namespace AntDesignWPF.Converters { using System; using System.Globalization; using System.Windows; using System.Windows.Data; [ValueConversion(typeof(string), typeof(string))] public class ToUpperConverter : IValueConverter { public object Convert(object value, Type targetType, object parameter, CultureInfo culture) { return (value as string)?.ToUpper(); } public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture) { return DependencyProperty.UnsetValue; } } }