How can apply the templateBinding on image button in silverlight - windows-phone-7

Question

I am new on using Sliverlight. Hope someone can help me. I need the image buttons to show the order is on the complete or process status. The click event functions of these two are same to navigate the same page. Currently I created two customer Image Button on App.xaml because the Source of this image cannot do “TemplateBinding” ; the button doesn’t has this property. Is it a better way to do it? If so, would you provide the code or link, so I can learn from it? Thanks.
There is my code:
<Style x:Key="btnComplete" TargetType="Button" >
<Setter Property="Template">
<Setter.Value>
<ControlTemplate>
<StackPanel>
<Image Height="50" Width="120" Stretch="none" Source="../images/btnComplete.png"/>
</StackPanel>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>

Answer 1

The simplest way to achive this is to create a transparent controltemplate for the button and add image as content to the button anywhere you want.
The button code in your page will be like below.
<Button Height="100" Width="100" Style="{StaticResource TransparentButtonStyle}" Click="TwitterBtn_Click">
<Image Height="100" Source="YourIcon.png" Width="100"/>
</Button>
And the TransparentButtonStyle can be declared in App.xaml . Thats all!
<Style x:Key="TransparentButtonStyle" TargetType="Button">
<Setter Property="Background" Value="Transparent" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="Button">
<ContentControl x:Name="ContentContainer" ContentTemplate="{TemplateBinding ContentTemplate}" Content="{TemplateBinding Content}"
Foreground="{TemplateBinding Foreground}" HorizontalContentAlignment="Stretch" VerticalContentAlignment="Stretch" />
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>

Answer 2

Here's an implementation of ImageButton for wp7. I've used this example and modified it for various things:
http://silvergeek.net/2011/01/14/imagebutton-control-for-win-phone-7/
Also you can check out the Codeing4Fun controls & source, specifically the buttons.
http://coding4fun.codeplex.com/
update: Telerik has an ImageButton control for wp7 now as well.