wpf简单进度条

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="" d:DesignWidth="" ><Viewbox>
<Grid>
<Border Name="MaxCircle" CornerRadius="" Width="" Height="" Background="White" Opacity="0.2"/><ed:Arc Name="FillArea" ArcThickness="0.02" ArcThicknessUnit="Percent" StartAngle="" EndAngle="" Width="" Height="" Stretch="None" Opacity="0.8" Fill="#86E02D"/>
<Label Name="ShowLabel" Width="" Height="" FontFamily="宋体" FontWeight="Bold" Content="" FontSize="" Foreground="Black" Opacity="0.8" VerticalContentAlignment="Center" HorizontalContentAlignment="Center" />
</Grid>
</Viewbox>
</UserControl>