XAML中Button重绘为圆形

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？

 

<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>