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Multibinding fails to change Button.width

Posted By:      Posted Date: December 04, 2010    Points: 0   Category :WPF

I have a button, and want to change it's width by binding it to some properties (for example to make it double size of it's parent canvas)

so in my xaml i declare button:

<Button Height="55" Name="button22" Content="123">
 <MultiBinding Converter="{StaticResource xamlWidthMC}">
  <Binding ElementName="canvas2" Path="Width" />
  <Binding ElementName="canvas2" Path="Width" />

 and declare it's IMultiValueConverter

<Window x:Class="WpfApplication1.MainWindow"

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