Canvas binding in silverlight - wpf

Question

I'm trying to create a canvas, with items located at specefied locations on the canvast, as i can not bind an source and a template directly to a Canvas, have i used a ItemsControl.
But there are a problem all the items are located at 0,0. And i have tested the Bindings they do not return 0,0.
How can i make this work so the items are located at the right place?
Also is it poissible to create 2 layers on the canvas, where each layer is binded to a diffrent source, and uses a diffrent template?
This is in Silverlight
<ItemsControl Grid.Row="1" Grid.Column="1"
Width="650" Height="650"
ItemsSource="{Binding Skills}">
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<Canvas Margin="0"
Width="650" Height="650" />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<ItemsControl.ItemTemplate>
<DataTemplate>
<StackPanel Canvas.Top="{Binding Top}" Canvas.Left="{Binding Left}">
<TextBlock Text="{Binding Name}" />
<Image Source="{Binding Icon}" />
<StackPanel Orientation="Horizontal" >
<TextBlock FontWeight="Bold" TextAlignment="Center" Text="{Binding SkillPointsStatusText}" />
</StackPanel>
</StackPanel>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
Test with ItemContainerStyle
<ItemsControl Grid.Row="1" Grid.Column="1"
Width="650" Height="650"
ItemsSource="{Binding Skills}">
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<Canvas Margin="0"
Width="650" Height="650" />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<ItemsControl.ItemTemplate>
<DataTemplate>
<StackPanel>
<TextBlock Text="{Binding Name}" />
<Image Source="{Binding Icon}" />
<TextBlock FontWeight="Bold" TextAlignment="Center" Text="{Binding SkillPointsStatusText}" />
</StackPanel>
</DataTemplate>
</ItemsControl.ItemTemplate>
<ItemsControl.ItemContainerStyle>
<Style>
<Setter Property="Canvas.Top" Value="{Binding Top}" />
<Setter Property="Canvas.Left" Value="{Binding Left}" />
</Style>
</ItemsControl.ItemContainerStyle>
</ItemsControl>
Well i have droped the project, but i will leave the question open should one have an anwser

Answer 1

All of the following does not work in SL4 since it depends on bindings in a Setter.Value.
Try setting the binding in the ItemContainerStyle since your StackPanel is not the root element; your template will be placed in a ContentPresenter, so your attached properties for canvas positioning in the StackPanel will be ignored.
<ItemsControl.ItemContainerStyle>
<Style>
<Setter Property="Canvas.Top" Value="{Binding Top}" />
<Setter Property="Canvas.Left" Value="{Binding Left}" />
</Style>
</ItemsControl.ItemContainerStyle>
Edit: If Silverlight does not support ItemContainerStyle you can set the universal style for ContentPresenters which should work just as well:
<ItemsControl ItemsSource="{Binding Data}">
<ItemsControl.Resources>
<Style TargetType="ContentPresenter">
<Setter Property="Canvas.Left" Value="{Binding Left}"/>
<Setter Property="Canvas.Top" Value="{Binding Top}"/>
</Style>
</ItemsControl.Resources>
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<Canvas/>
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<ItemsControl.ItemTemplate>
<DataTemplate>
...
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>