using System; using System.Collections.Generic; using System.Globalization; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows; using System.Windows.Data; using System.Windows.Media; namespace MECF.Framework.UI.Client.CenterViews.Maintain { public class StringNullToUIVisibilityConverter : IValueConverter { public object Convert(object value, Type targetType, object parameter, CultureInfo culture) { if (value is string filepath) { if (string.IsNullOrEmpty(filepath)) return Visibility.Hidden; else { return Visibility.Visible; } } return Visibility.Hidden; } public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) { throw new NotImplementedException(); } } }