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AIStudio.Wpf.DiagramDesigner/Converters/AditionConverter.cs

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+using System;
+using System.Globalization;
+using System.Windows.Data;
+
+namespace AIStudio.Wpf.DiagramDesigner
+{
+    public class AdditionConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            if ((value != null) && (parameter != null))
+            {
+                var firstValue = (double)value;
+                var secondValue = double.Parse(parameter?.ToString());
+
+                return firstValue + secondValue;
+            }
+
+            return 0d;
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}