How to: Return from a Page Function
This example shows how to return a result from a page function.
Example
To return from a page function, you need to call OnReturn and pass an instance of ReturnEventArgs<T>.
<PageFunction
xmlns="https://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="https://schemas.microsoft.com/winfx/2006/xaml"
xmlns:sys="clr-namespace:System;assembly=mscorlib"
x:Class="UsingPageFunctionsSample.GetStringPageFunction"
x:TypeArguments="sys:String"
Title="GetStringPageFunction">
...
</PageFunction>
public partial class GetStringPageFunction : PageFunction<String>
{
public GetStringPageFunction()
{
InitializeComponent();
}
public GetStringPageFunction(string initialValue) : this()
{
this.stringTextBox.Text = initialValue;
}
void okButton_Click(object sender, RoutedEventArgs e)
{
// Page function is accepted, so return a result
OnReturn(new ReturnEventArgs<string>(this.stringTextBox.Text));
}
void cancelButton_Click(object sender, RoutedEventArgs e)
{
// Page function is cancelled, so don't return a result
OnReturn(new ReturnEventArgs<string>(null));
}
}