agrobot_base/AgroBase/OperationControl/Converters/MainWindow.cs

using System.Globalization;
using System.Windows.Data;

namespace OperationControl.Converters
{
    public class NullToVisibilityConverter : IValueConverter
    {
        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
            => value == null ? System.Windows.Visibility.Collapsed : System.Windows.Visibility.Visible;

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