TablePattern.TablePatternInformation.GetColumnHeaders Metode

Definisi

Ruang nama:

System.Windows.Automation

Rakitan:

UIAutomationClient.dll

Mengambil kumpulan AutomationElements yang mewakili semua header kolom dalam tabel.

public:
 cli::array <System::Windows::Automation::AutomationElement ^> ^ GetColumnHeaders();

public System.Windows.Automation.AutomationElement[] GetColumnHeaders();

member this.GetColumnHeaders : unit -> System.Windows.Automation.AutomationElement[]

Public Function GetColumnHeaders () As AutomationElement()

Mengembalikan

AutomationElement[]

Koleksi AutomationElements. Defaultnya adalah array kosong.

Contoh

Dalam contoh berikut, header baris atau kolom diambil untuk item tabel tertentu.

Untuk tujuan contoh ini, hubungan antara RowOrColumnMajor properti dan item header baris dan kolom ditunjukkan. Namun, tabel dapat memiliki header baris dan kolom terlepas dari RowOrColumnMajor properti tabel.

///--------------------------------------------------------------------
/// <summary>
/// Obtains a table items primary row or column header.
/// </summary>
/// <param name="tableItem">
/// The table item of interest.
/// </param>
/// <returns>
/// The table item header.
/// </returns>
///--------------------------------------------------------------------
private AutomationElement GetTableItemHeader(TableItemPattern tableItem)
{
    if (tableItem == null)
    {
        throw new ArgumentException("Target element cannot be null.");
    }

    TablePattern tablePattern = GetTablePattern(tableItem.Current.ContainingGrid);

    if (tablePattern == null)
    {
        return null;
    }

    AutomationElement[] tableHeaders = 
        GetPrimaryHeaders(tablePattern);

    if (tableHeaders == null)
    {
        // Indeterminate headers.
        return null;
    }

    if (tablePattern.Current.RowOrColumnMajor == RowOrColumnMajor.ColumnMajor)
    {
        return tableHeaders[tableItem.Current.Column];
    }

    if (tablePattern.Current.RowOrColumnMajor == RowOrColumnMajor.RowMajor)
    {
        return tableHeaders[tableItem.Current.Row];
    }

    return null;
}

///--------------------------------------------------------------------
/// <summary>
/// Obtains an array of table headers.
/// </summary>
/// <param name="tablePattern">
/// The TablePattern object of interest.
/// </param>
/// <returns>
/// The table row or column primary headers.
/// </returns>
///--------------------------------------------------------------------
private AutomationElement[] GetPrimaryHeaders(
    TablePattern tablePattern)
{
    if (tablePattern.Current.RowOrColumnMajor == 
        RowOrColumnMajor.RowMajor)
    {
        return tablePattern.Current.GetRowHeaders();
    }

    if (tablePattern.Current.RowOrColumnMajor == 
        RowOrColumnMajor.ColumnMajor)
    {
        return tablePattern.Current.GetColumnHeaders();
    }

    return null;
}

'''--------------------------------------------------------------------
''' <summary>
''' Obtains a table items primary row or column header.
''' </summary>
''' <param name="tableItem">
''' The table item of interest.
''' </param>
''' <returns>
''' The table item header.
''' </returns>
'''--------------------------------------------------------------------
Private Function GetTableItemHeader( _
ByVal tableItem As TableItemPattern) As AutomationElement
    If tableItem Is Nothing Then
        Throw New ArgumentException("Target element cannot be null.")
    End If

    Dim tablePattern As TablePattern = _
    GetTablePattern(tableItem.Current.ContainingGrid)

    If tablePattern Is Nothing Then
        Return Nothing
    End If

    Dim tableHeaders As AutomationElement() = _
    GetPrimaryHeaders(tablePattern)

    If tableHeaders Is Nothing Then
        ' Indeterminate headers.
        Return Nothing
    End If

    If tablePattern.Current.RowOrColumnMajor = _
    RowOrColumnMajor.ColumnMajor Then
        Return tableHeaders(tableItem.Current.Column)
    End If

    If tablePattern.Current.RowOrColumnMajor = _
    RowOrColumnMajor.RowMajor Then
        Return tableHeaders(tableItem.Current.Row)
    End If

    Return Nothing

End Function 'GetTableItemHeader    

'''--------------------------------------------------------------------
''' <summary>
''' Obtains an array of table headers.
''' </summary>
''' <param name="tablePattern">
''' The TablePattern object of interest.
''' </param>
''' <returns>
''' The table primary row or column headers.
''' </returns>
'''--------------------------------------------------------------------
Private Overloads Function GetPrimaryHeaders( _
ByVal tablePattern As TablePattern) As AutomationElement()
    If tablePattern.Current.RowOrColumnMajor = _
    RowOrColumnMajor.RowMajor Then
        Return tablePattern.Current.GetRowHeaders()
    End If

    If tablePattern.Current.RowOrColumnMajor = _
    RowOrColumnMajor.ColumnMajor Then
        Return tablePattern.Current.GetColumnHeaders()
    End If

    Return Nothing

End Function 'GetPrimaryHeaders

Lihat juga

• Mengekspos Konten Tabel Menggunakan Automasi UI