Bagikan melalui

PropertyMap.Item[String] Properti

Definisi

Ruang nama:
System.Windows.Forms.Integration
Rakitan:
WindowsFormsIntegration.dll

Mendapatkan atau mengatur PropertyTranslator delegasi untuk properti yang diberikan.

public:
 property System::Windows::Forms::Integration::PropertyTranslator ^ default[System::String ^] { System::Windows::Forms::Integration::PropertyTranslator ^ get(System::String ^ propertyName); void set(System::String ^ propertyName, System::Windows::Forms::Integration::PropertyTranslator ^ value); };
public System.Windows.Forms.Integration.PropertyTranslator this[string propertyName] { get; set; }
member this.Item(string) : System.Windows.Forms.Integration.PropertyTranslator with get, set
Default Public Property Item(propertyName As String) As PropertyTranslator

Parameter

propertyName
String

Nama properti yang akan dipetakan.

Nilai Properti

PropertyTranslator

Delegasi PropertyTranslator yang sesuai dengan properti yang ditentukan oleh propertyName.

Pengecualian

ArgumentNullException

propertyName adalah null atau string kosong; delegasi yang ditentukan PropertyTranslator adalah null.

ArgumentException

Properti yang diberikan oleh propertyName tidak ada pada SourceObject.

Contoh

Contoh kode berikut menunjukkan cara mengambil PropertyTranslator delegasi untuk BackColor properti ElementHost kontrol.

// The ExtendBackColorMapping method adds a property
// translator if a mapping already exists.
private void ExtendBackColorMapping()
{
    if (elemHost.PropertyMap["BackColor"] != null)
    {
        elemHost.PropertyMap["BackColor"] += 
            new PropertyTranslator(OnBackColorChange);
    }
}

// The OnBackColorChange method assigns a specific image 
// to the hosted element's Background property.
private void OnBackColorChange(object h, String propertyName, object value)
{
    ElementHost host = h as ElementHost;
    System.Windows.Controls.Button wpfButton = 
        host.Child as System.Windows.Controls.Button;

    ImageBrush b = new ImageBrush(new BitmapImage(
        new Uri(@"file:///C:\WINDOWS\Santa Fe Stucco.bmp")));
    wpfButton.Background = b;
}

' The ExtendBackColorMapping method adds a property
' translator if a mapping already exists.
Private Sub ExtendBackColorMapping()

    If elemHost.PropertyMap("BackColor") IsNot Nothing Then

        elemHost.PropertyMap("BackColor") = PropertyTranslator.Combine( _
            elemHost.PropertyMap("BackColor"), _
            PropertyTranslator.CreateDelegate( _
            GetType(PropertyTranslator), _
            Me, _
            "OnBackColorChange"))
    End If

End Sub


' The OnBackColorChange method assigns a specific image 
' to the hosted element's Background property.
Private Sub OnBackColorChange( _
ByVal h As Object, _
ByVal propertyName As String, _
ByVal value As Object)

    Dim host As ElementHost = h
    Dim wpfButton As System.Windows.Controls.Button = host.Child
    Dim b As New ImageBrush(New BitmapImage( _
        New Uri("file:///C:\WINDOWS\Santa Fe Stucco.bmp")))
    wpfButton.Background = b

End Sub

Contoh kode berikut menunjukkan cara mengambil PropertyTranslator delegasi untuk Background properti WindowsFormsHost kontrol.

// The ExtendBackgroundMapping method adds a property
// translator if a mapping already exists.
private void ExtendBackgroundMapping()
{
    if (wfHost.PropertyMap["Background"] != null)
    {
        wfHost.PropertyMap["Background"] += new PropertyTranslator(OnBackgroundChange);
    }
}

// The OnBackgroundChange method assigns a specific image 
// to the hosted control's BackgroundImage property.
private void OnBackgroundChange(object h, String propertyName, object value)
{
    WindowsFormsHost host = h as WindowsFormsHost;
    System.Windows.Forms.CheckBox cb = host.Child as System.Windows.Forms.CheckBox;
    ImageBrush b = value as ImageBrush;

    if (b != null)
    {
        cb.BackgroundImage = new System.Drawing.Bitmap(@"C:\WINDOWS\Santa Fe Stucco.bmp");
    }
}

' The ExtendBackgroundMapping method adds a property
' translator if a mapping already exists.
Private Sub ExtendBackgroundMapping() 
    If wfHost.PropertyMap("Background") IsNot Nothing Then

        wfHost.PropertyMap("Background") = PropertyTranslator.Combine( _
        wfHost.PropertyMap("Background"), _
        PropertyTranslator.CreateDelegate( _
            GetType(PropertyTranslator), _
            Me, _
            "OnBackgroundChange"))
    End If

End Sub


' The OnBackgroundChange method assigns a specific image 
' to the hosted control's BackgroundImage property.
Private Sub OnBackgroundChange(ByVal h As Object, ByVal propertyName As String, ByVal value As Object) 
    Dim host As WindowsFormsHost = h 
    Dim cb As System.Windows.Forms.CheckBox = host.Child 
    Dim b As ImageBrush = value 
    
    If Not (b Is Nothing) Then
        cb.BackgroundImage = New System.Drawing.Bitmap("C:\WINDOWS\Santa Fe Stucco.bmp")
    End If

End Sub

Keterangan

Saat mengatur, jika tidak PropertyTranslator ada untuk propertyName, delegasi baru ditambahkan ke PropertyMap. PropertyTranslator Jika sudah ada untuk propertyName, itu diganti.

Berlaku untuk

Lihat juga