Trigger

Trigger分类

TriggerMultiTriggerDataTriggerMultiDataTriggerEventTrigger

EventTrigger

指定触发的事件，触发事件之后执行的内容，这里写了两个动画效果

<CheckBox Content="随着鼠标划入划出，长度改变" HorizontalAlignment="Left" Width="70"> <CheckBox.Resources> <Style TargetType="{x:Type CheckBox}"> <Setter Property="Foreground" Value="OrangeRed"></Setter> <Style.Triggers> <!--当鼠标划入，增加长度--> <EventTrigger RoutedEvent="MouseEnter"> <EventTrigger.Actions> <BeginStoryboard> <Storyboard> <!--这里设置了一个动画，持续时间是0.2秒，改变属性为Width，目标数值是200--> <DoubleAnimation Duration="0:0:0.2" Storyboard.TargetProperty="Width" To="200"></DoubleAnimation> </Storyboard> </BeginStoryboard> </EventTrigger.Actions> </EventTrigger> <!--当鼠标划出，减小长度--> <EventTrigger RoutedEvent="MouseLeave"> <EventTrigger.Actions> <BeginStoryboard> <Storyboard> <DoubleAnimation Duration="0:0:0.2" Storyboard.TargetProperty="Width" To="70"></DoubleAnimation> </Storyboard> </BeginStoryboard> </EventTrigger.Actions> </EventTrigger> </Style.Triggers> </Style> </CheckBox.Resources> </CheckBox>

Trigger

<Grid> <Grid.Resources> <Style x:Key="ButtonStyle" TargetType="Button"> <Setter Property="Foreground" Value="DarkOrange"></Setter> <Style.Triggers> <Trigger Property="IsMouseOver" Value="True"> <Setter Property="Foreground" Value="DarkRed"></Setter> </Trigger> </Style.Triggers> </Style> </Grid.Resources> <Button Content="鼠标滑过时，修改字体颜色" Style="{StaticResource ButtonStyle}"></Button> </Grid>

DataTrigger

根据值，设置对应的效果这里设置的是行头和单元格的效果，也可以设置为其他属性

<Window.Resources> <!--单元格的样式--> <Style TargetType="DataGridCell" x:Key="ColorCell"> <Style.Triggers> <DataTrigger Binding="{Binding Type}" Value="0"> <Setter Property="Background" Value="Pink"></Setter> </DataTrigger> <DataTrigger Binding="{Binding Type}" Value="1"> <Setter Property="Background" Value="Coral"></Setter> </DataTrigger> <DataTrigger Binding="{Binding Type}" Value="2"> <Setter Property="Background" Value="Crimson"></Setter> </DataTrigger> </Style.Triggers> </Style> </Window.Resources> <Grid> <DataGrid ItemsSource="{Binding }" AutoGenerateColumns="False"> <!--行头的样式--> <DataGrid.RowHeaderStyle> <Style TargetType="DataGridRowHeader"> <Style.Triggers> <DataTrigger Binding="{Binding Type}" Value="0"> <Setter Property="Background" Value="Pink"></Setter> </DataTrigger> <DataTrigger Binding="{Binding Type}" Value="1"> <Setter Property="Background" Value="Coral"></Setter> </DataTrigger> <DataTrigger Binding="{Binding Type}" Value="2"> <Setter Property="Background" Value="Crimson"></Setter> </DataTrigger> </Style.Triggers> </Style> </DataGrid.RowHeaderStyle> <DataGrid.Columns> <DataGridTextColumn Header="Type值" Width="*" Binding="{Binding TypeValue}"/> <DataGridTextColumn Header="Type效果" Width="*" Binding="{Binding Type}" CellStyle="{StaticResource ColorCell}"/> </DataGrid.Columns> </DataGrid> </Grid>

效果

 

示例代码

https://github.com/zLulus/NotePractice/tree/dev3/WPF/WpfDemo/Trigger

转载于:https://www.cnblogs.com/Lulus/p/8157822.html