WPF 用 DrawingBrush实现图形的平铺

WPF平铺图像，一般用到 DrawingBrush 来实现对图形、图形的平铺，查阅了 微软官方文档的 DrawingBrush  属性

创建一个 DrawingBrush，其中：

TileMode="Tile"设置了改画刷为平铺的属性

 1 <DrawingBrush x:Key="test" Stretch="None" Viewport="0,0,78,78" ViewportUnits="Absolute" TileMode="Tile">
 2         <DrawingBrush.Drawing>
 3             <DrawingGroup>
 4                 <DrawingGroup.Children>
 5                     <GeometryDrawing>
 6                         <GeometryDrawing.Geometry>
 7                             <RectangleGeometry Rect="0,0,78,78" />
 8                         </GeometryDrawing.Geometry>
 9                         <GeometryDrawing.Pen>
10                             <Pen Brush="{StaticResource GridLineBrush}" Thickness="3"/>
11                         </GeometryDrawing.Pen>
12                     </GeometryDrawing>
13                     <GeometryDrawing>
14                         <GeometryDrawing.Geometry>
15                             <GeometryGroup>
16                                 <LineGeometry StartPoint="0.5,19.5" EndPoint="77.5,19.5" />
17                                 <LineGeometry StartPoint="0.5,39" EndPoint="77.5,39" />
18                                 <LineGeometry StartPoint="0.5,58.5" EndPoint="77.5,58.5" />
19                                 <LineGeometry StartPoint="19.5,0.5" EndPoint="19.5,77.5" />
20                                 <LineGeometry StartPoint="39,0.5" EndPoint="39,77.5" />
21                                 <LineGeometry StartPoint="58.5,0.5" EndPoint="58.5,77.5" />
22                             </GeometryGroup>
23                         </GeometryDrawing.Geometry>
24                         <GeometryDrawing.Pen>
25                             <Pen Brush="{StaticResource GridLineBrush}" Thickness="1"/>
26                         </GeometryDrawing.Pen>
27                     </GeometryDrawing>
28                 </DrawingGroup.Children>
29             </DrawingGroup>
30         </DrawingBrush.Drawing>
31     </DrawingBrush>

画刷会自动适应平铺到窗体一样的大小，效果图如下：