How can I reference xaml Template from a Converter?

Question

I am currently stuck on a problem assigning different templates to a control via a converter.

So I have 2 templates.

        <ControlTemplate x:Name="_templateA" x:Key="templateA">
            <StackPanel Grid.Column="0" Margin="0,0,5,0">
                <Blah />
            </StackPanel>
        </ControlTemplate>

        <ControlTemplate x:Name="_templateB" x:Key="templateB">
            <StackPanel Grid.Column="0" Margin="0,0,5,0">
                <Blah Blah />
            </StackPanel>
        </ControlTemplate>

and I have this control using this converter:

<ControlA x:Name="_controlA" >
     <Control Template="{Binding Converter={StaticResource templateConverters}}" />
</ControlA>

My Converter:

public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        Object a;
        ControlTemplate template = null;

        try
        {
            a= value as ObjectA;
            if (value != null)
                template = a.useTemplate1 ? [templateA from xaml] : [templateB from xaml];
        }
        catch (Exception ex)
        {
            Debug.Assert(false, ex.ToString());
        }

        return toolbar;
    }

In my Converter, how am I able to get reference to my xaml file so that it allows me to assign it my desired template???

Thanks and Regards, Kev

Answer 1

Maybe you should think on some other implementation but here is what you're asking for:

your converter code:

public class MyConverter : IValueConverter
{
    public ControlTemplate TemplateA { get; set; }
    public ControlTemplate TemplateB { get; set; }

    ... Convert methods using TemplateA and TemplateB properties...
}

usage in XAML:

<UserControl.Resources>
    <!-- templates with 'templateA' and 'templateB' keys -->
    <Converters:MyConverter x:Key="templateConverters" TemplateA="{StaticResource templateA}" TemplateB="{StaticResource templateB}" />
<UserControl.Resources>

...

<ControlA x:Name="_controlA" >
    <Control Template="{Binding Converter={StaticResource templateConverters}}" />
</ControlA>