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    <p>You are binding to the <code>DataContext</code> of the <code>Image</code> and not to the templated <code>Button</code></p> <p>Bind to the <code>TemplatedParent</code> instead.</p> <p>On a side note, there is no need to use two <code>DataTriggers</code> for true and false. Do this instead</p> <pre><code>&lt;Button x:Name="ButtonVisible" Tag="1"&gt; </code></pre> <p>And only keep one of the <code>DataTriggers</code></p> <pre><code>&lt;DataTrigger Binding="{Binding Path=IsVisible}" Value="False"&gt; &lt;Setter Property="Tag" TargetName="ButtonVisible" Value="0" /&gt; &lt;/DataTrigger&gt; </code></pre> <hr> <p><strong>Example</strong>, add the following to <code>MainWindow.xaml</code></p> <pre><code>&lt;StackPanel&gt; &lt;StackPanel.Resources&gt; &lt;DataTemplate x:Key="SomeDataTemplateofSomeType"&gt; &lt;Button x:Name="ButtonVisible"&gt; &lt;Button.Template&gt; &lt;ControlTemplate TargetType="Button"&gt; &lt;Image x:Name="FxImage"&gt; &lt;Image.Style&gt; &lt;Style TargetType="{x:Type Image}"&gt; &lt;Style.Triggers&gt; &lt;DataTrigger Binding="{Binding Tag, RelativeSource={RelativeSource TemplatedParent},UpdateSourceTrigger=PropertyChanged}" Value="0"&gt; &lt;Setter Property="Source" Value="YourImageSource" /&gt; &lt;/DataTrigger&gt; &lt;/Style.Triggers&gt; &lt;/Style&gt; &lt;/Image.Style&gt; &lt;/Image&gt; &lt;/ControlTemplate&gt; &lt;/Button.Template&gt; &lt;/Button&gt; &lt;DataTemplate.Triggers&gt; &lt;DataTrigger Binding="{Binding Path=IsVisible}" Value="True"&gt; &lt;Setter Property="Tag" TargetName="ButtonVisible" Value="1" /&gt; &lt;/DataTrigger&gt; &lt;DataTrigger Binding="{Binding Path=IsVisible}" Value="False"&gt; &lt;Setter Property="Tag" TargetName="ButtonVisible" Value="0" /&gt; &lt;/DataTrigger&gt; &lt;/DataTemplate.Triggers&gt; &lt;/DataTemplate&gt; &lt;/StackPanel.Resources&gt; &lt;ContentControl Content="{Binding MySource}" ContentTemplate="{StaticResource SomeDataTemplateofSomeType}"/&gt; &lt;ToggleButton IsChecked="{Binding Path=MySource.IsVisible, Mode=TwoWay}" Content="IsChecked?"/&gt; &lt;/StackPanel&gt; </code></pre> <p><strong>MainWindow.xaml.cs</strong></p> <pre><code>public partial class MainWindow : Window { public MainWindow() { InitializeComponent(); MySource = new MySource(); this.DataContext = this; } public MySource MySource { get; set; } } public class MySource : INotifyPropertyChanged { private bool m_isVisible; public bool IsVisible { get { return m_isVisible; } set { m_isVisible = value; OnPropertyChanged("IsVisible"); } } public event PropertyChangedEventHandler PropertyChanged; private void OnPropertyChanged(string propertyName) { if (PropertyChanged != null) { PropertyChanged(this, new PropertyChangedEventArgs(propertyName)); } } } </code></pre>
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    1. POSetting the tag property of a button to an integer value and firing a trigger
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    1. USFredrik Hedblad
    1. USFredrik Hedblad
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    1. POSetting the tag property of a button to an integer value and firing a trigger
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    1. COSorry i missed this code from my copy-paste. My code is like that already, i will edit the first post to avoid any misconceptions. Still it doesn't work though like this, so do you know how i can do it? :(
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    2. CO@muku: Well, I copied your code into a test project of my own and it worked so something else must be the problem. I'll check your update
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    3. COAre you sure? Because as I told you if my setter sets the value to {x:Null} the trigger is fired correctly. If I change the setter value to 0 or 1 the trigger isn't fired. And also inside the setter i set another value, a textblock text to know that the setter is fired at first place and it is fired...
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