如何更改XAML定义资源的价值？ [英] How to change value of a defined resource in xaml?

问题描述

我在XAML中的网格，它使用弹出附着其资源：

I have a grid in the xaml which uses a resource for its attached flyout:

<Grid >
    <FlyoutBase.AttachedFlyout>
        <StaticResource ResourceKey="GridFlyout"/>
    </FlyoutBase.AttachedFlyout>

    .. other stuffs

</Grid>

和我在页面定义的资源：

and I have a defined resource in the page:

<Page.Resources>
    <MenuFlyout x:Key="GridFlyout">
        <MenuFlyoutItem Text="delete"/>
        <MenuFlyoutItem Text="like"/>
        <MenuFlyoutItem Text="edit"/>
    </MenuFlyout>

在某些情况下我想设置为上述网格下面的资源，但b
$ b

But in some conditions I want to set the following resource for the above grid:

<Page.Resources>
    <MenuFlyout x:Key="SecondaryGridFlyout">
        <MenuFlyoutItem Text="like"/>
    </MenuFlyout>

我怎样才能做到这一点？谢谢

How can I do that? thanks

推荐答案

这是最简单的（和完全支持），如果你只是这样做的代码。使用附加属性 AttachedFlyout ：

It's easiest (and fully supported) if you just do this in code. Using the attached property AttachedFlyout:

FlyoutBase.SetAttachedFlyout(theGrid, 
       (MenuFlyout) App.Current.Resources["SecondaryGridFlyout"]);

theGrid 中的例子代表了电网要改变。

theGrid in the example above represents the Grid you want to change.

<Grid x:Name="theGrid">
    <FlyoutBase.AttachedFlyout>
        <StaticResource ResourceKey="GridFlyout"/>
    </FlyoutBase.AttachedFlyout>
    <!-- ... other stuff -->
</Grid>

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