Question

当GoBack我在

中调用函数Dispose（）时

 private void Dispose()
    {


        ImageBrush brushRoot = LayoutRoot.Background as ImageBrush;
        if (brushRoot != null)
        {
            ((BitmapImage)brushRoot.ImageSource).UriSource = null;
            brushRoot.ImageSource = null;
            LayoutRoot.Background = null;
        }

        gridHeader_hotNews.Children.Clear();
        gridHeader_hotNews = null;

        if (grid_Two.Background as ImageBrush != null)
        {
            ((BitmapImage)(grid_Two.Background as ImageBrush).ImageSource).UriSource = null;
            (grid_Two.Background as ImageBrush).ImageSource = null;
            grid_Two.Background = null;
        }
        if (btn_Two.Background as ImageBrush != null)
        {
            ((BitmapImage)(btn_Two.Background as ImageBrush).ImageSource).UriSource = null;
            (btn_Two.Background as ImageBrush).ImageSource = null;
            btn_Two.Click -= new RoutedEventHandler(btn_Two_Click);
            btn_Two.Background = null;
        }
        btn_Two = null;
        grid_Two.Children.Clear();
        grid_Two = null;

        grid_Content.Children.Clear();
        grid_Content = null;

        if (grid_footer.Background as ImageBrush != null)
        {
            ((BitmapImage)(grid_footer.Background as ImageBrush).ImageSource).UriSource = null;
            (grid_footer.Background as ImageBrush).ImageSource = null;
            grid_footer.Background = null;
        }
        if (btnspeaker.Background as ImageBrush != null)
        {
            ((BitmapImage)(btnspeaker.Background as ImageBrush).ImageSource).UriSource = null;
            (btnspeaker.Background as ImageBrush).ImageSource = null;
            btnspeaker.Background = null;
        }
        btnspeaker = null;

        grid_footer.Children.Clear();
        grid_footer = null;
        LayoutRoot.Children.Clear();
        LayoutRoot = null;
        GC.SuppressFinalize(this);
        GC.WaitForPendingFinalizers();
    }

但仍然使用3到5 MB。当我调用GoBack事件时，如何恢复原始内存？

请帮助我，我希望在返回I Page或我处理对象时释放内存。

Answer 1

垃圾收集器仅在需要运行时运行，因此一旦运行Dispose，它就不会一直运行。

您可以通过调用GC.Collect（）强制收集GC。但这可能会对您的应用程序性能产生影响。这是因为当GC运行时，它会停止应用程序中的所有正在执行的线程，并检查堆中的每个对象以查看它是否仍被引用或正在使用中。虽然垃圾收集器速度很快，但重复调用GC会产生开销。

正如其他人评论所说的那样，让GC管理自己是最好的。

按GoBack时内存不会下降

1 个答案: