Zoom Property

NavigationCommands.Zoom Property

 

Gets the value that represents the Zoom command.

Namespace:   System.Windows.Input
Assembly:  PresentationCore (in PresentationCore.dll)

public static RoutedUICommand Zoom { get; }

Property Value

Type: System.Windows.Input.RoutedUICommand

The routed UI command.

Default Values

Key Gesture

N/A

UI Text

Zoom

This command indicates the intention to set the zoom level.

There is no implementation for responding to the Zoom command on any given WPF class. As such, you need to provide an appropriate implementation, which is shown in the example.

<object property="NavigationCommands.Zoom"/>

The following example shows how to implement code that responds to the Zoom command in conjunction with a FlowDocumentPageViewer.

<Window
  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
  x:Class="SDKSample.Zoom">
<FlowDocumentPageViewer Name="flowDocumentPageViewer" MinZoom="50" MaxZoom="200">

  <!-- Zoom Context Menu-->
  <FlowDocumentPageViewer.ContextMenu>
    <ContextMenu>
      <ContextMenu.CommandBindings>
        <CommandBinding
          Command="NavigationCommands.Zoom"
          CanExecute="navigationCommandZoom_CanExecute"
          Executed="navigationCommandZoom_Executed" />
      </ContextMenu.CommandBindings>
      <MenuItem Header="50%" Command="NavigationCommands.Zoom" CommandParameter="50" />
      <MenuItem Header="100%" Command="NavigationCommands.Zoom" CommandParameter="100" />
      <MenuItem Header="150%" Command="NavigationCommands.Zoom" CommandParameter="150" />
      <MenuItem Header="200%" Command="NavigationCommands.Zoom" CommandParameter="200" />
    </ContextMenu>
  </FlowDocumentPageViewer.ContextMenu>

  <FlowDocument>
    <!-- Document Content-->
    <Paragraph>
      Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Sed vulputate, lacus non sagittis pharetra, diam dolor dictum tellus, et hendrerit odio risus nec erat. Nam sollicitudin imperdiet mi. Sed rutrum. Morbi vel nunc. Donec imperdiet. Morbi hendrerit leo. Maecenas imperdiet. Curabitur viverra tempor nisi. Phasellus vitae augue sit amet neque venenatis elementum. Proin posuere lobortis quam. Curabitur et neque. Donec ac sem vitae libero pharetra luctus. Fusce purus. Nulla vehicula, leo commodo dictum lobortis, odio augue accumsan ante, id dictum nisi libero quis diam. Nam augue erat, malesuada eu, tincidunt eu, dictum ut, ante. In vel magna vel ligula faucibus lobortis. Praesent a felis non mi fringilla vulputate. Integer quis tellus cursus elit tincidunt vehicula. Morbi commodo sem eu eros. Vestibulum ante ipsum primis in faucibus orci luctus et ultrices posuere cubilia Curae;
    </Paragraph>
  </FlowDocument>
</FlowDocumentPageViewer>
</Window>

.NET Framework
Available since 3.0
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