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Editorial Team
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Asked: 2026-05-23T21:42:34+00:00

I am trying to draw a simple line in WP7 XAML such as the

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I am trying to draw a simple line in WP7 XAML such as the one below. With static coordinate values this works fine. 

<Line Stroke="White" 
      X1="1" Y1="1" 
      X2="200" Y2="1" />

What I need is to bind the coordinate values relative to other controls on the same Canvas based on a matching property value such as its Id or Name. Once the correct control is bound, I need to get its Left and/or Top Canvas locations. Using a vague pseudocode, here is what I would like to be able to do…

<Line Stroke="White" 
      X1="{Binding Canvas.Left, Source={Binding <a_control_where_a_property_equals_some_value>}}" Y1="1" 
      X2="200" Y2="1" />

I’ve tried a number of binding scenarios with no success. The extra complexity is that this is Windows Phone 7 (WP7) binding and not full blown XAML.

Note: All the controls are added at runtime so they are not statically defined.

Any Suggestions???

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1 Answer

  1. Editorial Team

    The best you can hope for is to use ElementName. Other than that, you’d need to expose a common property somewhere that both controls would be bound to. Possibly in a view-model, but it depends on your setup.

    Sample of ElementName:

    <Canvas>
    <Line x:Name="line1" Stroke="White" X1="1" Y1="1"  X2="200" Y2="1" />
    <Line Stroke="White" X1="{Binding ElementName=line1, Path=X1}" Y1="10"  X2="200" Y2="1" />
</Canvas>
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