[C#/WINUI3/COMMUNITY TOOLKIT/.NET8] EmptyObjectToObjectConverter 엘리먼트 : EmptyValue/NotEmptyValue 속성을 사용해 객체 값→객체 값 변환자 설정하기

■ EmptyObjectToObjectConverter 엘리먼트의 EmptyValue/NotEmptyValue 속성을 사용해 객체 값→객체 값 변환자를 설정하는 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:ctwcv="using:CommunityToolkit.WinUI.Converters"
    Background="{ThemeResource ApplicationPageBackgroundThemeBrush}"
    FontFamily="나눔고딕코딩"
    FontSize="16">
    <Page.Resources>
        <ctwcv:EmptyObjectToObjectConverter x:Key="EmptyObjectToObjectConverterKey"
            EmptyValue="False"
            NotEmptyValue="True" />
    </Page.Resources>
    <StackPanel
        HorizontalAlignment="Center"
        VerticalAlignment="Center"
        Orientation="Horizontal"
        Spacing="10">
        <Button
            Style="{StaticResource AccentButtonStyle}"
            VerticalAlignment="Center"
            Content="Submit"
            IsEnabled="{x:Bind checkBox.IsChecked, Mode=OneWay, Converter={StaticResource EmptyObjectToObjectConverterKey}}" />
        <CheckBox Name="checkBox"
            VerticalAlignment="Center"
            IsThreeState="True" />
    </StackPanel>
</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:ctwcv="using:CommunityToolkit.WinUI.Converters"

Background="{ThemeResource ApplicationPageBackgroundThemeBrush}"

FontFamily="나눔고딕코딩"

FontSize="16">

<Page.Resources>

<ctwcv:EmptyObjectToObjectConverter x:Key="EmptyObjectToObjectConverterKey"

EmptyValue="False"

NotEmptyValue="True" />

</Page.Resources>

<StackPanel

HorizontalAlignment="Center"

VerticalAlignment="Center"

Orientation="Horizontal"

Spacing="10">

<Button

Style="{StaticResource AccentButtonStyle}"

VerticalAlignment="Center"

Content="Submit"

IsEnabled="{x:Bind checkBox.IsChecked, Mode=OneWay, Converter={StaticResource EmptyObjectToObjectConverterKey}}" />

<CheckBox Name="checkBox"

VerticalAlignment="Center"

IsThreeState="True" />

</StackPanel>

</Page>

TestProject.zip