I overlooked you are doing ElementBinding.
It seems it does not work in IronPython - the Slider (element you are
binding to) probably does not fire PropertyChanged event. I would blame
some magic with codebehind files :-)
In this case, the slider is updated when the text box changes its value:
<Slider x:Name="sliderFontSize" Margin="3" Minimum="1" Maximum="40"
Value="8" />
<TextBox x:Name="textboxFontSize" Text="{Binding
ElementName=sliderFontSize, Path=Value, Mode=TwoWay}"/>
In this case, the text box is updated when the slider changes its value:
<Slider x:Name="sliderFontSize" Margin="3" Minimum="1" Maximum="40"
Value="{Binding ElementName=textboxFontSize, Path=Text, Mode=TwoWay}" />
<TextBox x:Name="textboxFontSize" Text="5"/>
Finally this works but it not much usable:
<Slider x:Name="sliderFontSize" Margin="3" Minimum="1" Maximum="40"
Value="{Binding ElementName=textboxFontSize, Path=Text, Mode=TwoWay}" />
<TextBox x:Name="textboxFontSize" Text="{Binding
ElementName=sliderFontSize, Path=Value, Mode=TwoWay}"/>
--
-- Lukáš
Shyam Gopale wrote:
But, I am just doing binding between elements. Is this still required.
If you see my XAML I am just binding the value of a slider to the
fontsize of a textblock. I am not sure if the Ironpython code hits
that path.
Thanks,
Shyam
On Wed, Dec 30, 2009 at 10:02 PM, Lukas Cenovsky <[email protected]
<mailto:[email protected]>> wrote:
Shyam Gopale wrote:
Hi,
I am trying out some sample Silverlight code with IronPython
and I found that the data binding does not work properly.
The app.xaml is as below:
<UserControl x:Class="System.Windows.Controls.UserControl"
xmlns="http://schemas.microsoft.com/client/2007";
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml";>
<Grid x:Name="layout_root" Background="White">
<StackPanel>
<Slider x:Name="sliderFontSize" Margin="3" Minimum="1"
Maximum="40" Value="10" />
<TextBlock x:Name="lblMessage" Text="Hello World" Margin="5"
FontSize="{Binding ElementName=sliderFontSize,
Path=Value,Mode=TwoWay}"></TextBlock>
<Button x:Name="cmdClickMe" Content="Click Me!"
Margin="5"></Button>
</StackPanel>
</Grid>
</UserControl>
This XAML when used in a C# Silverlight app reflects the
correct data binding behaviour but does not work when used
with IronPython and Chiron. Mainly the font size of the text
block is not updated.
Does anyone have any idea about this?
Check my blog about binding in Silverlight:
http://gui-at.blogspot.com/2009/11/inotifypropertychanged-and-databinding.html
--
-- Lukáš
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