转帖链接：https://www.itsvse.com/thread-3348-1-1.html

新建Style.xaml,将一下代码填入，xmlns:local改为自己的

1. <ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
2. xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
3. xmlns:local="clr-namespace:WpfTest">
4. <Style x:Key="RoundedGelButton" TargetType="Button">
5. <Setter Property="Width" Value="100"/>
6. <Setter Property="Height" Value="100"/>
7. <Setter Property="Foreground" Value="White"/>
8. <Setter Property="Template">
9. <Setter.Value>
10. <ControlTemplate TargetType="{x:Type Button}">
11. <Grid>
12. <Ellipse Name="GelBackground" StrokeThickness="0.5" Fill="Black">
13. <Ellipse.Stroke>
14. <LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
15. <GradientStop Offset="0" Color="#ff7e7e7e"></GradientStop>
16. <GradientStop Offset="1" Color="Black"></GradientStop>
17. </LinearGradientBrush>
18. </Ellipse.Stroke>
19. </Ellipse>
20. <Ellipse Margin="15,5,15,50">
21. <Ellipse.Fill>
22. <LinearGradientBrush StartPoint="0,0" EndPoint="0,1">
23. <GradientStop Offset="0" Color="#aaffffff"></GradientStop>
24. <GradientStop Offset="1" Color="Transparent"></GradientStop>
25. </LinearGradientBrush>
26. </Ellipse.Fill>
27. </Ellipse>
28. <ContentPresenter Name="GelButtonContent" VerticalAlignment="Center" HorizontalAlignment="Center"
29. Content="{TemplateBinding Content}"/>
30. </Grid>
31. <ControlTemplate.Triggers>
32. <Trigger Property="IsMouseOver" Value="True">
33. <Setter Property="Ellipse.Fill" TargetName="GelBackground">
34. <Setter.Value>
35. <RadialGradientBrush>
36. <GradientStop Offset="0" Color="Lime"></GradientStop>
37. <GradientStop Offset="1" Color="DarkGreen"></GradientStop>
38. </RadialGradientBrush>
39. </Setter.Value>
40. </Setter>
41. </Trigger>
42. <Trigger Property="IsPressed" Value="True">
43. <Setter Property="Ellipse.Fill" TargetName="GelBackground">
44. <Setter.Value>
45. <RadialGradientBrush>
46. <GradientStop Offset="0" Color="#ffcc34"></GradientStop>
47. <GradientStop Offset="1" Color="#cc9900"></GradientStop>
48. </RadialGradientBrush>
49. </Setter.Value>
50. </Setter>
51. </Trigger>
52. </ControlTemplate.Triggers>
53. </ControlTemplate>
54. </Setter.Value>
55. </Setter>
56. </Style>
57. </ResourceDictionary>

在App.xmal文件中添加此资源文件

ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <ResourceDictionary Source="Style.xaml"/>
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>

在界面中使用

<Button Style="{StaticResource RoundedGelButton}" Content="Click Me!"></Button>