WPF形状
- 不设置尺寸则填充满容器
<Window x:Class="项目10.MainWindow"
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:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:sys="clr-namespace:System;assembly=mscorlib"
xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity"
xmlns:custom="clr-namespace:CustomBehaviorsLibrary;assembly=CustomBehaviorsLibrary"
xmlns:local="clr-namespace:项目10"
mc:Ignorable="d"
Title="MainWindow" Width="500" Height="400" WindowStartupLocation="CenterScreen">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="*"></RowDefinition>
<RowDefinition Height="*"></RowDefinition>
</Grid.RowDefinitions>
<Rectangle Margin="15" Stroke="Black" RadiusX="15" RadiusY="15"></Rectangle>
<Ellipse Grid.Row="1" Margin="15" Fill="Red" Stretch="Fill"></Ellipse>
</Grid>
</Window>

- 使用Canvas可以缩放图形
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="*"></RowDefinition>
<RowDefinition Height="*"></RowDefinition>
</Grid.RowDefinitions>
<TextBlock>The First row of Grid</TextBlock>
<Viewbox Grid.Row="1" HorizontalAlignment="Left">
<Canvas Height="200" Width="450">
<Ellipse Fill="Yellow" Stretch="Fill" Stroke="Blue" Canvas.Left="10" Canvas.Top="50"
Height="100" Width="150" HorizontalAlignment="Left"/>
<Rectangle Stroke="Red" Width="250" Height="150" HorizontalAlignment="Right"
Canvas.Right="25" Canvas.Bottom="10"/>
</Canvas>
</Viewbox>
</Grid>


- 直线、多段线和多边形
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="*"></RowDefinition>
<RowDefinition Height="3*"></RowDefinition>
</Grid.RowDefinitions>
<TextBlock>The First row of Grid</TextBlock>
<Viewbox Grid.Row="1" HorizontalAlignment="Left">
<Canvas Height="200" Width="450">
<Line Stroke="Red" X1="15" Y1="15" X2="65" Y2="15" Canvas.Left="56"></Line>
<Polyline Stroke="Blue" Points="5,5 150,200 20,180 5,5"></Polyline>
<Polygon Points="5,5 150,200 20,180" Canvas.Left="250" Fill="Pink"></Polygon>
</Canvas>
</Viewbox>
</Grid>

- 画笔的一些属性
StrokeThickness
设置画笔的宽度
StrokeStartLineCap
设置画笔起点形状
StrokeEndLineCap
设置画笔终点形状
StrokeDashArray="3 2"
设置为虚线,3表示直线部分,2表示虚线部分
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="*"></RowDefinition>
<RowDefinition Height="3*"></RowDefinition>
</Grid.RowDefinitions>
<TextBlock>The First row of Grid</TextBlock>
<Viewbox Grid.Row="1" HorizontalAlignment="Left">
<Canvas Height="200" Width="450">
<Line StrokeThickness="5" StrokeEndLineCap="Triangle" StrokeStartLineCap="Round" Stroke="Red" X1="15" Y1="15" X2="65" Y2="15" Canvas.Left="56"></Line>
<Polyline StrokeThickness="5" StrokeDashArray="3 2" Stroke="Blue" Points="5,5 150,200 20,180 5,5"></Polyline>
<Polygon Points="5,5 150,200 20,180" Canvas.Left="250" Fill="Pink"></Polygon>
</Canvas>
</Viewbox>
</Grid>
