C#

public event ReportConversion ReportConversionDone;        
...
private void RutinKonversi(object  fListobj)
{
   ...
   OnStatusReport(pd); //raising event
}
protected void OnStatusReport(ProggressDoneEventArgs e)
{
   if (ReportConversionDone != null) 
   {
      ReportConversionDone(this, e);
   }
}

void conv_ReportConversionDone(object sender, ProggressDoneEventArgs e)
{            
   //marshal to UI thread
   if (sender == conv)
   {        
        context.Post(new SendOrPostCallback(delegate(object gakPenting)
           {//inline code or anonymous method
            #region code event handler cross thread
              switch (e.ItemToReport)
              {
                  ...
              }
            #endregion
            }), null);
    }    
}