Bindings in two diferent Datatemplates for the same control

Question

Hi,

I'm doing a generic controller, right now is one button from telerik with two direferents datatemplates. Each dataTemplate has an specific key to id and in code-behind i change between them.

My problem is i cannot do the binding to my properties. For example:

My Xaml looks like:

    <telerik:RadButton x:Class="Itim.Framework.Silverlight.UI.Controls.Button"
                   xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                   xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                   xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
                   xmlns:local="clr-namespace:Itim.Framework.Silverlight.UI.Controls"
                   SizeChanged="btnGeneric_SizeChanged">
    <telerik:RadButton.Resources>

        <!--Default dataTemplate-->
        <DataTemplate x:Key="Standard">
            <StackPanel DataContext="{Binding}" Orientation="Horizontal">
                <Image Source="{Binding ImageSource}" Visibility="{Binding ImageVisibility}" 
                       Stretch="Fill" VerticalAlignment="Stretch" HorizontalAlignment="Right" />
                <TextBlock Text="{Binding Content, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}"
                           TextAlignment="Center" Visibility="{Binding TextVisibility,Mode=TwoWay}" Width="{Binding TextBlockWidth}" />
            </StackPanel>
        </DataTemplate>

        <!--Ok button data template-->
        <DataTemplate x:Key="Ok">
            <StackPanel DataContext="{Binding}" Orientation="Horizontal" >
                <Image Source="{Binding ImageOkSource}" Visibility="{Binding ImageVisibility}" 
                       Stretch="Fill" VerticalAlignment="Stretch"/>
                <TextBlock Text="{Binding DefaultOkText}" Visibility="{Binding TextVisibility,Mode=TwoWay}" 
                           TextAlignment="Center" Width="{Binding TextBlockWidth}"/>
            </StackPanel>
        </DataTemplate>

    </telerik:RadButton.Resources>
</telerik:RadButton>

and in c# when i wanna change the datatemplate i do something like this:

this.ContentTemplate = this.Resources["Standard"] as DataTemplate;

My button class will inherit from the teleriks RadButton, and every property is defined there (like ImageSource or DefaultOkText).

But when i use this controler with for example the Standard datatemplate the image (from ImageSource) doesn't show, but the Text from the textblock shows. the same happens when i chage for the OK datatemplate (in this case will not put anything because the binding of ImageOkSource or DefaultOkText will not do).

What can i do to get this working?

Thanks