異步調用一個方法

Question

這裏是我的舊代碼來調用一個函數ASYN：

public class Caller { 

    public void Calculate(CalcParameters calcParameters, string sourceApp) { 
     AsyncCaller caller = new AsyncCaller(_username, _password, new Token()); 
     caller.Calculated += new CalculatedHandler(OnCalculated); 
     caller.calculate(sourceApp, calcParameters); 
    } 

    protected virtual void OnCalculated(object sender, CalculatedEventArgs e) { 
     if (OnCalculatedEvent != null) OnCalculatedEvent(e); 
    } 

    public void calculate(string calcID, WebService.CalcParameters calcParams) { 
     calculate(0, calcID, calcParams); 
    } 

    public void calculate(long callID, string calcID, WebService.CalcParameters calcParams) { 
     try { 
      lock(this) { 
       Worker wsWorker = MakeCalculateWorker(callID, calcID, new OnCalculatedHandler(OnCalculated), calcParams); 
       Thread wsThread = new Thread(new ThreadStart(wsWorker.calculate)); 
       wsThread.IsBackground = true; 
       wsThread.Start(); 
      } 
     } catch (Exception ex) { 
      _log.WriteError(
      Assembly.GetExecutingAssembly().GetName().Name, 
      this.GetType().Name, 
      MethodBase.GetCurrentMethod().Name, 
      _username, 
      ex.Message); 
      throw ex; 
     } 
    } 
} 

但現在我需要做到這一點使用委託和的BeginInvoke ..

請有人可以幫我這個或給我一些樣品閱讀。

感謝

Answer 1

這裏是一個MSDN例子說明如何使用異步委託。

通讀它，但也通過它一步一步，如果你是程序來理解它。

Asynchronous Delegates Programming Sample