Killing all threads that opened by application

Question

I have some really big application mixture of c# and j#.

Sometimes when I close it, there are some threads that are not closed and they are hanging in the task mana

Answer 1

internal void Close()
{
    Dispatcher.CurrentDispatcher.Thread.Abort();
    Application.Current.ShutdownMode = ShutdownMode.OnExplicitShutdown;
    Application.Current.Shutdown();
}