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POSetting XAML property value into user control from a consumer view
 

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  1. POSetting XAML property value into user control from a consumer view
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    <p>I have a custom UserControl that contains a grid ...I wish to set the <code>ItemsSource</code> property of that grid by xaml code of of a data template in a resource dictionary... then I have used dependency property... this is my implementation...</p> <pre><code>public partial class MyControlGrid : UserControl { // Dependency Property public static readonly DependencyProperty MyItemSourceProperty = DependencyProperty.Register("MyItemSource", typeof(ICollectionView), typeof(MyControlGrid), new FrameworkPropertyMetadata(null, OnMyItemSourcePropertyChanged)); IDictionary&lt;string, string&gt; _columns = new Dictionary&lt;string, string&gt;(); private static void OnMyItemSourcePropertyChanged(DependencyObject obj, DependencyPropertyChangedEventArgs args) { // When the color changes, set the icon color PlayButton MyControlGrid muc = (MyControlGrid)obj; ICollectionView value = (ICollectionView)args.NewValue; if (value != null) { muc.MyGridControl.ItemsSource = value; } } public ICollectionView MyItemSource { get { return (ICollectionView)GetValue(MyItemSourceProperty); } set { SetValue(MyItemSourceProperty, value); //OnTargetPowerChanged(this, new DependencyPropertyChangedEventArgs(TargetPowerProperty, value, value)); // Old value irrelevant. } } public MyControlGrid() { InitializeComponent(); } } </code></pre> <p>this is the user control xaml code</p> <pre><code>&lt;UserControl x:Class="GUI.Design.Templates.MyControlGrid" Name="MyListControl" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:WpfTkit="http://schemas.microsoft.com/wpf/2008/toolkit" xmlns:Templates="clr-namespace:Emule.GUI.Design.Templates"&gt; &lt;StackPanel&gt; &lt;WpfTkit:DataGrid ItemsSource="{Binding RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Templates:MyControlGrid}}, Path=MyItemSource}" x:Name="MyGridControl" &lt;StackPanel&gt; </code></pre> <p>this is the binding path expression I use</p> <pre><code>&lt;basic:MyControlGrid MyItemSource="{Binding MyDataContextVisibleCollection}"/&gt; </code></pre> <p>this dont work and wpf output window dont show me any errors </p> <p>note that, naturally, if I bind this directly in the user controls work fine</p> <pre><code>&lt;WpfTkit:DataGrid ItemsSource="{Binding MyDataContextVisibleCollection}" </code></pre> <p>Waths I wrong?</p> <p>thanks</p> <p>p.s. sorry for my english</p>
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