PageFunction<T>.Return Event
Definition
Important
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Occurs when a called PageFunction<T> returns, and can only be handled by the calling page.
public:
event System::Windows::Navigation::ReturnEventHandler<T> ^ Return;
public event System.Windows.Navigation.ReturnEventHandler<T> Return;
member this.Return : System.Windows.Navigation.ReturnEventHandler<'T>
Public Custom Event Return As ReturnEventHandler(Of T)
Event Type
Examples
The following example shows how to handle the Return event.
void callPageFunctionButton_Click(object sender, RoutedEventArgs e)
{
// Create page function object
GetStringPageFunction pageFunction = new GetStringPageFunction();
// Detect when page function returns
pageFunction.Return += new ReturnEventHandler<String>(PageFunction_Return);
// Call page function
this.NavigationService.Navigate(pageFunction);
}
void PageFunction_Return(object sender, ReturnEventArgs<String> e)
{
// Retrieve page function return value
string returnValue = e.Result;
}
Private Sub callPageFunctionButton_Click(ByVal sender As Object, ByVal e As RoutedEventArgs)
' Create page function object
Dim pageFunction As New GetStringPageFunction()
' Detect when page function returns
AddHandler pageFunction.Return, AddressOf PageFunction_Return
' Call page function
Me.NavigationService.Navigate(pageFunction)
End Sub
Private Sub PageFunction_Return(ByVal sender As Object, ByVal e As ReturnEventArgs(Of String))
' Retrieve page function return value
Dim returnValue As String = e.Result
End Sub
Remarks
A calling page detects when a called PageFunction<T> returns by handling Return. Additionally, the calling page can retrieve the PageFunction<T> return value from the Result property of the ReturnEventArgs<T> which is passed to the event handler.
XAML Attribute Usage
<object Return="ReturnEventHandler"/>
Applies to
See also
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