Alternative to Triggers on WP8

Question

I\'ve read that Triggers are not supported in XAML for WP8. What\'s the alternative approach? I wanted to use a trigger to change the background image of a button w

Answer 1

Please try this. Windows phone triggers msdn

Here I binded the image data trigger with my Boolean property , when the Boolean property is changed it will trigger and the setter will fire. Make sure you properties are implemented with INofityPropertyChanged

 xmlns:ec="clr-namespace:Microsoft.Expression.Interactivity.Core;assembly=Microsoft.Expression.Interactions" x:Class="XXX_XXXX"
<Image Source="/Assets/Images/Tick.png"
                   Stretch="None"
                   HorizontalAlignment="Stretch" 
                   VerticalAlignment="Top">
                <interactivity:Interaction.Triggers>
                    <ec:DataTrigger Binding="{Binding IsTapped}" Value="True">
                        <ec:ChangePropertyAction PropertyName="Source">
                            <ec:ChangePropertyAction.Value>

                                <BitmapImage UriSource="/Assets/Images/Close.png"/>
                            </ec:ChangePropertyAction.Value>
                        </ec:ChangePropertyAction>
                    </ec:DataTrigger>
                </interactivity:Interaction.Triggers>
            </Image>

Answer 2

You could, potentially just attach an event handler for the "Tap" event for the image. Without code examples, I'm not too sure how much I can help; however, I've pasted some code below:

XAML

                <Image Source="/Assets/awesomeImg.png" Tap="AwesomeImg_Tap"/>

Code Behind (C#)

private void AwesomeImg_Tap(object sender, System.Windows.Input.GestureEventArgs e)
    {
      YourImageName.ImageSource = //code here to URI of image
    }

Hope this helps!