C# 清除事件绑定的函数

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  #region 清除事件绑定的函数
        /// 

        /// 清除事件绑定的函数
        /// 
        /// 拥有事件的实例
        /// 事件名称
        public static void ClearAllEvents(object objectHasEvents, string eventName)
        {
            if (objectHasEvents == null)
            {
                return;
            }
            try
            {
                EventInfo[] events = objectHasEvents.GetType().GetEvents(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
                if (events == null || events.Length < 1)
                {
                    return;
                }
                for (int i = 0; i < events.Length; i++)
                {
                    EventInfo ei = events[i];
                    if (ei.Name == eventName)
                    {
                        FieldInfo fi = ei.DeclaringType.GetField(eventName, BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance);
                        if (fi != null)
                        {
                            fi.SetValue(objectHasEvents, null);
                        }
                        break;
                    }
                }
            }
            catch
            {
            }
        }
        #endregion