I recommend not to use GC (
http://msdn.microsoft.com/en-us/library/system.gc.aspx[
^]) at all unless you understand very well how Garbage Collector works and find a
really good reason to use it. Normally, Garbage Collector works quite well without any calls to GC.
As you're asking this question,
you're certainly not the one who understand it so well and get an idea how and why to use GC explicitly. Conclusion:
you should not do it.
—SA