[C#/WINUI3/COMMUNITY TOOLKIT/.NET8] TypeToObjectConverter 엘리먼트 : TrueValue/FalseValue/Type 속성을 사용해 문자열→객체 값 변환자 설정하기

■ TypeToObjectConverter 엘리먼트의 TrueValue/FalseValue/Type 속성을 사용해 객체 타입→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>
        <SolidColorBrush x:Key="SolidColorBrushKey1" Color="Green" />
        <SolidColorBrush x:Key="SolidColorBrushKey2" Color="Red"   />
        <ctwcv:TypeToObjectConverter x:Key="TypeToObjectConverterKey"
            TrueValue="{StaticResource SolidColorBrushKey1}"
            FalseValue="{StaticResource SolidColorBrushKey2}"
            Type="x:String" />
    </Page.Resources>
    <StackPanel
        HorizontalAlignment="Center"
        VerticalAlignment="Center"
        Spacing="10">
        <ComboBox Name="comboBox"
            SelectedIndex="0">
            <ComboBoxItem>
                <x:Int32>64</x:Int32>
            </ComboBoxItem>
            <ComboBoxItem>
                <x:Double>44.44</x:Double>
            </ComboBoxItem>
            <ComboBoxItem>I'm a String!</ComboBoxItem>
        </ComboBox>
        <TextBlock
            Foreground="{x:Bind ((ComboBoxItem)comboBox.SelectedItem).Content, Mode=OneWay, Converter={StaticResource TypeToObjectConverterKey}}"
            Text="This text is Green when a string is selected" />
    </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:TypeToObjectConverter x:Key="TypeToObjectConverterKey"

TrueValue="{StaticResource SolidColorBrushKey1}"

FalseValue="{StaticResource SolidColorBrushKey2}"

Type="x:String" />

</Page.Resources>

<StackPanel

HorizontalAlignment="Center"

VerticalAlignment="Center"

Spacing="10">

<ComboBox Name="comboBox"

SelectedIndex="0">

<x:Int32>64</x:Int32>

</ComboBoxItem>

<x:Double>44.44</x:Double>

</ComboBoxItem>

<ComboBoxItem>I'm a String!</ComboBoxItem>

</ComboBox>

<TextBlock

Foreground="{x:Bind ((ComboBoxItem)comboBox.SelectedItem).Content, Mode=OneWay, Converter={StaticResource TypeToObjectConverterKey}}"

Text="This text is Green when a string is selected" />

</StackPanel>

</Page>

TestProject.zip