R – Silverlight 3 ValidatesOnException not found

At first sight it appears to be the correct way to fix the problem and it does appear to be "another random and arbitrary difference" between WPF and Silverlight. However, making that change doesn't actually produce code that works.

As Klay correctly points out in his latest edit, what he actually needs to do is produce a UserControl with the Dependency Properties for the variable parts (Text etc.).

Here's the ResourceDictonary page on MSDN which has more information on the format.

Don't forget the Silverlight is not really a sub-set of WPF. Microsoft had to completely rewrite the code that runs Silverlight apps so that the runtime is a small download.

EDIT

The XAML you need is:

<ResourceDictionary
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="clr-namespace:MyControls">
    >
    <Style TargetType="StackPanel">
        <Setter Property="Template">
            <Setter.Value>
                <Control Template TargetType="local:myPanel">
                    <CheckBox x:Name="myCheckBox"
                              Content="{TemplateBinding CheckBoxLabel}"
                              Margin="8,0,2,0" Width = "100"/>
                </Control>
            </Setter.Value>
         </Setter>    
    </Style>
</ResourceDictionary>

Then you'll need to create a cs file containing the code for your user control:

namespace MyControls
{
    public class myPanel : ContentControl
    {
        public myPanel()
        {
            DefaultStyleKey = typeof(myPanel);
        }
    }

    public override void OnApplyTemplate()
    {
        base.OnApplyTemplate();

        CheckBox checkbox = GetTemplateChild("myCheckBox") as CheckBox;
        checkbox.Click += CheckBoxClick;
    }

    void CheckBoxClick(object sender, RoutedEventArgs e)
    {
        CheckBox checkbox = sender as CheckBox;
        // Do this CheckBox specific stuff
    }

    public string CheckBoxLabel
    {
        get { return (string)GetValue(CheckBoxLabelProperty); }
        set { SetValue(CheckBoxLabelProperty, value); }
    }

    public static readonly DependencyProperty CheckBoxLabelProperty =
        DependencyProperty.Register("CheckBoxLabel", typeof(string),
                                    typeof(myPanel), null);
 }

Disclaimer - I've just put this together from a more complex user control so there's no guarantee that it'll work "out of the box". You'll probably need to tweak it a bit to get it working 100%.

You cannot bind the converter parameter, because it is not a dependency property of the binding object.

Instead you can pass the whole data item to the converter and use its VehicleSpeed and InMiles properties in the Convert() method.