在用XAML布局的时候，有时候为了使界面Metro化，有些Button要使用圆形代替默认的长方形。以下的Button样式可以解决这个问题，可以根据自己的需要再加以修改。当然如果你熟悉Bland的话可以直接使用它来绘制你需要的样式，但是贴代码是否更快一点呢？

代码如下:

<Style x:Key="btnNext" TargetType="Button">

<Setter Property="Template">

<Setter.Value>

<ControlTemplate TargetType="Button">

<Grid>

<VisualStateManager.VisualStateGroups>

<VisualStateGroup x:Name="CommonStates">

<VisualState x:Name="Pressed">

<Storyboard>

<ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(FrameworkElement.Margin)" Storyboard.TargetName="rectangle">

<DiscreteObjectKeyFrame KeyTime="0">

<DiscreteObjectKeyFrame.Value>

<Thickness>-3</Thickness>

</DiscreteObjectKeyFrame.Value>

</DiscreteObjectKeyFrame>

</ObjectAnimationUsingKeyFrames>

</Storyboard>

</VisualState>

<VisualState x:Name="Normal"/>

<VisualState x:Name="Disabled"/>

<VisualState x:Name="MouseOver"/>

</VisualStateGroup>

<VisualStateGroup x:Name="FocusStates">

<VisualState x:Name="Focused"/>

</VisualStateGroup>

</VisualStateManager.VisualStateGroups>

<Rectangle x:Name="rectangle" RadiusY="25" RadiusX="25" Stroke="Blue" StrokeThickness="4">

</Rectangle>

<ContentPresenter HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>

</Grid>

</ControlTemplate>

</Setter.Value>

</Setter>

<Setter Property="Margin" Value="5"/>

<Setter Property="Width" Value="50"/>

<Setter Property="Height" Value="50"/>

<Setter Property="FontSize" Value="120"/>

<Setter Property="Foreground" Value="White"/>

</Style>

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