Binding a property to an integer

I've been reading a lot tutorials but somehow nothing works they mention about binding a property to a simple integer.

Here's the setup:

I got 开发者_如何学Goa user-control. I want to bind "private int size" to the width of a border within the XAML-file.

Whats the easiest way to do this?

The same way you'd bind anything else:

<Border BorderThickness="{Binding Size}">

private int _Size;
public int Size
{
    get { return _Size; }
    set 
    {
        _Size = value; 
        if (PropertyChanged != null)
            PropertyChanged(this, new PropertyChangedEventArgs("Size");
    }
}

Of course your class must implement INotifyPropertyChanged as well.

Another way is to declare a new dependency property and apply TemplateBinding

Here is the control template, where I set bind the Size property to the width.

<Style TargetType="{x:Type local:MyUserControl}">
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type local:MyUserControl}">
                <Border Background="{TemplateBinding Background}"
                        BorderBrush="{TemplateBinding BorderBrush}"
                        BorderThickness="{TemplateBinding BorderThickness}">
                    <TextBox Width="{TemplateBinding Size}"/>
                </Border>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>



public class MyUserControl : Control
{
    static MyUserControl()
    {
        DefaultStyleKeyProperty.OverrideMetadata(typeof(MyUserControl), new FrameworkPropertyMetadata(typeof(MyUserControl)));
    }

    public int Size
    {
        get { return (int)GetValue(SizeProperty); }
        set { SetValue(SizeProperty, value); }
    }

    // Using a DependencyProperty as the backing store for Size.  This enables animation, styling, binding, etc...
    public static readonly DependencyProperty SizeProperty =
        DependencyProperty.Register("Size", typeof(int), typeof(MyUserControl), new UIPropertyMetadata(20));
}

Reference Link