Databinding between 2 Dependency Properties

Question

I'm trying to do databinding between 2 Dependency Properties. I guess this should be quite easy, anyways I just don't get it. I already googled but I couldn't really find out what I'm doing wrong.

I'm trying to bind the ControlPointProperty to the QuadraticBezierSegment.Point1Property, however it doesn't work. Thanks for any hint!

 class DataBindingTest : DependencyObject { // Dependency Property public static readonly DependencyProperty ControlPointProperty; // .NET wrapper public Point ControlPoint { get { return (Point)GetValue(DataBindingTest.ControlPointProperty); } set { SetValue(DataBindingTest.ControlPointProperty, value); } } // Register Dependency Property static DataBindingTest() { DataBindingTest.ControlPointProperty = DependencyProperty.Register("ControlPoint", typeof(Point), typeof(DataBindingTest)); } public DataBindingTest() { QuadraticBezierSegment bezier = new QuadraticBezierSegment(); // Binding Binding myBinding = new Binding(); myBinding.Source = ControlPointProperty; BindingOperations.SetBinding(bezier, QuadraticBezierSegment.Point1Property, myBinding); // Test Binding: Change the binding source ControlPoint = new Point(1, 1); MessageBox.Show(bezier.Point1.ToString()); // gives (0,0), should be (1,1) } }

majocha · Accepted Answer · 2010-04-11 21:18:22Z

1

Source is not a property to bind, but source object. This works:

Binding myBinding = new Binding("ControlPoint"); myBinding.Source = this;

answered Apr 11, 2010 at 21:18

majocha

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me.at.coding Over a year ago

thank you so much for the fast reply. works not without any problems. for setting the path one can use myBinding.Path = new PropertyPath(ControlPointProperty); which has better IDE integration / no string as parameter.

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