小编jul*_*n29的帖子

这两个实现之间有区别吗？

1:

public class SMSManager : ManagerBase
{
    private EventHandler<SheetButtonClickEventArgs> _buttonClickevent; 

    public SMSManager(DataBlock smsDataBlock, DataBlock telephonesDataBlock) :
        base(smsDataBlock)
    {
        _buttonClickevent = new EventHandler<SheetButtonClickEventArgs>(OnButtonClick);
        SheetEvents.ButtonClick += _buttonClickevent;

    }

    public override void Dispose()
    {
        base.Dispose();
        if (_buttonClickevent != null)
        SheetEvents.ButtonClick -= _buttonClickevent;
    }
}

2:

public class SMSManager : ManagerBase
{
    public SMSManager(DataBlock smsDataBlock, DataBlock telephonesDataBlock) :
        base(smsDataBlock)
    {
        SheetEvents.ButtonClick += new EventHandler<SheetButtonClickEventArgs>(OnButtonClick);   
    }

    public override void Dispose()
    {
        base.Dispose();
        SheetEvents.ButtonClick -= new EventHandler<SheetButtonClickEventArgs>(OnButtonClick);
    }
}

关于内存泄漏,第一个似乎比第二个更正确.但它真的是对的吗？