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. }  
   12.   
   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.