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We have many complex Paths in our WPF application. An example would be: 

<Path Data="M14.077,9.772C11.634,9.772 9.652,11.753 9.652,14.197 9.652,16.641 11.634,18.622 14.077,18.622 16.521,18.622 18.502,16.641 18.502,14.197 18.502,11.753 16.521,9.772 14.077,9.772 M28,12L28,16 24.085,16C23.84,17.369,23.325,18.643,22.592,19.763L25.313,22.485 22.485,25.314 19.791,22.62C18.668,23.383,17.383,23.924,16,24.189L16,28 12,28 12,24.163C10.638,23.88,9.378,23.322,8.274,22.554L5.514,25.314 2.686,22.485 5.504,19.668C4.802,18.57,4.306,17.331,4.068,16L0,16 0,12 4.144,12C4.427,10.722,4.943,9.533,5.656,8.485L2.686,5.515 5.514,2.686 8.513,5.684C9.558,5,10.734,4.499,12,4.236L12,0 16,0 16,4.21C17.285,4.456,18.48,4.946,19.545,5.626L22.485,2.686 25.313,5.515 22.431,8.397C23.176,9.467,23.718,10.685,24.008,12z" Fill="{TemplateBinding Foreground}" Height="12" Width="12" Stretch="Fill" VerticalAlignment="Center" HorizontalAlignment="Right"/>

Most of our Control Templates require extensive use of vector graphics and multiple effect are applied on these paths.

For performance reasons, we want to freeze the Data of these paths since it won't be changed. This syntax we're using creates a StreamGeometry and assigns data to it. StreamGeometry is freezable but how can we freeze it in our xaml?

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1 回答 1

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您可以使用该PresentationOptions:Freeze="True"属性。你可以在这里阅读更多关于它的信息。

来自 MSDN 的总结：

将包含 Freezable 元素的 IsFrozen 状态设置为 true。未指定 PresentationOptions:Freeze 属性的 Freezable 的默认行为是 IsFrozen 在加载时为假，并且取决于运行时的一般 Freezable 行为。

设置为 true 与调用Freezable 对象IsFrozen完全相同。Freeze()

在您的情况下，您需要将 PathGeometry 设置为冻结。

<Path>
    <Path.Data>
        <PathGeometry PresentationOptions:Freeze="True"
            Figures="..." />
    </Path.Data>
</Path>
于 2014-12-24T22:58:57.103 回答