How to hide the empty TextBlock?

Question

In the XAML provided below, I don\'t have the value for Phone sometimes. When that happens, the value is missing, but the TextBlock is still occupying the space

Answer 1

Instead of introducing a style just for this, for this sort of thing I tend to prefer using a converter that will handle a null or empty string.

Where StringToVisibilityConverter is defined like this:

[ValueConversion(typeof(string), typeof(Visibility))]
public class StringToVisibilityConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        if (string.IsNullOrEmpty((string)value))
        {
            return Visibility.Collapsed;
        }
        else
        {
            return Visibility.Visible;
        }
    }

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