BoolToObject Markup Extension

Overview

The BoolToObject markup extension is a XAML-friendly wrapper around the CommunityToolkit.Maui BoolToObjectConverter. It simplifies converting a bool value into one of two objects, depending on whether the value is true or false.

Unlike the underlying converter, all properties exposed by the markup extension are bindable. This allows values to be supplied through data bindings and ensures the conversion result automatically updates whenever the source value, TrueValue, or FalseValue changes.

Experimental Feature

This feature is experimental and has not been fully tested. Its API and behavior may change in future releases, and you may encounter unexpected issues. Use with caution and thoroughly test it in your own application before relying on it in production.

XAML Namespace

xmlns:sqm="clr-namespace:SQuan.Helpers.Maui;assembly=SQuan.Helpers.Maui"

Fields

Name	Description
FalseValueProperty	Bindable property for FalseValue.
TrueValueProperty	Bindable property for TrueValue.
ValueProperty	Bindable property for Value.

Properties

Name	Description
FalseValue	Gets or sets the false value.
TrueValue	Gets or sets the true value.
Value	Gets or sets the controlling boolean value.

FalseValue Property

Gets or sets the value that will be returned if the controlling boolean value is false.

public object? FalseValue { get; set; }

TrueValue Property

Gets or sets the value that will be returned if the controlling boolean value is true.

public object? TrueObject { get; set; }

Value Property

Gets or sets a controlling boolean value.

public bool Value { get; set; }

Example

<ContentPage
    xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
    xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
    xmlns:sqm="clr-namespace:SQuan.Helpers.Maui;assembly=SQuan.Helpers.Maui">
    <VerticalStackLayout>
        <CheckBox x:Name="chk" />
        <BoxView
            WidthRequest="30"
            HeightRequest="30"
            Color="{sqm:BoolToObject Value={Binding IsChecked,
                                                    x:DataType=CheckBox,
                                                    Source={Reference chk}},
                                     TrueValue={Binding Source=Green},
                                     FalseValue={Binding Source=Red}" />
    </VerticalStackLayout>
</ContentPage>