添加项目文件。

OrpaonEMS.Model/MasterSlave/EMSServerConState.cs

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+using Prism.Mvvm;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Timers;
+
+namespace OrpaonEMS.Model.MasterSlave
+{
+    public class EMSServerConState:BindableBase
+    {
+        /// <summary>
+        /// 声明委托对象-判定跟EMS连接失败时触发事件
+        /// </summary>
+        public event EventHandler<EMSConErrEventArgs> EMSServerConErrEventHandler;
+
+        /// <summary>
+        /// 周期读取定时器
+        /// 周期发送到SignaIR Hub中
+        /// </summary>
+        private System.Timers.Timer? timer { get; set; }
+
+        public EMSServerConState()
+        {
+            timer = new System.Timers.Timer(1000);
+            timer.Elapsed -= CycleCheck;
+            timer.Elapsed += CycleCheck;
+            timer.AutoReset = true;
+            timer.Enabled = true;
+        }
+
+        /// <summary>
+        /// 循环判定连接状态
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="e"></param>
+        /// <exception cref="NotImplementedException"></exception>
+        private void CycleCheck(object? sender, ElapsedEventArgs e)
+        {
+            timer.Enabled = false;
+
+            //连接状态出错，立刻停止
+            if (!ServerState)
+            {
+                Msg = "连接出现错误";
+                ConResult = false;
+                //EMSServerConErrEventHandler(this, new EMSConErrEventArgs() { Msg = "连接出现错误" });
+                timer.Enabled = true;
+                return;
+            }
+
+            if (ServerSendState == false || TimeIsOk(ServerSendTime) == false)
+            {
+                Msg = "发送数据出现错误";
+                ConResult = false;
+                //EMSServerConErrEventHandler(this, new EMSConErrEventArgs() { Msg = "发送数据出现错误" });
+                timer.Enabled = true;
+                return;
+            }
+
+            if (ServerRecvState == false || TimeIsOk(ServerRecvTime) == false)
+            {
+                Msg = "接受数据出现错误";
+                ConResult = false;
+                //EMSServerConErrEventHandler(this, new EMSConErrEventArgs() { Msg = "接受数据出现错误" });
+                timer.Enabled = true;
+                return;
+            }
+
+            Msg = "";
+            ConResult = true;
+            timer.Enabled = true;
+        }
+
+        /// <summary>
+        /// 通信的消息
+        /// </summary>
+        private string Msg { get; set; } = string.Empty;
+
+        private bool _ConResult = true;
+        /// <summary>
+        /// 整体的通信状态结果
+        /// </summary>
+        public bool ConResult
+        {
+            get { return _ConResult; }
+            set
+            {
+
+                //if (_ConResult != value)//触发一次
+                //{
+                //    //暂时的逻辑不需要触发事件了，由外部的函数获取这个状态判断信息
+                //    //EMSServerConErrEventHandler(this, new EMSConErrEventArgs() { Msg = Msg, Result = value });
+                //    _ConResult = value;
+                //}
+                //Console.WriteLine($"{DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss:fff")} -通信结果：{value}");
+                _ConResult = value;
+            }
+        }
+
+
+        private bool _ServerState;
+        /// <summary>
+        /// 通信连接状态
+        /// 来自通信的事件触发方法
+        /// </summary>
+        public bool ServerState
+        {
+            get { return _ServerState; }
+            set { _ServerState = value; }
+        }
+
+
+        private bool _ServerSendState;
+        /// <summary>
+        /// Server 发送数据的状态
+        /// </summary>
+        public bool ServerSendState
+        {
+            get { return _ServerSendState; }
+            set
+            {
+                _ServerSendState = value;
+                ServerSendTime = DateTime.Now;
+                if (value)
+                {
+                    ServerSendStateMsg = "正常";
+                }
+                else
+                {
+                    ServerSendStateMsg = "失败";
+                }
+            }
+        }
+
+        private string _ServerSendStateMsg = "失败";
+        /// <summary>
+        /// Server 发送数据的状态 消息
+        /// </summary>
+        public string ServerSendStateMsg
+        {
+            get { return _ServerSendStateMsg; }
+            set { _ServerSendStateMsg = value;RaisePropertyChanged(); }
+        }
+
+
+        /// <summary>
+        /// 发送数据的时间
+        /// </summary>
+        private DateTime ServerSendTime { get; set; } = DateTime.Now;
+
+
+        private bool _ServerRecvState;
+        /// <summary>
+        /// Server 接受数据的状态
+        /// </summary>
+        public bool ServerRecvState
+        {
+            get { return _ServerRecvState; }
+            set
+            {
+                _ServerRecvState = value;
+                ServerRecvTime = DateTime.Now;
+                if (value)
+                {
+                    ServerRecvStateMsg = "正常";
+                }
+                else
+                {
+                    ServerRecvStateMsg = "失败";
+                }
+            }
+        }
+
+
+        private string _ServerRecvStateMsg = "失败";
+        /// <summary>
+        ///  Server 接受数据的状态  消息
+        /// </summary>
+        public string ServerRecvStateMsg
+        {
+            get { return _ServerRecvStateMsg; }
+            set { _ServerRecvStateMsg = value; RaisePropertyChanged(); }
+        }
+
+        /// <summary>
+        ///接受数据的时间
+        /// </summary>
+        private DateTime ServerRecvTime { get; set; } = DateTime.Now;
+
+        /// <summary>
+        /// 判断时间是否OK
+        /// 基于现在的时间
+        /// </summary>
+        /// <returns></returns>
+        private bool TimeIsOk(DateTime dateTime)
+        {
+            //大于1秒代表通信失败
+            if ((DateTime.Now - dateTime).TotalSeconds > 2)
+            {
+                return false;
+            }
+            return true;
+        }
+
+
+    }
+}