multi-threaded application using VB.NET

When a call is made to the Abort method to destroy a thread, the common language runtime(CLR) throws a ThreadAbortException. ThreadAbortException is a special exception that can be caught, but it will automatically be raised again at the end of the catch block. When this exception is raised, the runtime executes all the finally blocks before killing the thread. Since the thread can do an unbounded computation in the finally blocks, you must call the Join method to guarantee that the thread has died. Join is a blocking call that does not return until the thread actually stops executing.

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