Dependency Properties In Windows 8.1

Dependency Properties

1. Create a windows store blank app.
   
   
   
   
2. Add a user control in app,
   
   
   
   
   
   
3. Create a textblock in usercontrol,
   
   1. <Grid>
   2. <TextBlock HorizontalAlignment="Center" VerticalAlignment="Center" FontSize="50" Foreground="Aqua" />
   3. </Grid>
4. Create a dependency property in code behind of user control either by coding or using shortcut propdp.
   
   1. public string TextBlockText
   2. {
   3. get
   4. {
   5. return (string) GetValue(TextBlockTextProperty);
   6. }
   7. set
   8. {
   9. SetValue(TextBlockTextProperty, value);
   10. }
   11. }
   13. // Using a DependencyProperty as the backing store for TextBlockText. This enables animation, styling, binding, etc...
   14. public static readonly DependencyProperty TextBlockTextProperty =
   15. DependencyProperty.Register("TextBlockText", typeof(string), typeof(MyUserControl1), new PropertyMetadata(string.Empty));
5. Bind the textblock’s text property to the TextBlockText dependency property,
   
   1. <TextBlock Text="{Binding TextBlockText}"
6. Set datacontext for usercontrol so that the binding can work.
   
   1. public MyUserControl1()
   2. {
   3. this.InitializeComponent();
   4. (this.Content as FrameworkElement).DataContext = this;
   5. }
7. In main page create two instances of usercontrol to show the functioning of dependency properties.
   
   1. <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" VerticalAlignment="Center">
   2. <local:MyUserControl1 x:Name="control1" TextBlockText="Control 1 text" />
   3. <local:MyUserControl1 x:Name="control2" TextBlockText="Control 2 text" />
   4. </StackPanel>
8. Run your application and check.