添加节点可删除

AIStudio.Wpf.DiagramDesigner/Converters/ConectorStyleConverter.cs

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+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Text;
+using System.Windows;
+using System.Windows.Data;
+
+namespace AIStudio.Wpf.DiagramDesigner
+{
+    public class ConectorStyleConverter : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            if (value == null)
+            {
+                if (parameter is Style style)
+                {
+                    return style;
+                }
+                else if (parameter is string str)
+                {
+                    return Application.Current.FindResource(str) as Style;
+                }
+                else
+                {
+                    return Application.Current.FindResource("DefaultConnectorStyle") as Style;
+                }
+            }
+
+            return value;
+        }
+
+        public object ConvertBack(object value, Type targetTypes, object parameter, CultureInfo culture)
+        {
+            return DependencyProperty.UnsetValue;
+        }
+    }
+}