This class presents a WaitHandle with two states: signaled and nonsignaled. If nonsignaled, waiting threads block; otherwise they continue executing. It is constructed with an initial signal value and can be Set( ) to signaled or Reset( ) to nonsignaled. When signaled, the AutoResetEvent automatically resets to nonsignaled once a single blocking thread has been released. Calling Set( ) with no blocking threads causes it to remain signaled until another thread waits on it.

public sealed class AutoResetEvent : WaitHandle {
// Public Constructors
   public AutoResetEvent(bool initialState);
// Public Instance Methods
   public bool Reset( );
   public bool Set( );
}

Hierarchy

System.Object System.MarshalByRefObject WaitHandle(System.IDisposable) AutoResetEvent

Figure 42-3. Thread state transitions