This example demonstrates how to use LocationInterceptionAspect to persist a field or property in the ASP.NET session state or page view state.

• The SessionStateAttribute class is a Aspect that persists a field or property into the session state. This attribute can be added to any field or property. This aspect is a simple implementation of LocationInterceptionAspect.

• The ViewStateAttribute class is a Aspect that persists a field or property into the view state of the current page. This attribute should be added to an instance field or property of a type derived from System.Web.UI.Control. The ViewStateAttribute aspect is more complex because it needs to access the ViewState property, a protected property of the Control class. Therefore, we have to use the [ImportMember] advice and the IInstanceScopedAspect interface.