String Has Value Converter

StringHasValueConverter.cs

public class StringHasValueConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
            if (value == null) return false;
            return !string.IsNullOrEmpty(value.ToString());
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }
    }