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Expander 클래스

.NET Framework 3.0

Represents the control that displays a header that has a collapsible window that displays content.

네임스페이스: System.Windows.Controls
어셈블리: PresentationFramework(presentationframework.dll)
XML 네임스페이스: http://schemas.microsoft.com/winfx/2006/xaml/presentation

구문

C++

[LocalizabilityAttribute(LocalizationCategory.None, Readability=Readability.Unreadable)] 
public class Expander : HeaderedContentControl

/** @attribute LocalizabilityAttribute(LocalizationCategory.None, Readability=Readability.Unreadable) */ 
public class Expander extends HeaderedContentControl

JScript

LocalizabilityAttribute(LocalizationCategory.None, Readability=Readability.Unreadable) 
public class Expander extends HeaderedContentControl

XAML 개체 요소 사용

<Expander>
  Content
</Expander>

설명

Content Model: Expander is a HeaderedContentControl and has two content properties: Header and Content. For information about how to set these properties, see Headered Content Control Content Model.

The following illustration shows an Expander control.

If the content of the expanded window is too large for the window, you can wrap the content of the Expander in a ScrollViewer control to provide scrollable content. Scrolling capability is not automatically provided by the Expander control.

For an Expander to work correctly, do not specify a Height on the Expander control when the ExpandDirection property is set to Down or Up. Similarly, do not specify a Width on the Expander control when the ExpandDirection property is set to Left or Right. When you set a size on the Expander control in the direction that the expanded content is displayed, the area that is defined by the size parameter is displayed with a border around it. This area displays even when the window is collapsed. To set the size of the expanded window, set size dimensions on the content of the Expander control or the ScrollViewer that encloses the content.

When an Expander control is the last element in a DockPanel, the Expander is sized to fill the remaining area of the DockPanel. To prevent this, set the LastChildFill property on the DockPanel to false, or make sure that the Expander is not the last element in a DockPanel.

The alignment of Expander content can be defined by setting the HorizontalContentAlignment and VerticalContentAlignment properties on the control. These properties are applied to the header and to the contents of the expanded window.

예제

The following example shows how to create a simple Expander control.

XAML

<Expander Name="myExpander" Background="Tan" 
          HorizontalAlignment="Left" Header="My Expander" 
          ExpandDirection="Down" IsExpanded="True" Width="100">
  <TextBlock TextWrapping="Wrap">
    Lorem ipsum dolor sit amet, consectetur
    adipisicing elit, sed do eiusmod tempor incididunt ut
    labore et dolore magna aliqua
  </TextBlock>
</Expander>

추가 코드

How to: Create an Expander	This example shows how to create an Expander control. An Expander control enables users to view a header that expands to display more content or collapses to save space.
How to: Create an Expander with a ScrollViewer	This example shows how to create an Expander control that contains complex content, such as an image and text. The example also encloses the content of the Expander in a ScrollViewer control.
How to: Create a Control That Has an Access Key and Text Wrapping	This example shows how to create a control that has an access key and supports text wrapping. The example uses a Label control to illustrate these concepts.