优化了流程的进行

Library/Ex/FlipflopException.cs

@@ -0,0 +1,16 @@
+using System;
+
+namespace Serein.Library.Ex
+{
+    /// <summary>
+    /// 触发器
+    /// </summary>
+    public class FlipflopException: Exception
+    {
+        public bool IsCancel { get; }
+        public FlipflopException(string message, bool isCancel = true) :base(message) 
+        {
+            IsCancel = isCancel;
+        }
+    }
+}