TablePattern.ColumnHeadersProperty 字段

定义

命名空间:

System.Windows.Automation

程序集:

UIAutomationClient.dll

标识获取表格列标题集合的属性。

public: static initonly System::Windows::Automation::AutomationProperty ^ ColumnHeadersProperty;

public static readonly System.Windows.Automation.AutomationProperty ColumnHeadersProperty;

 staticval mutable ColumnHeadersProperty : System.Windows.Automation.AutomationProperty

Public Shared ReadOnly ColumnHeadersProperty As AutomationProperty 

字段值

AutomationProperty

示例

在以下示例中，检索表示表的主行或列标题的对象数组 AutomationElement 。

本示例演示了属性与行标题项和列标题项之间的关系 RowOrColumnMajor 。 但是，无论表的属性如何，表都可以有行标题和列标题 RowOrColumnMajor 。

///--------------------------------------------------------------------
/// <summary>
/// Obtains an array of primary table headers.
/// </summary>
/// <param name="targetControl">
/// The target control of interest.
/// </param>
/// <param name="roworcolumnMajor">
/// The RowOrColumnMajor specifier.
/// </param>
/// <returns>
/// An array of automation elements.
/// </returns>
///--------------------------------------------------------------------
private AutomationElement[] GetPrimaryHeaders(
    AutomationElement targetControl, RowOrColumnMajor roworcolumnMajor)
{
    if (targetControl == null)
    {
        throw new ArgumentException("Target element cannot be null.");
    }

    try
    {
        if (roworcolumnMajor ==
            RowOrColumnMajor.RowMajor)
        {
            return targetControl.GetCurrentPropertyValue(
                TablePattern.RowHeadersProperty) as AutomationElement[];
        }

        if (roworcolumnMajor ==
            RowOrColumnMajor.ColumnMajor)
        {
            return targetControl.GetCurrentPropertyValue(
                TablePattern.ColumnHeadersProperty) as AutomationElement[];
        }
    }
    catch (InvalidOperationException)
    {
        // TablePattern not supported.
        // TO DO: error processing.
    }

    return null;
}

'''--------------------------------------------------------------------
''' <summary>
''' Obtains an array of primary table headers.
''' </summary>
''' <param name="targetControl">
''' The target control of interest.
''' </param>
''' <param name="roworcolumnMajor">
''' The RowOrColumnMajor specifier.
''' </param>
''' <returns>
''' Automation element array objects.
''' </returns>
'''--------------------------------------------------------------------
Private Overloads Function GetPrimaryHeaders( _
ByVal targetControl As AutomationElement, _
ByVal roworcolumnMajor As RowOrColumnMajor) As AutomationElement()
    If targetControl Is Nothing Then
        Throw New ArgumentException("Target element cannot be null.")
    End If

    Try
        If roworcolumnMajor = roworcolumnMajor.RowMajor Then
            Return DirectCast(targetControl.GetCurrentPropertyValue( _
            TablePattern.RowHeadersProperty), AutomationElement())
        End If

        If roworcolumnMajor = roworcolumnMajor.ColumnMajor Then
            Return DirectCast(targetControl.GetCurrentPropertyValue( _
            TablePattern.ColumnHeadersProperty), AutomationElement())
        End If
    Catch exc As InvalidOperationException
        ' TablePattern not supported.
        ' TO DO: error processing.
    End Try

    Return Nothing

End Function 'GetPrimaryHeaders

注解

此标识符由UI 自动化客户端应用程序使用。 UI 自动化提供程序应使用等效字段。TablePatternIdentifiers

返回的标头的顺序将在提供程序内保持一致，但不一定跨提供程序。

此属性不存在， TablePattern.TablePatternInformation 必须使用 GetCurrentPropertyValue 或 GetCachedPropertyValue检索此属性。

另请参阅

• 使用 UI 自动化公开表的内容