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ExpandDirection Enumeration

Specifies the direction in which an Expander control opens.

Namespace:  System.Windows.Controls
Assembly:  PresentationFramework (in PresentationFramework.dll)

public enum ExpandDirection
<object property="enumerationMemberName" .../>

Member nameDescription
DownThe Expander control opens down.
UpThe Expander control opens up.
LeftThe Expander control opens left.
RightThe Expander control opens right.

To specify the direction that an Expander control expands, set the ExpandDirection property to one of the enumeration members.

The following example shows how to set the ExpandDirection property to an ExpandDirection enumeration member.

  <RadioButton Name="ExpandDown" Margin="0,10,0,10" 
     Expand Down
  <RadioButton Name="ExpandUp" Margin="0,0,0,10"
     Expand Up
  <RadioButton Name="ExpandLeft" Margin="0,0,0,10"
    Expand Left
  <RadioButton Name="ExpandRight" Margin="0,0,0,10"
    Expand Right

private void ChangeExpandDirection(object sender, RoutedEventArgs e)
    if ((Boolean)ExpandDown.IsChecked)
        myExpander.ExpandDirection = ExpandDirection.Down;
    else if ((Boolean)ExpandUp.IsChecked)
        myExpander.ExpandDirection = ExpandDirection.Up;
    else if ((Boolean)ExpandLeft.IsChecked)
        myExpander.ExpandDirection = ExpandDirection.Left;
    else if ((Boolean)ExpandRight.IsChecked)
        myExpander.ExpandDirection = ExpandDirection.Right;

    //Expand myExpander so it is easier to see the effect of changing 
    //the ExpandDirection property for My Expander
    myExpander.IsExpanded = true;

.NET Framework

Supported in: 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.