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    copied!<p>I need to change Rectangle attribute from C# (his RotateTransform angle)</p> <p>The problem is the rectangle was declared in XAML, and in the C# code is out of scope for the rectangle, I tried to use Name, and X:Name without succeed,</p> <p>How should I do it?</p> <p>-------------Edit--------------------</p> <pre><code> &lt;ContentControl Width="5" Height="400" Canvas.Top="80" Canvas.Left="350" Template="{StaticResource DesignerItemTemplateLine}"&gt; &lt;Rectangle Fill="Blue" IsHitTestVisible="False" Name="mRect"&gt; &lt;Rectangle.RenderTransform&gt; &lt;TransformGroup&gt; &lt;RotateTransform Angle="45"/&gt; &lt;/TransformGroup&gt; &lt;/Rectangle.RenderTransform&gt; &lt;/Rectangle&gt; &lt;/ContentControl&gt; </code></pre> <p>C# code</p> <pre><code> private void MoveThumb_DragDelta(object sender, DragDeltaEventArgs e) { Control designerItem = this.DataContext as Control; if (designerItem != null) { double left = Canvas.GetLeft(designerItem); double top = Canvas.GetTop(designerItem); if (mRect != null)// This line don't compile Canvas.SetLeft(designerItem, left + e.HorizontalChange); Canvas.SetTop(designerItem, top + e.HorizontalChange); //Canvas.SetTop(designerItem, top + e.VerticalChange); } } </code></pre> <p>You can notice that "if (mRect != null)" <strong>does not</strong> pass compilation</p> <p>-------------Seconde Edit--- All the code----------------------------</p> <pre><code>&lt;Window x:Class="DiagramDesigner.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:s="clr-namespace:DiagramDesigner" WindowStartupLocation="CenterScreen" Title="Move" Height="550" Width="750"&gt; </code></pre> <p></p> <pre><code>&lt;!-- MoveThumb Template --&gt; &lt;ControlTemplate x:Key="MoveThumbTemplate" TargetType="{x:Type s:MoveThumbUpDwon}"&gt; &lt;Rectangle Fill="Transparent"/&gt; &lt;/ControlTemplate&gt; &lt;!-- MoveThumb Template --&gt; &lt;ControlTemplate x:Key="MoveThumbTemplateLeftRight" TargetType="{x:Type s:MoveThumbLeftRight}"&gt; &lt;Rectangle Fill="Transparent"/&gt; &lt;/ControlTemplate&gt; &lt;!-- MoveThumb Template --&gt; &lt;ControlTemplate x:Key="MoveLineTemplate" TargetType="{x:Type s:MoveLine}"&gt; &lt;Rectangle Fill="Black"&gt; &lt;Rectangle.RenderTransform&gt; &lt;TransformGroup&gt; &lt;RotateTransform Angle="45"/&gt; &lt;/TransformGroup&gt; &lt;/Rectangle.RenderTransform&gt; &lt;/Rectangle&gt; &lt;/ControlTemplate&gt; &lt;!-- Designer Item Template--&gt; &lt;ControlTemplate x:Key="DesignerItemTemplate" TargetType="ContentControl"&gt; &lt;Grid DataContext="{Binding RelativeSource={RelativeSource TemplatedParent}}"&gt; &lt;s:MoveThumbUpDwon Template="{StaticResource MoveThumbTemplate}" Cursor="SizeAll"/&gt; &lt;ContentPresenter Content="{TemplateBinding ContentControl.Content}"/&gt; &lt;/Grid&gt; &lt;/ControlTemplate&gt; &lt;ControlTemplate x:Key="DesignerItemTemplateLeftRight" TargetType="ContentControl"&gt; &lt;Grid DataContext="{Binding RelativeSource={RelativeSource TemplatedParent}}"&gt; &lt;s:MoveThumbLeftRight Template="{StaticResource MoveThumbTemplateLeftRight}" Cursor="SizeAll"/&gt; &lt;ContentPresenter Content="{TemplateBinding