整理整理

AIStudio.Wpf.DiagramDesigner.Additionals/Converters/NullableToBooleanConverter.cs

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+using System;
+using System.Globalization;
+using System.Windows;
+using System.Windows.Data;
+
+namespace AIStudio.Wpf.DiagramDesigner.Additionals.Converters
+{
+    public class NullableToBooleanConverter : IValueConverter
+    {
+        public bool NullValue { get; set; } = false;
+        public bool NotNullValue { get; set; } = true;
+
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return value == null ? NullValue : NotNullValue;
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            return Binding.DoNothing;
+        }
+    }
+}