添加项目文件。

BaseFrame/Resources/Styles/WindowStyle.xaml

@@ -0,0 +1,22 @@
+<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
+
+    <Style x:Key="DialogUserManageStyle"
+           TargetType="Window">
+        <Setter Property="WindowStyle"
+                Value="None" />
+        <Setter Property="Topmost"
+                Value="True" />
+        <Setter Property="ResizeMode"
+                Value="NoResize" />
+        <Setter Property="ShowInTaskbar"
+                Value="False" />
+        <Setter Property="AllowsTransparency"
+                Value="true" />
+        <Setter Property="Background"
+                Value="Transparent" />
+        <Setter Property="SizeToContent"
+                Value="WidthAndHeight" />
+    </Style>
+
+</ResourceDictionary>