Releases all resources used by the current instance of the System.Threading.WaitHandle class.
This method is equivalent to the WaitHandle.Close method, but it can be called by using the IDisposable interface.
Call Dispose when you are finished using the System.Threading.WaitHandle. The Dispose method leaves the System.Threading.WaitHandle in an unusable state. After calling Dispose, you must release all references to the System.Threading.WaitHandle so the garbage collector can reclaim the memory that the System.Threading.WaitHandle was occupying.
For more information, see Cleaning Up Unmanaged Resources and Implementing a Dispose Method.
Always call Dispose before you release your last reference to the System.Threading.WaitHandle. Otherwise, the resources it is using will not be freed until the garbage collector calls the System.Threading.WaitHandle object's Finalize method.