What is a context?
<p>It seems to me that a Context class is a control console that its object can invoke any included functions, such as Datacontext and DoaminContext in WCF Ria service. Do I understand this concept correctly? If so, in what circumstances do I need to create a context class in my own class hierarchy?</p>

<p>Beside DataContext, what other well-known Context classes do the .net framework have?</p>
