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TogglePattern.Toggle Method

Definition

Namespace:
System.Windows.Automation
Assembly:
UIAutomationClient.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Cycles through the toggle states of an AutomationElement.

public:
 void Toggle();
public void Toggle();
member this.Toggle : unit -> unit
Public Sub Toggle ()

Examples

In the following example, a TogglePattern control pattern is obtained from an AutomationElement and is subsequently used to toggle the AutomationElement.

///--------------------------------------------------------------------
/// <summary>
/// Obtains a TogglePattern control pattern from an automation element.
/// </summary>
/// <param name="targetControl">
/// The automation element of interest.
/// </param>
/// <returns>
/// A TogglePattern object.
/// </returns>
///--------------------------------------------------------------------
private TogglePattern GetTogglePattern(AutomationElement targetControl)
{
 TogglePattern togglePattern = null;

 try
 {
 togglePattern =
 targetControl.GetCurrentPattern(TogglePattern.Pattern)
 as TogglePattern;
 }
 catch (InvalidOperationException)
 {
 // object doesn't support the TogglePattern control pattern
 return null;
 }

 return togglePattern;
}
'''--------------------------------------------------------------------
''' <summary>
''' Obtains a TogglePattern control pattern from an automation element.
''' </summary>
''' <param name="targetControl">
''' The automation element of interest.
''' </param>
''' <returns>
''' A TogglePattern object.
''' </returns>
'''--------------------------------------------------------------------
Private Function GetTogglePattern( _
ByVal targetControl As AutomationElement) As TogglePattern
 Dim togglePattern As TogglePattern = Nothing

 Try
 togglePattern = DirectCast( _
 targetControl.GetCurrentPattern(togglePattern.Pattern), _
 TogglePattern)
 Catch
 ' object doesn't support the TogglePattern control pattern
 Return Nothing
 End Try

 Return togglePattern

End Function 'GetTogglePattern
///--------------------------------------------------------------------
/// <summary>
/// Calls the TogglePattern.Toggle() method for an associated 
/// automation element.
/// </summary>
/// <param name="togglePattern">
/// The TogglePattern control pattern obtained from
/// an automation element.
/// </param>
///--------------------------------------------------------------------
private void ToggleElement(TogglePattern togglePattern)
{
 try
 {
 togglePattern.Toggle();
 }
 catch (InvalidOperationException)
 {
 // object is not able to perform the requested action
 return;
 }
}
'''--------------------------------------------------------------------
''' <summary>
''' Calls the TogglePattern.Toggle() method for an associated 
''' automation element.
''' </summary>
''' <param name="togglePattern">
''' The TogglePattern control pattern obtained from
''' an automation element.
''' </param>
'''--------------------------------------------------------------------
Private Sub ToggleElement(ByVal togglePattern As TogglePattern)
 Try
 togglePattern.Toggle()
 Catch
 ' object is not able to perform the requested action
 Return
 End Try

End Sub

Remarks

A control will cycle through its ToggleState in this order: On, Off and, if supported, Indeterminate.

Applies to


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