I am building a custom user control. The purpose of this control is to graphically show any number of tiles. These tiles need to be able to moved around, closed, and new ones added, all at runtime. Currently this control will support 10 different tile types. Each tile type will be its own custom user control, implemented through a custom interface.

My plan is to create an interface for the Tiles so each control is built in the same manner and supports certain properties, methods, and events. 

?1. What properties, methods, and events might I need in creating the interface?

At runtime I will serialize/deserialize the UltraTilePanel (SaveAsXML/LoadFromXML)

?2 What type of data is serialized with the SaveAsXML?

?3 Anyone dynamically loading the UltraTilePanel at runtime and care to share what they learned along the way?