#786 – Using Data Binding to Control a 2D Transform

It’s common to use data binding to control the values used for 2D transformations.  Below is a simple example that binds the AngleCenterX and CenterY properties of a RotateTransform to corresponding properties in a class.

    <StackPanel Margin="20,80">
        <Label Content="Dwight D. Eisenhower (1890-1969)" Background="Plum" Margin="10"
               HorizontalAlignment="Center" Padding="20,10" FontSize="16">
            <Label.LayoutTransform>
                <RotateTransform  Angle="{Binding IkeAngle}"
                                  CenterX="{Binding IkeCenterX}"
                                  CenterY="{Binding IkeCenterY}" />
            </Label.LayoutTransform>
        </Label>
    </StackPanel>
    public partial class MainWindow : Window, INotifyPropertyChanged
    {
        public MainWindow()
        {
            InitializeComponent();
            this.DataContext = this;

            // Test data
            IkeAngle = 25;
            IkeCenterX = 0.0;
            IkeCenterY = 0.0;
        }

        public double IkeAngle { get; set; }
        public double IkeCenterX { get; set; }
        public double IkeCenterY { get; set; }

        //-- INotifyPropertyChanged implementation

        public event PropertyChangedEventHandler PropertyChanged = delegate { };

        private void RaisePropertyChanged(string prop)
        {
            PropertyChanged(this, new PropertyChangedEventArgs(prop));
        }
    }

786-001

About Sean
Software developer in the Twin Cities area, passionate about .NET technologies. Equally passionate about my own personal projects related to family history and preservation of family stories and photos.

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