Question

On my WPF XAML form I’ve got a lot of elements which I bind to my properties.

For each one property I’m making this steps:

<TextBlock Grid.Column="0" Grid.Row="0" Name="TB11" Text="{Binding TBX11}" 
            VerticalAlignment="Center" HorizontalAlignment="Center" 
            DataContext="{Binding RelativeSource={RelativeSource Self}}" />

and

#region TBX11
private static void OnXBPropertyChanged(DependencyObject dependencyObject,
                DependencyPropertyChangedEventArgs e) 
{
    table myUserControl = dependencyObject as table;
    myUserControl.OnPropertyChanged("XB11");
    myUserControl.OnCaptionPropertyChanged(e);
}
private void OnCaptionPropertyChanged(DependencyPropertyChangedEventArgs e) {
    TB11.Text = TBX11;
}
public static readonly DependencyProperty TBX11Property =
        DependencyProperty.Register("TBX11", typeof(string), typeof(table),
        new PropertyMetadata(string.Empty, OnXBPropertyChanged));
public string TBX11 {
    get { return GetValue(TBX11Property).ToString(); }
    set {
        SetValue(TBX11Property, value);
        OnPropertyChanged("TBX11");
    }
}
#endregion

I can’t even realize for now how many times I will need to write the same here but I don’t know if I can make it somehow easier? Because all I need to set from here is WPF block name and binding name.

Answer 1

There are a couple of ways you can reduce repetition:

1. Introduce user-controls for reducing repeated XAML and C# code. See this tutorial I wrote for more details.
2. If you have a list of identical UI elements, as an ItemsControl with an ItemTemplate to create the repeated elements.

I have spotted a few issues with your code:

1. In your OnCaptionPropertyChanged method you set the TextBlock.Text, you should noty do this – this binding will take care of the update!
2. Within your TBX11 property you invoke this method OnPropertyChanged("TBX11"), you should not add any logic to the getters or setters of dependency properties. There is no guarantee these will be invoked.
3. Your TextBlock.DataContext is set to itself, so the Text binding will not work!