Changing DataTemplate based on Attribute in an XElement - wpf

Question

Ok I have an XElement that looks like:
<authentication mode="Forms">
<forms loginUrl="login.aspx" name=".LOGIN" protection="All" timeout="4800" path="/" />
</authentication>
Then in my XAML I setup a ContentControl that looks like:
<ContentControl Content="{Binding Data}">
<ContentControl.ContentTemplate>
<DataTemplate>
<DataTemplate.Triggers>
<DataTrigger Binding="{Binding Path=Attribute[mode].Value}" Value="Forms">
<Setter Property="ContentTemplate" Value="{StaticResource FormsTemplate}"/>
</DataTrigger>
</DataTemplate.Triggers>
</DataTemplate>
</ContentControl.ContentTemplate>
</ContentControl>
Where Data is my public property that contains the XElement. My template looks like:
<DataTemplate x:Key="FormsTemplate">
<StackPanel>
<StackPanel Orientation="Horizontal">
<TextBlock Text="Login URL"/>
<TextBox Text="{Binding Path=Element[forms].Attribute[loginUrl].Value}"/>
</StackPanel>
<StackPanel Orientation="Horizontal">
<TextBlock Text="Name"/>
<TextBox Text="{Binding Path=Attribute[name].Value}"/>
</StackPanel>
<StackPanel Orientation="Horizontal">
<TextBlock Text="Protection"/>
<TextBox Text="{Binding Path=Attribute[protection].Value}"/>
</StackPanel>
<StackPanel Orientation="Horizontal">
<TextBlock Text="Timeout"/>
<TextBox Text="{Binding Path=Attribute[timeout].Value}"/>
</StackPanel>
<StackPanel Orientation="Horizontal">
<TextBlock Text="Path"/>
<TextBox Text="{Binding Path=Attribute[path].Value}"/>
</StackPanel>
</StackPanel>
</DataTemplate>
<DataTemplate DataType="passport">
<StackPanel>
<StackPanel Orientation="Horizontal">
<TextBlock Text="Redirect URL"/>
<TextBox Text="{Binding Path=Attribute[redirectUrl].Value}"/>
</StackPanel>
</StackPanel>
</DataTemplate>
Why doesn't this work? Nothing shows up on the screen when I do this.

Answer 1

I solved it by using a Style Trigger instead. Below is what I had to use for this to work.
<ContentControl.Style>
<Style TargetType="{x:Type ContentControl}">
<Style.Triggers>
<DataTrigger Binding="{Binding Path=Data.Attribute[mode].Value}" Value="Forms">
<Setter Property="ContentTemplate" Value="{StaticResource FormsTemplate}"/>
</DataTrigger>
<DataTrigger Binding="{Binding Path=Data.Attribute[mode].Value}" Value="Passport">
<Setter Property="ContentTemplate" Value="{StaticResource PassportTemplate}"/>
</DataTrigger>
</Style.Triggers>
</Style>
</ContentControl.Style>