How can I create a custom type converter in .NET MAUI?

To create a custom type converter, you need to implement the IValueConverter class and override the Convert and ConvertBack methods. Here’s an example in XAML:

XAML

<ContentPage.Resources>
	<local:IntToBoolConverter x:Key="intToBool" />
</ContentPage.Resources>

    <StackLayout Padding="10, 0">
        <Entry  x:Name="entry1"
                Text=""
                Placeholder="enter search term"
                VerticalOptions="Center" />
        <Button Text="Search"
                HorizontalOptions="Center"
                VerticalOptions="Center"
                IsEnabled="{Binding Source={x:Reference entry1},
                Path=Text.Length,
                Converter={StaticResource intToBool}}" />        
    </StackLayout>

C#

public class IntToBoolConverter : IValueConverter 
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture) 
	{
		return (int)value != 0;
	}

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) 
	{
		return (bool)value ? 1 : 0;
	}
}