Window1.xaml

<StackPanel>
<Button Content="Load Content" Width="120" Height="40" Name="btn"/>
... some script for wpfMap_Loaded....

<Frame Name="frame"/>
</StackPanel>


btn.Click += delegate
{
frame.Navigate(new Uri("Page2.xaml", UriKind.Relative));
};


Page2.xaml

<Pagexmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Page2">
Page2
</Page>