首先在XAML中定义一个Button按钮
<Button Margin="155,39,171,10" Content="圆角矩形控件" Foreground="White" Template="{StaticResource ButtonTemplate}"> </Button>
然后在上面写上如下代码
<Window.Resources>
<ControlTemplate x:Key="ButtonTemplate" TargetType="{x:Type Button}">
<Border x:Name="Border" BorderBrush="Blue" BorderThickness="2" CornerRadius="5" Background="Red" TextBlock.Foreground="White">
<ContentPresenter Margin="{TemplateBinding Padding}" HorizontalAlignment="Center" VerticalAlignment="Center"> <!--显示控件的内容-->
</ContentPresenter>
</Border>
<ControlTemplate.Triggers><!--设置触发器-->
<Trigger Property="IsMouseOver" Value="true"><!--鼠标移动到控件上发生的事件-->
<Setter TargetName="Border" Property="Background" Value="DarkBlue"></Setter><!--设置器-->
</Trigger>
<Trigger Property="IsPressed" Value="true"><!--鼠标点击控件上发生的事件-->
<Setter TargetName="Border" Property="Background" Value="Green"></Setter>
<Setter TargetName="Border" Property="BorderBrush" Value="IndianRed"></Setter>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Window.Resources>
效果就可以实现了。