WPF三种基本触发器与【与或】逻辑触发器

wpf中的触发器是应用于程序界面模板、样式、皮肤、主题的基础。以下作为学习的记录。

1，三种基本触发器，属性触发器、数据触发器、事件触发器

属性触发器

         <!--属性触发器-->
         <TextBox TextWrapping="Wrap" Margin="5">
             <TextBox.Style>
                 <Style TargetType="TextBox">
                     <Style.Triggers>
                         <Trigger Property="Text" Value="text">
                             <Setter Property="Background" Value="Aqua"></Setter>
                         </Trigger>
                     </Style.Triggers>
                 </Style>
             </TextBox.Style>
         </TextBox>

数据触发器

         <!--数据触发器-->
         <TextBox TextWrapping="Wrap" Margin="5">
             <TextBox.Style>
                 <Style TargetType="TextBox">
                     <Style.Triggers>
                         <DataTrigger Binding="{Binding RelativeSource={RelativeSource Mode=Self},Path=Text}" Value="text">
                             <Setter Property="Background" Value="Red"></Setter>
                         </DataTrigger>
                     </Style.Triggers>
                 </Style>
             </TextBox.Style>
         </TextBox>

事件触发器

  <!--事件触发器-->
     <Window.Resources>
         <PathGeometry x:Key="ellipse">
             <PathFigure IsClosed="True" StartPoint="0,50">
                 <ArcSegment Size="50,000" Point="100,50" SweepDirection="Clockwise"></ArcSegment>
             </PathFigure>
         </PathGeometry>
     </Window.Resources>
     <Canvas>
         <Rectangle Name="rect" Canvas.Top="0" Canvas.Left="30" Height="30" Fill="Red"></Rectangle>
     </Canvas>
     <Window.Triggers>
         <EventTrigger RoutedEvent="Window.Loaded">
             <BeginStoryboard>
                 <Storyboard BeginTime="0:0:0" RepeatBehavior="Forever">
                     <DoubleAnimationUsingPath Storyboard.TargetName="rect"
                                               Storyboard.TargetProperty="Width"
                                               PathGeometry="{StaticResource ResourceKey=ellipse}"
                                               Source="X" Duration="0:0:10"></DoubleAnimationUsingPath>
                 </Storyboard>
             </BeginStoryboard>
         </EventTrigger>
     </Window.Triggers>

2，两种逻辑触发器，与逻辑触发器、或逻辑触发器

-->

与逻辑触发器

 <!--或逻辑触发器-->
     <Button Content="press me" Width="150" Height="60">
         <Button.Style>
             <Style TargetType="{x:Type Button}">
                 <Style.Triggers>
                     <Trigger Property="Button.IsMouseOver" Value="True">
                         <Setter Property="Button.Foreground" Value="Blue"></Setter>
                     </Trigger>
                     <Trigger Property="Button.IsPressed" Value="True">
                         <Setter Property="Button.Foreground" Value="Red"></Setter>
                     </Trigger>
                 </Style.Triggers>
             </Style>
         </Button.Style>
     </Button>

或逻辑触发器

-->

 <!--与逻辑触发器-->
     <TextBox TextWrapping="Wrap" Margin="5">
         <TextBox.Style>
             <Style TargetType="TextBox">
                 <Style.Triggers>
                     <MultiTrigger>
                         <MultiTrigger.Conditions>
                             <Condition Property="Text" Value="text"></Condition>
                             <Condition Property="IsMouseOver" Value="True"></Condition>
                         </MultiTrigger.Conditions>
                         <Setter Property="Foreground" Value="Aqua"></Setter>
                     </MultiTrigger>
                 </Style.Triggers>
             </Style>
         </TextBox.Style>
     </TextBox>