WPF元素主机内存泄漏 [英] WPF element host memory leak

问题描述

我在使用的Windows窗体元素主机一个奇怪的内存泄漏。 我有一个主要形式，这将打开另一种形式，一个只有富人就可以了ElementHost控件（其中，在这一点上，没有一个WPF控件的孩子）。 只有1主机的形式可以打开。 每次我打开窗体，应用程序内存20MB的，这是不是免费的窗体时关闭引发，因此，打开主机形式几次后，我耗尽内存！ 现在，如果我删除从表单元素主机，内存保持稳定。

I'm having a strange memory leak using element host on windows forms. I have a main form, which opens another form, the one that only haves the elementhost control on it (which, at this point, does not have a wpf control child). Only 1 host form can be opened. Every time I open the form, the application memory raises by 20Mb, which are not free when the form is closes, so, after opening the host form several times, I run out of memory!. Now, if I remove the element host from the form, the memory remains stable.

我已经运行CLRProfiler和蚂蚁，但我发现，所有的问题所在的单元主机上，而我还没有找到任何解决此。

I have been running CLRProfiler and ANTS, but I have found that all the problem resides on the element host, and I haven't found any workaround for this.

该wpfHost使用了即装即用，从工具栏在WinForm只是拖动。

The wpfHost is used out-of-the-box, just dragged from the toolbar to the winForm.

任何想法，我怎么能解决这个问题？

Any idea how can I solve this?

推荐答案

如果该链接将再次突破，这里是解决方案（复制粘贴）

if the link will break again, here is solution (copy-pasted)

发布者的千戈瑞的上22.10.2010在6:12 可能的解决方法： 将下面的code到处置或你的控制/表格包含ElementHost控件另一种释放方式。

Posted by KGy on 22.10.2010 at 6:12 A possible workaround: Put the following code into the Dispose or another release method of your control/form that contains the ElementHost control.

if (elementHost != null)
{
    FrameworkElement fe = elementHost.Child as FrameworkElement;
    if (fe != null)
    {
        // Memory leak workaround: elementHost.Child.SizeChanged -= elementHost.childFrameworkElement_SizeChanged;
        SizeChangedEventHandler handler = (SizeChangedEventHandler)Delegate.CreateDelegate(typeof(SizeChangedEventHandler), elementHost, "childFrameworkElement_SizeChanged");
        fe.SizeChanged -= handler;
    }
    elementHost.Child = null;
    base.Dispose(disposing);
    elementHost.Dispose();
    elementHost.Parent = null;
    elementHost = null;
}

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