UserControl x:Class="WpfApplication1.UserControl2" 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:ed="http://schemas.microsoft.com/expression/2010/drawing" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:local="clr-namespace:WpfApplication1" mc:Ignorable="d" d:DesignHeight="300" d:DesignWidth="300" > <Viewbox> <Grid> <Border Name="MaxCircle" CornerRadius="500" Width="100" Height="100" Background="White" Opacity="0.2"/> <ed:Arc Name="FillArea" ArcThickness="0.02" ArcThicknessUnit="Percent" StartAngle="0" EndAngle="0" Width="95" Height="95" Stretch="None" Opacity="0.8" Fill="#86E02D"/> <Label Name="ShowLabel" Width="60" Height="60" FontFamily="宋体" FontWeight="Bold" Content="01" FontSize="32" Foreground="Black" Opacity="0.8" VerticalContentAlignment="Center" HorizontalContentAlignment="Center" /> </Grid> </Viewbox> </UserControl>