementation to render the relevant markup when bound to an EPiSever:Property.

Full usage documentation can be found here

Lee