增加

Main.Test/MainHeaderImageContent.xaml

@@ -0,0 +1,13 @@
+<UserControl
+	x:Class="Main.Test.MainHeaderImageContent" 
+	xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+	xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+	xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+	xmlns:local="clr-namespace:Main.Test"
+	xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+	Height="200"
+	d:DesignHeight="450"
+	d:DesignWidth="800"
+	mc:Ignorable="d">
+	<Grid />
+</UserControl>