您可以将OrientationStateTrigger与VisualStateManager一起使用，下面是一个示例：

<Grid>
     <VisualStateManager.VisualStateGroups>
          <VisualStateGroup>
               <VisualState
                    x:Name="Landscape">
                    <VisualState.StateTriggers>
                         <OrientationStateTrigger Orientation="Landscape" />
                    </VisualState.StateTriggers>
                    <VisualState.Setters>
                         <Setter Property="BackgroundColor" Value="Blue" />
                    </VisualState.Setters>
               </VisualState>
               <VisualState
                    x:Name="Portrait">
                    <VisualState.StateTriggers>
                         <OrientationStateTrigger Orientation="Portrait" />
                    </VisualState.StateTriggers>
                    <VisualState.Setters>
                         <Setter Property="BackgroundColor" Value="Red" />
                    </VisualState.Setters>
                </VisualState>
           </VisualStateGroup>
      </VisualStateManager.VisualStateGroups> 
</Grid>

Source

• • 编辑**

样式中的VisualStateManager，与OnIdiom组合

<Style TargetType="Grid" x:Key="DocType">
    <Setter Property="HeightRequest">
        <Setter.Value>
            <OnIdiom Phone="50" Tablet="80" />
        </Setter.Value>
    </Setter>
    
    <Setter Property="VisualStateManager.VisualStateGroups">
        <VisualStateGroupList>
            <VisualStateGroup>
               <VisualState x:Name="Landscape">
                    <VisualState.StateTriggers>
                         <OrientationStateTrigger Orientation="Landscape" />
                    </VisualState.StateTriggers>
                    <VisualState.Setters>
                                    <Setter Property="BackgroundColor">
                                        <Setter.Value>
                                            <OnIdiom Phone="Blue" Tablet="Green" />
                                        </Setter.Value>
                                    </Setter>
                    </VisualState.Setters>
               </VisualState>
               
               <VisualState x:Name="Portrait">
                    <VisualState.StateTriggers>
                         <OrientationStateTrigger Orientation="Portrait" />
                    </VisualState.StateTriggers>
                    <VisualState.Setters>
                                    <Setter Property="BackgroundColor">
                                        <Setter.Value>
                                            <OnIdiom Phone="Yellow" Tablet="Purple" />
                                        </Setter.Value>
                                    </Setter>
                    </VisualState.Setters>
                </VisualState>
           </VisualStateGroup>
        </VisualStateGroupList>
    </Setter>
</Style>

在这个例子中：
| 众数|片剂|电话|
| - ------|- ------|- ------|
| * * 横向**|绿色|蓝色|
| * * 肖像**|紫色|黄色|