料盘增加通过穴位的索引获取穴位

Rs.Controls/RsTray.cs

@@ -108,6 +108,21 @@ namespace Rs.Controls
             return null;
         }
 
+        /// <summary>
+        /// 通过穴位的索引获取穴位
+        /// </summary>
+        /// <param name="slotIndex"></param>
+        /// <returns></returns>
+        public TraySlot GetSlot(int slotIndex)
+        {
+            foreach (KeyValuePair<int, TraySlot> kv in traySlotsDic)
+            {
+                if (kv.Key == slotIndex)
+                    return kv.Value;
+            }
+            return null;
+        }
+
         public bool CanDraw { get; set; } = true;
         private Dictionary<int, TraySlot> traySlotsDic = new Dictionary<int, TraySlot>();