我有以下代码(wp7-silverlight)。我尝试将滑块绑定到这两个控件的Angle属性,但由于某种原因,内部控件似乎没有接收数据,只有父控件。当我把它们并排放置(而不是嵌套)时,它们正常工作。知道为什么只有外部控件可以从滑块获取数据吗?
<rotate:RotatableUserControl Width="400"
Height="400"
x:Name="RotatableUserControl"
Angle="{Binding ElementName=SliderObject, Path=Value}">
<Canvas Background="Red">
<rotate:RotatableUserControl Width="50"
Height="50"
x:Name="childeRotate3"
Angle="{Binding ElementName=SliderObject, Path=Value}">
<Grid Background="Yellow" />
</rotate:RotatableUserControl>
</Canvas>
</rotate:RotatableUserControl>
答案 0 :(得分:0)
我不确定为什么你不能嵌套绑定它,但你可以尝试将画布Datacontext设置为SliderObject并将Value绑定到嵌套的rotate:RotatableUserControl,这可能有效!
<rotate:RotatableUserControl Width="400"
Height="400"
x:Name="RotatableUserControl"
Angle="{Binding ElementName=SliderObject, Path=Value}">
<Canvas Background="Red" Datacontext={Binding ElementName=SliderObject, Path=Value}">
<rotate:RotatableUserControl Width="50"
Height="50"
x:Name="childeRotate3"
Angle="{Binding}">
<Grid Background="Yellow" />
</rotate:RotatableUserControl>
</Canvas>
</rotate:RotatableUserControl>