<Core:InvokeCommandAction
Command="{Binding NavigateToURICommand}"
CommandParameter="{Binding ElementName=EcoQuerySkypeQuery, Path=QueryText, Converter={StaticResource URIConverter},
ConverterParameter=skype\:\{0\}\?call }" />
</Core:EventTriggerBehavior>
</TextBox>
<!-- Create a TextBlock where we display the result of the compiled expression -->
<TextBlock Text="{Binding ElementName=SkypeQueryCodeQuery, Path=Text, Converter={StaticResource CodeConverter}}" />
</StackPanel>
</Grid>