Button的选中Effect，我们看下下面的效果：
让我们再放大一点：
怎么设置上面样式呢？直接设置Button的Effect，有点问题，因为Effect不是四周环绕的。那我们也只能重新定义Template了。下面看控件模板：
<ControlTemplate x:Key="LightedBtnTemplate" TargetType="RadioButton"> <Grid> <Grid.RowDefinitions> <RowDefinition Height="5">RowDefinition> <RowDefinition>RowDefinition> <RowDefinition Height="5">RowDefinition> Grid.RowDefinitions> <Grid.ColumnDefinitions> <ColumnDefinition Width="5">ColumnDefinition> <ColumnDefinition>ColumnDefinition> <ColumnDefinition Width="5">ColumnDefinition> Grid.ColumnDefinitions> <Rectangle Grid.Row="1" Grid.Column="1" Fill="{TemplateBinding Background}">Rectangle> <Grid x:Name="Grid_00" Grid.Row="0" Grid.Column="0">Grid> <Grid x:Name="Grid_02" Grid.Row="0" Grid.Column="2">Grid> <Grid x:Name="Grid_20" Grid.Row="2" Grid.Column="0">Grid> <Grid x:Name="Grid_22" Grid.Row="2" Grid.Column="2">Grid> <Grid x:Name="Grid_Top" Grid.Row="0" Grid.Column="1">Grid> <Grid x:Name="Grid_Bottom" Grid.Row="2" Grid.Column="1">Grid> <Grid x:Name="Grid_Left" Grid.Row="1" Grid.Column="0">Grid> <Grid x:Name="Grid_Right" Grid.Row="1" Grid.Column="2">Grid> Grid> <ControlTemplate.Triggers> <Trigger Property="IsChecked" Value="True"> <Setter TargetName="Grid_00" Property="Background"> <Setter.Value> <LinearGradientBrush StartPoint="1,1" EndPoint="0,0"> <GradientStop Color="White" Offset="0">GradientStop> <GradientStop Color="Transparent" Offset="0.5">GradientStop> LinearGradientBrush> Setter.Value> Setter> <Setter TargetName="Grid_02" Property="Background"> <Setter.Value> <LinearGradientBrush StartPoint="0,1" EndPoint="1,0"> <GradientStop Color="White" Offset="0">GradientStop> <GradientStop Color="Transparent" Offset="0.5">GradientStop> LinearGradientBrush> Setter.Value> Setter> <Setter TargetName="Grid_20" Property="Background"> <Setter.Value> <LinearGradientBrush StartPoint="1,0" EndPoint="0,1"> <GradientStop Color="White" Offset="0">GradientStop> <GradientStop Color="Transparent" Offset="0.5">GradientStop> LinearGradientBrush> Setter.Value> Setter> <Setter TargetName="Grid_22" Property="Background"> <Setter.Value> <LinearGradientBrush StartPoint="0,0" EndPoint="1,1"> <GradientStop Color="White" Offset="0">GradientStop> <GradientStop Color="Transparent" Offset="0.5">GradientStop> LinearGradientBrush> Setter.Value> Setter> <Setter TargetName="Grid_Top" Property="Background"> <Setter.Value> <LinearGradientBrush StartPoint="1,1" EndPoint="1,0"> <GradientStop Color="White" Offset="0">GradientStop> <GradientStop Color="Transparent" Offset="1">GradientStop> LinearGradientBrush> Setter.Value> Setter> <Setter TargetName="Grid_Bottom" Property="Background"> <Setter.Value> <LinearGradientBrush StartPoint="1,0" EndPoint="1,1"> <GradientStop Color="White" Offset="0">GradientStop> <GradientStop Color="Transparent" Offset="1">GradientStop> LinearGradientBrush> Setter.Value> Setter> <Setter TargetName="Grid_Left" Property="Background"> <Setter.Value> <LinearGradientBrush StartPoint="1,1" EndPoint="0,1"> <GradientStop Color="White" Offset="0">GradientStop> <GradientStop Color="Transparent" Offset="1">GradientStop> LinearGradientBrush> Setter.Value> Setter> <Setter TargetName="Grid_Right" Property="Background"> <Setter.Value> <LinearGradientBrush StartPoint="0,1" EndPoint="1,1"> <GradientStop Color="White" Offset="0">GradientStop> <GradientStop Color="Transparent" Offset="1">GradientStop> LinearGradientBrush> Setter.Value> Setter> Trigger> ControlTemplate.Triggers> ControlTemplate>
~~~估计你一下就能看懂了，只是用了点小技巧，多加了几个外部元素。
当然这个也是可以设置成自动的，然后在选中的时候，再加宽度和高度，这样就不会影响控件本身的布局。
下面是Demo：
