Dependency Property ListBox
- by developer
Hi All,
I want to use a dependency property, so that my label displays values selected in the listbox. This is just to more clearly understand the working of a dependency property.
<Window x:Class="WpfApplication1.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:WPFToolkit="clr-namespace:Microsoft.Windows.Controls;assembly=WPFToolkit"
xmlns:local="clr-namespace:WpfApplication1" x:Name="MyWindow"
Height="200" Width="300" >
<StackPanel>
<ListBox x:Name="lbColor" Width="248" Height="56" ItemsSource="{Binding TestColor}"/>
<StackPanel>
<Label Content="{Binding Path=Test, ElementName=lbColor}" />
</StackPanel>
</StackPanel>
</Window>
Code Behind,
namespace WpfApplication1
{
/// <summary>
/// Interaction logic for Window1.xaml
/// </summary>
public partial class Window1 : Window
{
public ObservableCollection<string> TestColor { get; set; }
public String Test
{
get { return (String)GetValue(TestProperty); }
set { SetValue(TestProperty, value); }
}
// Using a DependencyProperty as the backing store for Title. This enables animation, styling, binding, etc...
public static readonly DependencyProperty TestProperty =
DependencyProperty.Register("Test", typeof(String), typeof(ListBox), new UIPropertyMetadata("Test1"));
public Window1()
{
InitializeComponent();
TestColor = new ObservableCollection<string>();
DataContext = this;
TestColor.Add("Red");
TestColor.Add("Orange");
TestColor.Add("Yellow");
TestColor.Add("Green");
TestColor.Add("Blue");
}
}
}
Can anyone explain me how will I accompalish this using a dependency property. Somehow I am very confused with the Dependency Property concept, and I just wanted to see a working example for that.
