web event

 1  
 2 //其实其实一个辅助的变量，用来做Hashtable中的”键“
 3 private static object ValidateCreditCardFormKey = new object();
 4         public event ValidateCreditCardFormEventHandler ValidateCreditCardForm
 5         {
 6             add
 7             {
 8                 Events.AddHandler(ValidateCreditCardFormKey, value);
 9             }
             remove
             {
                 Events.RemoveHandler(ValidateCreditCardFormKey, value);
             }
         }
 
        
         protected void OnValidateCreditCardForm(ValidateCreditCardFormEventArgs args)
         {
             ValidateCreditCardFormEventHandler handler = Events[ValidateCreditCardFormKey]
                                                                         as ValidateCreditCardFormEventHandler;
             if (handler != null)
                 handler(this, args);
         }