XF内容视图和框架

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:local="clr-namespace:App3"
             x:Class="App3.MainPage">
    <Frame OutlineColor="Black" VerticalOptions="Center" HorizontalOptions="Center">
    <Image x:Name="myImage"></Image>
    </Frame>

</ContentPage>