PageFunction<T>.Return Event

Definition

Namespace:

System.Windows.Navigation

Assembly:

PresentationFramework.dll

Occurs when a called PageFunction<T> returns, and can only be handled by the calling page.

C#

public event System.Windows.Navigation.ReturnEventHandler<T> Return;

Event Type

ReturnEventHandler<T>

Examples

The following example shows how to handle the Return event.

C#

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;
}

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

• Start()
• RemoveFromJournal