[falcon eyes]

Hi Every body

I have initialized C# WPF application,and in the main window class i have created a property called "Myangel", and i have Path object with the Name "indicaitor" which i created via the XML file ,i've made rotate transform for this path.

My question is how to bind "Myangel" property in the mainwindow to the "Angel" property of the Rotate Transform in the XML file?

My Code as below

<Window x:Class="CtrlTst.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525" MouseDoubleClick="Window_MouseDoubleClick">
    <Grid>
        <Path Stroke="Black" Fill="Azure" StrokeThickness="4">
            <Path.Data>
                <PathGeometry>
                    <PathFigure StartPoint="175,150" IsClosed="True">
                        <ArcSegment Point="325,150" Size="1,1" SweepDirection="Clockwise"></ArcSegment>
                    </PathFigure>
                </PathGeometry>
            </Path.Data>
        </Path>
        <Path Stroke="red" StrokeThickness="4">
            <Path.Data>
                <EllipseGeometry Center="250,150" RadiusX="100" RadiusY="100" ></EllipseGeometry>
            </Path.Data>
        </Path>
        <Path Stroke="Red"  StrokeThickness="2" Fill="Red" Name="indicaitor">
            <Path.Data>
                <PathGeometry>
                    <PathFigure StartPoint="250,150" IsClosed="False" >
                    
                        <PolyLineSegment Points="195,150,200,145,200,155,195,150"></PolyLineSegment>
                    </PathFigure>
                </PathGeometry>
                    <!--  <LineGeometry StartPoint="250,150" EndPoint="250,90"></LineGeometry>-->
            </Path.Data>
            <Path.RenderTransform>
                <RotateTransform CenterX="250" CenterY="150" Angle="{Binding }"></RotateTransform>
            </Path.RenderTransform>
        </Path>
        <TextBox Height="43" HorizontalAlignment="Left" Margin="203,178,0,0" Name="textBox1" VerticalAlignment="Top" Width="91" TextChanged="textBox1_TextChanged" />
    </Grid>
</Window>

Thanks;

[falcon eyes]

Pls some one help

[ragingben]

If you aren't binding the windows DataContect to itself you can use this method to find the window, and then bind to the property:

Add namespace

xmlns:local="clr-namespace:CtrlTst"

Bind angle

<RotateTransform CenterX="250" CenterY="150" Angle="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type local:MainWindow}}, Path=Myangel, Mode=OneWay}"></RotateTransform>

I recommend (in general) binding the windows DataContext to the window itself then, as this simplifies most binding for a window. 90% of my windows are setup this way:

<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Window1" Height="300" Width="300" DataContext="{Binding RelativeSource={RelativeSource Self}}" Foreground="Blue">
    <Grid Background="{Binding Path=Foreground}"/>
</Window>

This post has been edited by ragingben: 10 November 2011 - 05:32 AM

[falcon eyes]

thanks
I will try your suggestions

[falcon eyes]

thank you it worked