PropertyMap.Add(String, PropertyTranslator) Methode

Referenz

Definition

Namespace:: System.Windows.Forms.Integration

Assembly:: WindowsFormsIntegration.dll

Wichtig

Einige Informationen beziehen sich auf Vorabversionen, die vor dem Release ggf. grundlegend überarbeitet werden. Microsoft übernimmt hinsichtlich der hier bereitgestellten Informationen keine Gewährleistungen, seien sie ausdrücklich oder konkludent.

Fügt einen PropertyTranslator-Delegaten für die angegebene Eigenschaft zu PropertyMap hinzu.

public:
 void Add(System::String ^ propertyName, System::Windows::Forms::Integration::PropertyTranslator ^ translator);

public void Add (string propertyName, System.Windows.Forms.Integration.PropertyTranslator translator);

member this.Add : string * System.Windows.Forms.Integration.PropertyTranslator -> unit

Public Sub Add (propertyName As String, translator As PropertyTranslator)

Parameter

propertyName: String

Der Name der zuzuordnenden Eigenschaft.

translator: PropertyTranslator

Der PropertyTranslator-Delegat, der aufgerufen wird, wenn propertyName sich ändert.

Ausnahmen

InvalidOperationException

propertyName verfügt über eine vorhandene Zuordnung.

Beispiele

Das folgende Codebeispiel zeigt, wie Sie einer Steuerelement eine Zuordnung für die Margin Eigenschaft ElementHost hinzufügen.

// The AddMarginMapping method adds a new property mapping
// for the Margin property.
private void AddMarginMapping()
{
    elemHost.PropertyMap.Add(
        "Margin",
        new PropertyTranslator(OnMarginChange));
}

// The OnMarginChange method implements the mapping 
// from the Windows Forms Margin property to the
// Windows Presentation Foundation Margin property.
//
// The provided Padding value is used to construct 
// a Thickness value for the hosted element's Margin
// property.
private void OnMarginChange(object h, String propertyName, object value)
{
    ElementHost host = h as ElementHost;
    Padding p = (Padding)value;
    System.Windows.Controls.Button wpfButton = 
        host.Child as System.Windows.Controls.Button;

    Thickness t = new Thickness(p.Left, p.Top, p.Right, p.Bottom );

    wpfButton.Margin = t;
}

' The AddMarginMapping method adds a new property mapping
' for the Margin property.
Private Sub AddMarginMapping()

    elemHost.PropertyMap.Add( _
        "Margin", _
        New PropertyTranslator(AddressOf OnMarginChange))

End Sub


' The OnMarginChange method implements the mapping 
' from the Windows Forms Margin property to the
' Windows Presentation Foundation Margin property.
'
' The provided Padding value is used to construct 
' a Thickness value for the hosted element's Margin
' property.
Private Sub OnMarginChange( _
ByVal h As Object, _
ByVal propertyName As String, _
ByVal value As Object)

    Dim host As ElementHost = h
    Dim p As Padding = CType(value, Padding)
    Dim wpfButton As System.Windows.Controls.Button = host.Child


    Dim t As New Thickness(p.Left, p.Top, p.Right, p.Bottom)

    wpfButton.Margin = t

End Sub

Das folgende Codebeispiel zeigt, wie Sie einer Steuerelement eine Zuordnung für die Clip Eigenschaft WindowsFormsHost hinzufügen.

// The AddClipMapping method adds a custom 
// mapping for the Clip property.
private void AddClipMapping()
{
    wfHost.PropertyMap.Add(
        "Clip",
        new PropertyTranslator(OnClipChange));
}

// The OnClipChange method assigns an elliptical clipping 
// region to the hosted control's Region property.
private void OnClipChange(object h, String propertyName, object value)
{
    WindowsFormsHost host = h as WindowsFormsHost;
    System.Windows.Forms.CheckBox cb = host.Child as System.Windows.Forms.CheckBox;

    if (cb != null)
    {
        cb.Region = this.CreateClipRegion();
    }
}

// The Window1_SizeChanged method handles the window's 
// SizeChanged event. It calls the OnClipChange method explicitly 
// to assign a new clipping region to the hosted control.
private void Window1_SizeChanged(object sender, SizeChangedEventArgs e)
{
    this.OnClipChange(wfHost, "Clip", null);
}

// The CreateClipRegion method creates a Region from an
// elliptical GraphicsPath.
private Region CreateClipRegion()
{   
    GraphicsPath path = new GraphicsPath();

    path.StartFigure(); 

    path.AddEllipse(new System.Drawing.Rectangle( 
        0, 
        0, 
        (int)wfHost.ActualWidth, 
        (int)wfHost.ActualHeight ) );

    path.CloseFigure(); 

    return( new Region(path) );
}

' The AddClipMapping method adds a custom mapping 
' for the Clip property.
Private Sub AddClipMapping()

    wfHost.PropertyMap.Add( _
        "Clip", _
        New PropertyTranslator(AddressOf OnClipChange))

End Sub

' The OnClipChange method assigns an elliptical clipping 
' region to the hosted control's Region property.
Private Sub OnClipChange( _
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

    If cb IsNot Nothing Then
        cb.Region = Me.CreateClipRegion()
    End If

End Sub

' The Window1_SizeChanged method handles the window's 
' SizeChanged event. It calls the OnClipChange method explicitly 
' to assign a new clipping region to the hosted control.
Private Sub Window1_SizeChanged( _
ByVal sender As Object, _
ByVal e As SizeChangedEventArgs)

    Me.OnClipChange(wfHost, "Clip", Nothing)

End Sub

' The CreateClipRegion method creates a Region from an
' elliptical GraphicsPath.
Private Function CreateClipRegion() As [Region] 
    Dim path As New GraphicsPath()
    
    path.StartFigure()
    
    path.AddEllipse(New System.Drawing.Rectangle( _
        0, _
        0, _
        wfHost.ActualWidth, _
        wfHost.ActualHeight))
    
    path.CloseFigure()
    
    Return New [Region](path)

End Function

Hinweise

Wenn die Einstellung nicht PropertyTranslator propertyNamevorhanden ist, wird der neue Stellvertretung der PropertyMap. Wenn bereits eine PropertyTranslator vorhanden ist propertyName, wird eine InvalidOperationException ausgelöst.

Gilt für

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