wpf – 通过XAML将Window.Content设置为页面？

<Window x:Class="MyWindow"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:src="clr-namespace:WpfApplication1"
    Title="ContactsSelector" Height="300" Width="300">
    <Window.Content>
        <src:MyPage>
           <!--MyPage is a page that I created and exists in the project--> 
        </src:MyPage>
    </Window.Content>
</Window>

我想将窗口的内容设置为页面,就像我以编程方式执行它一样：

Dim w As New MyWindow
Dim p As New MyPage
w.Content = p
w.ShowDialog()

或者在窗口的Load事件中设置它,简单地说我希望它在xaml中完成.