通过

MouseDragElementBehavior Behavior (Compact 2013)

  • 项目

3/26/2014

You can easily add the functionality of dragging an item on a screen to an element by adding a MouseDragElementBehavior behavior. For instance, the following XAML example shows you how to create a Rectangle that can be dragged on the display screen with the mouse.

<Rectangle Fill="#FF4E4EA8" HorizontalAlignment="Left" Height="100" Stroke="Black"
   VerticalAlignment="Top" Width="100" Margin="50,62,0,0" StrokeThickness="10">

   <!-- This collection element might exist if you have already added other behaviors. -->
   <i:Interaction.Behaviors>

      <!-- Invoke the MouseDragElementBehavior, optionally constraining its movement. -->
      <ei:MouseDragElementBehavior ConstrainToParentBounds="True"/>

   </i:Interaction.Behaviors>
</Rectangle>

Important

Note that the MouseDragElementBehavior behavior is not supported for any controls that handle MouseClick events (for example, Button, TextBox, and ListBox controls). If you need the ability to drag a control of one of these types, make that control a child of a control that can be dragged (such as a Border). You can then apply the MouseDragElementBehavior behavior to the parent element.

See Also

Concepts

Expression Blend Behaviors in XAML for Windows Embedded
Behaviors, Actions, and Triggers