www.pudn.com > WorkerThread_demo.rar > LongProcess.cs

using System; 
using System.Windows.Forms; 
using System.Threading; 
 
 
namespace WorkerThread 
{ 
	/// 
 
	/// Class emulates long process which runs in worker thread 
	/// and makes synchronous user UI operations. 
	/// 
 
	public class LongProcess 
	{ 
		#region Members 
 
		// Main thread sets this event to stop worker thread: 
		ManualResetEvent m_EventStop; 
 
		// Worker thread sets this event when it is stopped: 
		ManualResetEvent m_EventStopped; 
 
		// Reference to main form used to make syncronous user interface calls: 
		MainForm m_form; 
 
		#endregion 
 
		#region Functions 
 
		public LongProcess(ManualResetEvent eventStop,  
			               ManualResetEvent eventStopped, 
			               MainForm form) 
		{ 
			m_EventStop = eventStop; 
			m_EventStopped = eventStopped; 
			m_form = form; 
		} 
 
		// Function runs in worker thread and emulates long process. 
		public void Run() 
		{ 
			int i; 
			String s; 
 
			for (i = 1; i <= 10; i++) 
			{ 
				// make step 
				s = "Ö´ÐеÚ" + i.ToString() + "²½"; 
 
				Thread.Sleep(400); 
 
				// Make synchronous call to main form. 
				// MainForm.AddString function runs in main thread. 
				// To make asynchronous call use BeginInvoke 
				m_form.Invoke(m_form.m_DelegateAddString, new Object[] {s}); 
 
 
				// check if thread is cancelled 
				if ( m_EventStop.WaitOne(0, true) ) 
				{ 
					// clean-up operations may be placed here 
					// ... 
 
					// inform main thread that this thread stopped 
					m_EventStopped.Set(); 
 
					return; 
				} 
			} 
 
			// Make asynchronous call to main form 
			// to inform it that thread finished 
			m_form.Invoke(m_form.m_DelegateThreadFinished, null); 
		} 
 
		#endregion 
	} 
}