缩小窗口时不触发视觉状态答案

【问题标题】：Visual state not firing when reducing window缩小窗口时不触发视觉状态
【发布时间】：2021-01-08 09:48:53
【问题描述】：

我有 3 个视觉状态，带有自适应触发器。当窗户增加时，它们开火良好。但是，如果窗口从最大状态减小到更小状态，setter 将无法正常工作并且元素会将它们的样式重置为默认状态，就像它们没有视觉状态一样。

<Grid x:Name="mainGrid" Style="{StaticResource mainGridStyle}">
        <VisualStateManager.VisualStateGroups>
            <VisualStateGroup x:Name="largeSize">
                <VisualState>
                    <VisualState.StateTriggers>
                        <AdaptiveTrigger MinWindowWidth="1520"/>
                    </VisualState.StateTriggers>
                    <VisualState.Setters>
                        <Setter Target="mainGrid.Background" Value="{StaticResource lgBrush}"/>
                        <Setter Target="LogoImage.Style" Value="{StaticResource lgLogoStyle}"/>
                        <Setter Target="TxbClienForStreaming.FontSize" Value="60"/>
                        <Setter Target="TxbAddText.FontSize" Value="42"/>
                    </VisualState.Setters>
                </VisualState>
            </VisualStateGroup>
            <VisualStateGroup x:Name="mediumSize">
                <VisualState>
                    <VisualState.StateTriggers>
                        <AdaptiveTrigger MinWindowWidth="600"/>
                    </VisualState.StateTriggers>
                    <VisualState.Setters>
                        <Setter Target="mainGrid.Background" Value="{StaticResource mdBrush}"/>
                        <Setter Target="LogoImage.Style" Value="{StaticResource mdLogoStyle}"/>
                        <Setter Target="TxbClienForStreaming.FontSize" Value="45"/>
                        <Setter Target="TxbAddText.FontSize" Value="28"/>
                    </VisualState.Setters>
                </VisualState>
            </VisualStateGroup>
            <VisualStateGroup x:Name="smallSize">
                <VisualState>
                    <VisualState.StateTriggers>
                        <AdaptiveTrigger MinWindowWidth="0"/>
                    </VisualState.StateTriggers>
                    <VisualState.Setters>
                        <Setter Target="mainGrid.Background" Value="{StaticResource smBrush}"/>
                        <Setter Target="TxbClienForStreaming.FontSize" Value="36"/>
                        <Setter Target="TxbAddText.FontSize" Value="24"/>
                        <Setter Target="BtnGetNow.FontSize" Value="34"/>
                    </VisualState.Setters>
                </VisualState>
            </VisualStateGroup>
        </VisualStateManager.VisualStateGroups>

【问题讨论】：

标签： c# uwp visualstates adaptive-layout

【解决方案1】：

缩小窗口时不触发视觉状态

问题是您将三个VisualState 放在不同的组中，请将三个VisualState 整合到一个组中，如下所示。

<VisualStateManager.VisualStateGroups>
    <VisualStateGroup>
        <VisualState x:Name="smallSize">
            <VisualState.StateTriggers>
                <AdaptiveTrigger MinWindowWidth="0" />
            </VisualState.StateTriggers>
            <VisualState.Setters>
                <Setter Target="mainGrid.Background" Value="Red" />
            </VisualState.Setters>
        </VisualState>
        <VisualState x:Name="mediumSize">
            <VisualState.StateTriggers>
                <AdaptiveTrigger MinWindowWidth="665" />
            </VisualState.StateTriggers>
            <VisualState.Setters>
                <Setter Target="mainGrid.Background" Value="Green" />
            </VisualState.Setters>
        </VisualState>
        <VisualState x:Name="largeSize">
            <VisualState.StateTriggers>
                <AdaptiveTrigger MinWindowWidth="1520" />
            </VisualState.StateTriggers>
            <VisualState.Setters>
                <Setter Target="mainGrid.Background" Value="Blue" />
            </VisualState.Setters>
        </VisualState>
    </VisualStateGroup>
</VisualStateManager.VisualStateGroups>

【讨论】：

你是最棒的！