ContentControl.Content}"/&gt; &lt;/Grid&gt; &lt;/ControlTemplate&gt; &lt;ControlTemplate x:Key="DesignerItemTemplateLine" TargetType="ContentControl"&gt; &lt;Grid DataContext="{Binding RelativeSource={RelativeSource TemplatedParent}}"&gt; &lt;s:MoveLine Template="{StaticResource MoveLineTemplate}" Cursor="SizeAll"/&gt; &lt;ContentPresenter Content="{TemplateBinding ContentControl.Content}"/&gt; &lt;/Grid&gt; &lt;/ControlTemplate&gt; &lt;/Window.Resources&gt; &lt;Canvas&gt; &lt;ContentControl Width="600" Height="5" Canvas.Top="250" Canvas.Left="80" Template="{StaticResource DesignerItemTemplate}"&gt; &lt;Rectangle Fill="Blue" IsHitTestVisible="False"/&gt; &lt;/ContentControl&gt; &lt;ContentControl Width="5" Height="400" Canvas.Top="80" Canvas.Left="350" Template="{StaticResource DesignerItemTemplateLeftRight}"&gt; &lt;Rectangle Fill="Blue" IsHitTestVisible="False"/&gt; &lt;/ContentControl&gt; &lt;ContentControl Width="5" Height="400" Canvas.Top="80" Canvas.Left="350" Template="{StaticResource DesignerItemTemplateLine}"&gt; &lt;Rectangle Fill="Blue" IsHitTestVisible="False" Name="mRect"&gt; &lt;Rectangle.RenderTransform&gt; &lt;TransformGroup&gt; &lt;RotateTransform Angle="45"/&gt; &lt;/TransformGroup&gt; &lt;/Rectangle.RenderTransform&gt; &lt;/Rectangle&gt; &lt;/ContentControl&gt; &lt;/Canvas&gt; </code></pre> <p></p> <p>Now the C# code</p> <pre><code>using System.Windows.Controls; using System.Windows.Controls.Primitives; using System.Windows.Shapes; using System.Windows.Media; using System.Windows; namespace DiagramDesigner { public class MoveThumbUpDwon : Thumb { public MoveThumbUpDwon() { DragDelta += new DragDeltaEventHandler(this.MoveThumb_DragDelta); } private void MoveThumb_DragDelta(object sender, DragDeltaEventArgs e) { Control designerItem = this.DataContext as Control; if (designerItem != null) { double left = Canvas.GetLeft(designerItem); double top = Canvas.GetTop(designerItem); //Canvas.SetLeft(designerItem, left + e.HorizontalChange); Canvas.SetTop(designerItem, top + e.VerticalChange); } } } public class MoveThumbLeftRight : Thumb { public MoveThumbLeftRight() { DragDelta += new DragDeltaEventHandler(this.MoveThumb_DragDelta); } private void MoveThumb_DragDelta(object sender, DragDeltaEventArgs e) { Control designerItem = this.DataContext as Control; if (designerItem != null) { double left = Canvas.GetLeft(designerItem); double top = Canvas.GetTop(designerItem); Canvas.SetLeft(designerItem, left + e.HorizontalChange); //Canvas.SetTop(designerItem, top + e.VerticalChange); } } } public class MoveLine : Thumb { public MoveLine() { DragDelta += new DragDeltaEventHandler(this.MoveThumb_DragDelta); } private void MoveThumb_DragDelta(object sender, DragDeltaEventArgs e) { Control designerItem = this.DataContext as Control; if (designerItem != null) { double left = Canvas.GetLeft(designerItem); double top = Canvas.GetTop(designerItem); // if (mRect != null) Canvas.SetLeft(designerItem, left + e.HorizontalChange); Canvas.SetTop(designerItem, top + e.HorizontalChange); //Canvas.SetTop(designerItem, top + e.VerticalChange); } } } </code></pre> <p>}</p>
 

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