<Window x:Class="WpfApplication13.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="MainWindow" Height="200" Width="525" Background="LightBlue"> <Window.Resources> <ControlTemplate x:Key="LightedBtnTemplate" TargetType="RadioButton"> <Grid> <Grid.RowDefinitions> <RowDefinition Height="5">RowDefinition> <RowDefinition>RowDefinition> <RowDefinition Height="5">RowDefinition> Grid.RowDefinitions> <Grid.ColumnDefinitions> <ColumnDefinition Width="5">ColumnDefinition> <ColumnDefinition>ColumnDefinition> <ColumnDefinition Width="5">ColumnDefinition> Grid.ColumnDefinitions> <Rectangle Grid.Row="1" Grid.Column="1" Fill="{TemplateBinding Background}">Rectangle> <Grid x:Name="Grid_00" Grid.Row="0" Grid.Column="0">Grid> <Grid x:Name="Grid_02" Grid.Row="0" Grid.Column="2">Grid> <Grid x:Name="Grid_20" Grid.Row="2" Grid.Column="0">Grid> <Grid x:Name="Grid_22" Grid.Row="2" Grid.Column="2">Grid> <Grid x:Name="Grid_Top" Grid.Row="0" Grid.Column="1">Grid> <Grid x:Name="Grid_Bottom" Grid.Row="2" Grid.Column="1">Grid> <Grid x:Name="Grid_Left" Grid.Row="1" Grid.Column="0">Grid> <Grid x:Name="Grid_Right" Grid.Row="1" Grid.Column="2">Grid> Grid> <ControlTemplate.Triggers> <Trigger Property="IsChecked" Value="True"> <Setter TargetName="Grid_00" Property="Background"> <Setter.Value> <LinearGradientBrush StartPoint="1,1" EndPoint="0,0"> <GradientStop Color="White" Offset="0">GradientStop> <GradientStop Color="Transparent" Offset="0.5">GradientStop> LinearGradientBrush> Setter.Value> Setter> <Setter TargetName="Grid_02" Property="Background"> <Setter.Value> <LinearGradientBrush StartPoint="0,1" EndPoint="1,0"> <GradientStop Color="White" Offset="0">GradientStop> <GradientStop Color="Transparent" Offset="0.5">GradientStop> LinearGradientBrush> Setter.Value> Setter> <Setter TargetName="Grid_20" Property="Background"> <Setter.Value> <LinearGradientBrush StartPoint="1,0" EndPoint="0,1"> <GradientStop Color="White" Offset="0">GradientStop> <GradientStop Color="Transparent" Offset="0.5">GradientStop> LinearGradientBrush> Setter.Value> Setter> <Setter TargetName="Grid_22" Property="Background"> <Setter.Value> <LinearGradientBrush StartPoint="0,0" EndPoint="1,1"> <GradientStop Color="White" Offset="0">GradientStop> <GradientStop Color="Transparent" Offset="0.5">GradientStop> LinearGradientBrush> Setter.Value> Setter> <Setter TargetName="Grid_Top" Property="Background"> <Setter.Value> <LinearGradientBrush StartPoint="1,1" EndPoint="1,0"> <GradientStop Color="White" Offset="0">GradientStop> <GradientStop Color="Transparent" Offset="1">GradientStop> LinearGradientBrush> Setter.Value> Setter> <Setter TargetName="Grid_Bottom" Property="Background"> <Setter.Value> <LinearGradientBrush StartPoint="1,0" EndPoint="1,1"> <GradientStop Color="White" Offset="0">GradientStop> <GradientStop Color="Transparent" Offset="1">GradientStop> LinearGradientBrush> Setter.Value> Setter> <Setter TargetName="Grid_Left" Property="Background"> <Setter.Value> <LinearGradientBrush StartPoint="1,1" EndPoint="0,1"> <GradientStop Color="White" Offset="0">GradientStop> <GradientStop Color="Transparent" Offset="1">GradientStop> LinearGradientBrush> Setter.Value> Setter> <Setter TargetName="Grid_Right" Property="Background"> <Setter.Value> <LinearGradientBrush StartPoint="0,1" EndPoint="1,1"> <GradientStop Color="White" Offset="0">GradientStop> <GradientStop Color="Transparent" Offset="1">GradientStop> LinearGradientBrush> Setter.Value> Setter> Trigger> ControlTemplate.Triggers> ControlTemplate> Window.Resources> <Grid> <StackPanel Margin="0,5,0,-5"> <RadioButton Height="30" Width="100" Background="DeepSkyBlue" Template="{StaticResource LightedBtnTemplate}">RadioButton> <RadioButton Height="30" Width="100" Background="DeepSkyBlue" IsChecked="True" Template="{StaticResource LightedBtnTemplate}">RadioButton> <RadioButton Height="30" Width="100" Background="DeepSkyBlue" Template="{StaticResource LightedBtnTemplate}">RadioButton> StackPanel> Grid> Window>