樣式：封裝一系列屬性的集合，如外邊距、內邊距、顏色、字體等。
①一般在設置樣式時都要指明TargeType屬性，否則用Setter設置屬性時會非常麻煩，比如必須寫Button.FontSize或TextBlock.FontFamily等。
②若定義樣式的時候不使用x:Key鍵名，則TargeType屬性就會作為自動應用樣式的快捷鍵。
③樣式的鍵名有兩種寫法，它倆是等效的：x:Key="{x:Type Button}"和x:Key="Button"
④通過設置元素的Style="{x:Null}"，可以刪除自動應用的樣式。
下面列舉三個個樣式的實例代碼：
屬性觸發器例子：
<Window x:Class="Styles.SimpleTriggers" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/PResentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="SimpleTriggers" Height="300" Width="300" > <Window.Resources> <Style x:Key="BigFontButton"> <Style.Setters> <Setter Property="Control.FontFamily" Value="Times New Roman" /> <Setter Property="Control.FontSize" Value="18" /> </Style.Setters> <Style.Triggers> <Trigger Property="Control.IsFocused" Value="True"> <Setter Property="Control.Foreground" Value="DarkRed" /> </Trigger> <Trigger Property="Control.IsMouSEOver" Value="True"> <Setter Property="Control.Foreground" Value="LightYellow" /> <Setter Property="Control.FontWeight" Value="Bold" /> </Trigger> <Trigger Property="Button.IsPressed" Value="True"> <Setter Property="Control.Foreground" Value="Red" /> </Trigger> </Style.Triggers> </Style> </Window.Resources> <StackPanel Margin="5"> <Button Padding="5" Margin="5" Style="{StaticResource BigFontButton}" >A Customized Button</Button> <TextBlock Margin="5">Normal Content.</TextBlock> <Button Padding="5" Margin="5">A Normal Button</Button> <TextBlock Margin="5">More normal Content.</TextBlock> <Button Padding="5" Margin="5" Style="{StaticResource BigFontButton}">Another Customized Button</Button> </StackPanel></Window>事件觸發器例子：
<Window x:Class="Styles.EventTriggers" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="EventTriggers" Height="300" Width="300" > <Window.Resources> <Style x:Key="BigFontButton"> <Style.Setters> <Setter Property="Control.FontFamily" Value="Times New Roman" /> <Setter Property="Control.FontSize" Value="18" /> <Setter Property="Control.FontWeight" Value="Bold" /> </Style.Setters> <Style.Triggers> <EventTrigger RoutedEvent="Mouse.MouseEnter"> <EventTrigger.Actions> <BeginStoryboard> <Storyboard> <DoubleAnimation Duration="0:0:0.2" Storyboard.TargetProperty="FontSize" To="22" /> </Storyboard> </BeginStoryboard> </EventTrigger.Actions> </EventTrigger> <EventTrigger RoutedEvent="Mouse.MouseLeave"> <EventTrigger.Actions> <BeginStoryboard> <Storyboard> <DoubleAnimation Duration="0:0:1" Storyboard.TargetProperty="FontSize" /> </Storyboard> </BeginStoryboard> </EventTrigger.Actions> </EventTrigger> </Style.Triggers> </Style> </Window.Resources> <StackPanel Margin="5"> <Button Padding="5" Margin="5" Style="{StaticResource BigFontButton}">A Customized Button</Button> <TextBlock Margin="5">Normal Content.</TextBlock> <Button Padding="5" Margin="5">A Normal Button</Button> <TextBlock Margin="5">More normal Content.</TextBlock> <Button Padding="5" Margin="5" Style="{StaticResource BigFontButton}">Another Customized Button</Button> </StackPanel></Window>自動應用樣式例子：<Window x:Class="Styles.AutomaticStyles" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="AutomaticStyles" Height="300" Width="300" > <Window.Resources> <Style TargetType="Button"> <Setter Property="FontFamily" Value="Times New Roman" /> <Setter Property="FontSize" Value="18" /> <Setter Property="FontWeight" Value="Bold" /> </Style> </Window.Resources> <StackPanel Margin="5"> <Button Padding="5" Margin="5">Customized Button</Button> <TextBlock Margin="5">Normal Content.</TextBlock> <Button Padding="5" Margin="5" Style="{x:Null}" >A Normal Button</Button> <TextBlock Margin="5">More normal Content.</TextBlock> <Button Padding="5" Margin="5">Another Customized Button</Button> </StackPanel></Window>
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