如何实现像在XAML下面一个圆形按钮，没有任何外在形象要求。 无需黑线在中间

How to implement a circle button like below one in XAML, no external image required. The black line in the middle is not needed.

推荐答案

这是一个非常快速的方式来做到这一点。它可以通过创建一个TemplatedControl使设计人员能够轻松地改变颜色等性质改变成一种风格，它可以更灵活。

This is a very quick way to do it. It can be changed into a style and it could be made more flexible by creating a TemplatedControl allowing the designer to easily change the colors and other properties.

<Button Width="100"
        Height="100">
    <Button.Template>
        <ControlTemplate TargetType="Button">
            <Grid>
                <Ellipse Stroke="Black"
                         StrokeThickness="2">
                    <Ellipse.Fill>
                        <RadialGradientBrush>
                            <GradientStop Offset="0"
                                          Color="Lime" />
                            <GradientStop Offset="1"
                                          Color="Lime" />
                            <GradientStop Offset="1"
                                          Color="Gold" />
                            <RadialGradientBrush.Transform>
                                <TransformGroup>
                                    <ScaleTransform ScaleY="0.65" />
                                </TransformGroup>
                            </RadialGradientBrush.Transform>
                        </RadialGradientBrush>
                    </Ellipse.Fill>
                </Ellipse>
                <ContentPresenter HorizontalAlignment="Center"
                                  VerticalAlignment="Center"/>
            </Grid>
        </ControlTemplate>
    </Button.Template>
</Button>