Releases all resources used by the current instance of the RegistryKey class.
public void Dispose ();
Dispose when you are finished using the RegistryKey. The
Dispose method leaves the RegistryKey in an unusable state. After calling
Dispose, you must release all references to the RegistryKey so the garbage collector can reclaim the memory that the RegistryKey was occupying.
Dispose before you release your last reference to the RegistryKey. Otherwise, the resources it is using will not be freed until the garbage collector calls the RegistryKey object's