C#中删除控件的事件的方法

需要事先引用

 

 

   using System.ComponentModel;
   

   using System.Reflection;       
   
 
   ///
    
   <summary>
   
        
   ///
    删除指定控件的指定事件
        
   ///
    
   </summary>
   
        
   ///
    
   <param name="control"></param>
   
        
   ///
    
   <param name="eventname"></param>
   
        
   public 
   void ClearEvent(System.Windows.Forms.Control control, 
   string eventname)
   
        {
   
            
   if (control == 
   null) 
   return;
   
            
   if (
   string.IsNullOrEmpty(eventname)) 
   return;
   

   
            BindingFlags mPropertyFlags = BindingFlags.Instance | BindingFlags.Public | BindingFlags.Static | BindingFlags.NonPublic;
   
            BindingFlags mFieldFlags = BindingFlags.Static | BindingFlags.NonPublic;
   
            Type controlType = 
   typeof(System.Windows.Forms.Control);
   
            PropertyInfo propertyInfo = controlType.GetProperty(
   "
   Events
   ", mPropertyFlags);
   
            EventHandlerList eventHandlerList = (EventHandlerList)propertyInfo.GetValue(control, 
   null);
   
            FieldInfo fieldInfo = (
   typeof(System.Windows.Forms.Control)).GetField(
   "
   Event
   " + eventname, mFieldFlags);
   
            Delegate d = eventHandlerList[fieldInfo.GetValue(control)];
   

   
            
   if (d == 
   null) 
   return;
   
            EventInfo eventInfo = controlType.GetEvent(eventname);
   

   
            
   foreach (Delegate dx 
   in d.GetInvocationList())
   
                eventInfo.RemoveEventHandler(control, dx);
   

   
        }