优化了示例工程

Net461DllTest/Enums/PlcState.cs

@@ -0,0 +1,28 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Net461DllTest.Enums
+{
+    public enum PlcState
+    {
+        /// <summary>
+        /// 关机
+        /// </summary>
+        PowerOff,
+        /// <summary>
+        /// 正在运行
+        /// </summary>
+        Runing,
+        /// <summary>
+        /// 发生异常
+        /// </summary>
+        Error,
+        /// <summary>
+        /// 维护中
+        /// </summary>
+        Maintenance,
+    }
+}