[C#/WINUI3/COMMUNITY TOOLKIT/.NET8] IsEqualStateTrigger 엘리먼트 : Value/To 속성을 사용해 동일 상태 여부에 따라 처리하기

■ IsEqualStateTrigger 엘리먼트의 Value/To 속성을 사용해 동일 상태 여부에 따라 처리하는 방법을 보여준다.

※ 비주얼 스튜디오에서 TestProject(Unpackaged) 모드로 빌드한다.
※ TestProject.csproj 프로젝트 파일에서 WindowsPackageType 태그를 None으로 추가했다.

▶ MainPage.xaml


<?xml version="1.0" encoding="utf-8"?>
<Page x:Class="TestProject.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:ctw="using:CommunityToolkit.WinUI"
    Background="{ThemeResource ApplicationPageBackgroundThemeBrush}"
    FontFamily="나눔고딕코딩"
    FontSize="16">
    <Grid>
        <VisualStateManager.VisualStateGroups>
            <VisualStateGroup>
                <VisualState x:Name="checkstate">
                    <VisualState.StateTriggers>
                        <ctw:IsEqualStateTrigger
                            Value="{Binding IsChecked, ElementName=checkBox, Mode=OneWay}"
                            To="{x:Null}" />
                    </VisualState.StateTriggers>
                    <VisualState.Setters>
                        <Setter
                            Target="checkStatusRun.Text"
                            Value="indeterminate" />
                    </VisualState.Setters>
                </VisualState>
            </VisualStateGroup>
            <VisualStateGroup>
                <VisualState x:Name="sliderstate">
                    <VisualState.StateTriggers>
                        <ctw:IsEqualStateTrigger
                            Value="{Binding Value, ElementName=slider, Mode=OneWay}"
                            To="0" />
                    </VisualState.StateTriggers>
                    <VisualState.Setters>
                        <Setter
                            Target="sliderStatusRun.Text"
                            Value="0" />
                    </VisualState.Setters>
                </VisualState>
            </VisualStateGroup>
        </VisualStateManager.VisualStateGroups>
        <StackPanel
            HorizontalAlignment="Center"
            VerticalAlignment="Center"
            Width="400">
            <CheckBox Name="checkBox"
                IsThreeState="True"
                Content="Check me"
                IsChecked="True" />
            <TextBlock
                Style="{StaticResource CaptionTextBlockStyle}"
                Margin="0 10 0 0">
                <Run Text="Checkbox value is" />
                <Run x:Name="checkStatusRun"
                    FontWeight="SemiBold"
                    Text="not indeterminate" />
            </TextBlock>
            <Slider Name="slider"
                Margin="0 30 0 0"
                Minimum="0"
                Maximum="5" />
            <TextBlock
                Style="{StaticResource CaptionTextBlockStyle}"
                Margin="0 10 0 0">
                <Run Text="Slider value is" />
                <Run x:Name="sliderStatusRun"
                    FontWeight="SemiBold"
                    Text="more than 0" />
            </TextBlock>
        </StackPanel>
    </Grid>
</Page>

<?xml version="1.0" encoding="utf-8"?>

<Page x:Class="TestProject.MainPage"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:ctw="using:CommunityToolkit.WinUI"

Background="{ThemeResource ApplicationPageBackgroundThemeBrush}"

FontFamily="나눔고딕코딩"

FontSize="16">

<Grid>

<VisualStateManager.VisualStateGroups>

<VisualState.StateTriggers>

<ctw:IsEqualStateTrigger

Value="{Binding IsChecked, ElementName=checkBox, Mode=OneWay}"

To="{x:Null}" />

</VisualState.StateTriggers>

<VisualState.Setters>

<Setter

Target="checkStatusRun.Text"

Value="indeterminate" />

</VisualState.Setters>

</VisualState>

</VisualStateGroup>

<VisualState.StateTriggers>

<ctw:IsEqualStateTrigger

Value="{Binding Value, ElementName=slider, Mode=OneWay}"

To="0" />

</VisualState.StateTriggers>

<VisualState.Setters>

<Setter

Target="sliderStatusRun.Text"

Value="0" />

</VisualState.Setters>

</VisualState>

</VisualStateGroup>

</VisualStateManager.VisualStateGroups>

<StackPanel

HorizontalAlignment="Center"

VerticalAlignment="Center"

Width="400">

<CheckBox Name="checkBox"

IsThreeState="True"

Content="Check me"

IsChecked="True" />

<TextBlock

Style="{StaticResource CaptionTextBlockStyle}"

Margin="0 10 0 0">

<Run x:Name="checkStatusRun"

FontWeight="SemiBold"

Text="not indeterminate" />

</TextBlock>

<Slider Name="slider"

Margin="0 30 0 0"

Minimum="0"

Maximum="5" />

<TextBlock

Style="{StaticResource CaptionTextBlockStyle}"

Margin="0 10 0 0">

<Run x:Name="sliderStatusRun"

FontWeight="SemiBold"

Text="more than 0" />

</TextBlock>

</StackPanel>

</Grid>

</Page>

TestProject.zip