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POhow to bind collection to custom control in wpf
 

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  1. POhow to bind collection to custom control in wpf
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    <p>I am building a custom control and I want to pass a collection to it so that control display that collection, my code is as the following :</p> <pre><code>&lt;gm:Calendar SubscriptionSource="{Binding Subscriptions}"&gt;&lt;/gm:Calendar&gt; </code></pre> <p>and in Custom control "Calendar" </p> <pre><code>public static readonly DependencyProperty SubscriptionSourceProperty = DependencyProperty.Register( "SubscriptionSource", typeof(ObservableCollection&lt;Subscription&gt;), typeof(Calendar), new FrameworkPropertyMetadata(new ObservableCollection&lt;Subscription&gt;())); public ObservableCollection&lt;Subscription&gt; SubscriptionSource { get { return (ObservableCollection&lt;Subscription&gt;)GetValue(SubscriptionSourceProperty); } set { SetValue(SubscriptionSourceProperty, value); } } </code></pre> <p>I use in generic.xaml</p> <pre><code>&lt;ItemsControl ItemsSource="{Binding SubscriptionSource}"&gt; &lt;ItemsControl.ItemTemplate&gt; &lt;DataTemplate&gt; &lt;!--Box--&gt; &lt;Border BorderBrush="Black" BorderThickness="1" Padding="0"&gt; &lt;Border Name="InnerBorder" BorderBrush="{Binding Path=Day, Converter={StaticResource DayBorderColorConverter}}" BorderThickness="2"&gt; &lt;Border.Style&gt; &lt;Style TargetType="{x:Type Border}"&gt; &lt;Style.Triggers&gt; &lt;!--Current Day--&gt; &lt;DataTrigger Binding="{Binding IsToday}" Value="true"&gt; &lt;Setter Property="Border.Background"&gt; &lt;Setter.Value&gt; &lt;LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0"&gt; &lt;GradientStop Color="#FF1EA6C8" Offset="0"/&gt; &lt;GradientStop Color="#FF0691B3" Offset="1"/&gt; &lt;/LinearGradientBrush&gt; &lt;/Setter.Value&gt; &lt;/Setter&gt; &lt;/DataTrigger&gt; &lt;/Style.Triggers&gt; &lt;/Style&gt; &lt;/Border.Style&gt; &lt;DockPanel&gt; &lt;!--Day Number--&gt; &lt;StackPanel Orientation="Horizontal" DockPanel.Dock="Top" FlowDirection="RightToLeft"&gt; &lt;TextBlock TextAlignment="Right" Text="{Binding Day.Date, Converter={StaticResource DateConverter}, ConverterParameter=DAY}" FontSize="12" Margin="5,5,5,5" &gt; &lt;TextBlock.Style&gt; &lt;Style TargetType="{x:Type TextBlock}"&gt; &lt;Style.Triggers&gt; &lt;DataTrigger Binding="{Binding IsTargetMonth}" Value="false"&gt; &lt;Setter Property="TextBlock.Foreground" Value="Gray"&gt;&lt;/Setter&gt; &lt;/DataTrigger&gt; &lt;/Style.Triggers&gt; &lt;/Style&gt; &lt;/TextBlock.Style&gt; &lt;/TextBlock&gt; &lt;/StackPanel&gt; &lt;CheckBox IsEnabled="{Binding IsEnabled}" Style="{StaticResource DiscreteCheckBoxStyle}" /&gt; &lt;/DockPanel&gt; &lt;/Border&gt; &lt;/Border&gt; &lt;/DataTemplate&gt; &lt;/ItemsControl.ItemTemplate&gt; &lt;ItemsControl.ItemsPanel&gt; &lt;ItemsPanelTemplate&gt; &lt;UniformGrid Rows="6" Columns="7" /&gt; &lt;/ItemsPanelTemplate&gt; &lt;/ItemsControl.ItemsPanel&gt; &lt;/ItemsControl&gt; </code></pre> <p>I want to Bind Subscriptions observable collection to the calendar custom control so I can use the collection in the custom control, is there is away to do this?</p>
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    1. USMuhammad Alaa
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    1. COThe value of the dependency property will be empty during the constructor because at that time WPF hasn't even constructed the control, let alone assigned values to dependency properties. You would be better off using a PropertyChangedCallback on the dependency property instead of trying to access the list in the constructor.
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      1. POhow to bind collection to custom control in wpf
      1. USLuke Woodward
    2. COthank you for your response, as you can see I want to Bind Subscriptions observable collection to the calendar custom control so I can use the collection in the custom control, is there is away to do this?
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      1. POhow to bind collection to custom control in wpf
      1. USMuhammad Alaa
    3. COLike I said, use a PropertyChangedCallback and you will be able to get access to the collection in the custom control. First Google search result: http://stackoverflow.com/questions/5498517/how-to-use-propertychangedcallback.
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      1. POhow to bind collection to custom control in wpf
      1. USLuke Woodward
 

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