Export (0) Print
Expand All

ValuePattern.Pattern Field

Identifies the ValuePattern control pattern.

Namespace:  System.Windows.Automation
Assembly:  UIAutomationClient (in UIAutomationClient.dll)

public static readonly AutomationPattern Pattern

This identifier is used by UI Automation client applications. UI Automation providers should use the equivalent field in ValuePatternIdentifiers.

The pattern identifier is passed to methods such as GetCurrentPattern to retrieve the control pattern of interest from the specified AutomationElement.

In the following example, a ValuePattern control pattern is obtained from an AutomationElement.

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

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

    return valuePattern;
}

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

Show:
© 2014 Microsoft