using System; using System.Globalization; using System.Windows; using System.Windows.Data; namespace HandyControl.Tools.Converter; public class String2VisibilityReConverter : IValueConverter { public object Convert(object value, Type targetType, object parameter, CultureInfo culture) { return string.IsNullOrEmpty((string) value) ? Visibility.Visible : Visibility.Collapsed; } public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) { return value != null && (Visibility) value == Visibility.Collapsed; } }