Initial Push

uniper_hmi/UniperHMI/DateTimeToEventTimeConverter.cs

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+using System.Globalization;
+using System.Windows;
+using System.Windows.Data;
+
+namespace UniperHMI
+{
+    public class DateTimeToEventTimeConverter : IValueConverter
+    {
+        // 599264352000000000 ticks is a date used by beckhoff for events that didnt happen up to this point
+        public const long NoTime = 599264352000000000;
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            if (value is DateTime dt)
+            {
+                
+                if (dt.Ticks == NoTime)
+                    return "";
+                else
+                {
+                    CultureInfo cultureInfo = CultureInfo.CurrentCulture;
+                    return dt.ToString("G", cultureInfo);
+                }
+            }
+            else
+                throw new InvalidOperationException("Target must be of type DateTime");
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return DependencyProperty.UnsetValue;
+        }
+    }
+}