准备区分节点、参数、返回值的连接，做个备份

Workbench/Node/Junction/View/ArgJunctionControl.cs

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+using System.Windows;
+using System.Windows.Media;
+using System.Windows.Shapes;
+using Serein.Library;
+
+namespace Serein.Workbench.Node.View
+{
+    public class ArgJunctionControl : JunctionControlBase
+    {
+        public ArgJunctionControl()
+        {
+            base.JunctionType = JunctionType.ArgData;
+            Render();
+        }
+
+        #region 控件属性，对应的参数
+        public static readonly DependencyProperty ArgIndexProperty =
+            DependencyProperty.Register("ArgIndex", typeof(int), typeof(ArgJunctionControl), new PropertyMetadata(default(int)));
+
+        /// <summary>
+        /// 所在的节点
+        /// </summary>
+        public int ArgIndex
+        {
+            get { return (int)GetValue(ArgIndexProperty); }
+            set { SetValue(ArgIndexProperty, value); }
+        }
+        #endregion
+
+        public override void Render()
+        {
+            if(double.IsNaN(base.Width))
+            {
+                base.Width = base._MyWidth;
+            }
+            if (double.IsNaN(base.Height))
+            {
+                base.Height = base._MyHeight;
+            }
+
+
+            var ellipse = new Ellipse
+            {
+                Width = base.Width,
+                Height = base.Height,
+                Fill = Brushes.Orange,
+                ToolTip = "入参"
+            };
+            Content = ellipse;
+        }
+    }
+
+
+}