WPF 主窗口调用UserControl

1.新建一个UserControl1.xmal

<UserControl x:Class="SurfaceApplication5.UserControl1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="300">
<Grid>
<Button Width="100" Height="80" Content="OK"></Button>
</Grid>
</UserControl>

2.SurfaceWindow1.xaml中调用usercontrol1.xaml

<s:SurfaceWindow x:Class="SurfaceApplication5.SurfaceWindow1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:s="http://schemas.microsoft.com/surface/2008"
Title="SurfaceApplication5"
xmlns:local="clr-namespace:SurfaceApplication5">
<Grid>
<local:UserControl1 x:Name="user1"/>
</Grid>
</s:SurfaceWindow>