用代码方式删
FieldInfo _fl = typeof(Control).GetField(eventName, BindingFlags.Static | BindingFlags.NonPublic);
if (_fl != null)
{
object _obj = _fl.GetValue(control);
PropertyInfo _pi = control.GetType().GetProperty("Events", BindingFlags.NonPublic | BindingFlags.Instance);
EventHandlerList _eventlist = (EventHandlerList)_pi.GetValue(control, null);
if (_obj != null && _eventlist != null)
_eventlist.RemoveHandler(_obj, _eventlist[_obj]);
}
网上找的这个方法只能删公共的事件，datagridview独有的事件就不行
FieldInfo _fl = typeof(DatagridView).GetField(eventName, BindingFlags.Static | BindingFlags.NonPublic);也测试过了不行