WPF: Display a bool value as “Yes” / “No”

Question

I have a bool value that I need to display as \"Yes\" or \"No\" in a TextBlock. I am trying to do this with a StringFormat, but my StringFormat is ignored and the TextBlock

Answer 1

This is another alternative simplified converter with "hard-coded" Yes/No values

[ValueConversion(typeof (bool), typeof (bool))]
public class YesNoBoolConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        var boolValue = value is bool && (bool) value;

        return boolValue ? "Yes" : "No";
    }

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    {
        return value != null && value.ToString() == "Yes";
    }
}

XAML Usage