PropertyMap.Item[String] Propriété
Définition
Important
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Obtient ou définit le délégué PropertyTranslator pour la propriété donnée.
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
Paramètres
- propertyName
- String
Nom de la propriété à mapper.
Valeur de propriété
Délégué PropertyTranslator correspondant à la propriété spécifiée par propertyName
.
Exceptions
propertyName
a la valeur null
ou est une chaîne vide ; le délégué PropertyTranslator spécifié a la valeur null
.
La propriété donnée par propertyName
n’existe pas sur SourceObject.
Exemples
L’exemple de code suivant montre comment récupérer le PropertyTranslator délégué pour la BackColor propriété d’un ElementHost contrôle.
// 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
L’exemple de code suivant montre comment récupérer le PropertyTranslator délégué pour la Background propriété d’un WindowsFormsHost contrôle.
// 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
Remarques
Lors de la définition, s’il n’existe pas PropertyTranslator pour propertyName
, le nouveau délégué est ajouté au PropertyMap. PropertyTranslator S’il existe déjà pour propertyName
, il est remplacé.