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POAttach ICommand in WPF UserControl
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  1. POAttach ICommand in WPF UserControl
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    copied!<p>I implemented a simple button with an image in it:</p> <p></p> <pre><code> &lt;Button Command="{Binding ButtonCommand, ElementName=ImageButtonControl}"&gt; &lt;StackPanel Orientation="Horizontal"&gt; &lt;Image Source="{Binding ButtonImage, ElementName=ImageButtonControl}"/&gt; &lt;TextBlock Text="{Binding ButtonText, ElementName=ImageButtonControl}" Margin="2,0,0,0"/&gt; &lt;/StackPanel&gt; &lt;/Button&gt; </code></pre> <p></p> <p>As you can see, I expose a ButtonCommand property in order to be able to attach an ICommand to this UserControl:</p> <pre><code>public partial class ImageButton : UserControl { /// &lt;summary&gt; /// The dependency property that gets or sets the source of the image to render. /// &lt;/summary&gt; public static DependencyProperty ImageSourceProperty = DependencyProperty.Register("ButtonImage", typeof(ImageSource), typeof(ImageButton)); public static DependencyProperty TextProperty = DependencyProperty.Register("ButtonText", typeof(string), typeof(ImageButton)); public static DependencyProperty ButtonCommandProperty = DependencyProperty.Register("ButtonCommand", typeof(ICommand), typeof(ImageButton)); public ImageButton() { this.DataContext = this; InitializeComponent(); } /// &lt;summary&gt; /// Gets or sets the button command. /// &lt;/summary&gt; public ICommand ButtonCommand { get { return (ICommand)GetValue(ImageButton.ButtonCommandProperty); } set { SetValue(ImageButton.ButtonCommandProperty, value); } } /// &lt;summary&gt; /// Gets or sets the button image. /// &lt;/summary&gt; public ImageSource ButtonImage { get { return (ImageSource)GetValue(ImageButton.ImageSourceProperty); } set { SetValue(ImageButton.ImageSourceProperty, value); } } /// &lt;summary&gt; /// Gets or sets the button text. /// &lt;/summary&gt; public string ButtonText { get { return (string)GetValue(ImageButton.TextProperty); } set { SetValue(ImageButton.TextProperty, value); } } } </code></pre> <p>Then when I declare my button it gives this:</p> <p><code>&lt;uc:ImageButton Grid.Row="1" Grid.Column="0" ButtonCommand="{Binding AttachContextCommand}" ButtonImage="{StaticResource AssociateImage}" ButtonText="Associer"/&gt;</code></p> <p>And badaboom, nothing never happen when I click on my ImageButton. When I replace the ImageButton with a simple button, the ICommand is called.</p> <p>I even tried to simply extends the Button class and bind an ICommand, but once again, it didn't work...</p> <p>Help appreciated !</p> <p>Thx.</p>
 

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