C# expiration date

Question

I am working with a C#.net 2008 console/windows form application that has imbedded third components. The third part components are written with visual studio.net 2005 and possibly some other language.

My question is, do you know of some why I can see if the third party components will expire at somec point? Basically is there something I can look at to see if those components will stop executing at some point? If so, can you point me to a how to determine what the expiration date is and/or point me to a url I can use as a reference?