diff --git a/DM_Weight/App.config b/DM_Weight/App.config
index fe22762..4e54c67 100644
--- a/DM_Weight/App.config
+++ b/DM_Weight/App.config
@@ -3,7 +3,7 @@
   <connectionStrings>
 	<!-- 数据库连接字符串 -->
 	<!--<add name="database" connectionString="server=127.0.0.1;database=wpf_dm_program;userid=root;password=qq1223" />-->
-	<add name="database" connectionString="server=127.0.0.1;port=3306;database=xx_xiangchang2;userid=root;password=root" />
+	<add name="database" connectionString="server=127.0.0.1;port=3306;database=xiangxiang_xianchang;userid=root;password=root" />
   </connectionStrings>
 	<!--<runtime>
 		--><!--配置之后，Appdomain.CurrentDomain.UnhandledException 事件的 IsTerminating 就变成了 false 啦！也就是说，程序并不会因为这次的异常而崩溃退出。--><!--
diff --git a/DM_Weight/Port/PortUtil.cs b/DM_Weight/Port/PortUtil.cs
index 4777f23..2030536 100644
--- a/DM_Weight/Port/PortUtil.cs
+++ b/DM_Weight/Port/PortUtil.cs
@@ -86,7 +86,7 @@ namespace DM_Weight.Port
 
         // 是否正在操作中
         public bool Operate { get; set; }
-        
+
         //冰箱是否正在操作中
         public bool FridgeOperate { get; set; }
 
@@ -187,13 +187,13 @@ namespace DM_Weight.Port
                     int[] r = buffer.Select(it => Convert.ToInt32(it)).ToArray();
 
                     logger.Info($"GetAllDrawerLockState{string.Join(",", r)}");
-                    int[] subArray=new int[8];
-                    for(int i=0;i<8;i++)
+                    int[] subArray = new int[8];
+                    for (int i = 0; i < 8; i++)
                     {
                         subArray[i] = r[2 + i];
                     }
-                    bool state= subArray.All(r => r > 0);
-                    if(state)
+                    bool state = subArray.All(r => r > 0);
+                    if (state)
                     {
                         //抽屉全部关闭
 
@@ -416,7 +416,7 @@ namespace DM_Weight.Port
             }
 
         }
-
+        int i = 10;
         public async void GetDrawerStatus()
         {
             try
@@ -517,6 +517,12 @@ namespace DM_Weight.Port
                             logger.Info($"单支板数量变化【{string.Join(",", Quantitys)}】");
 
                         }
+                        i--;
+                        if (i == 0)
+                        {
+                            SpeakAsync("请关闭抽屉");
+                            i = 10;
+                        }
                         // 继续监听抽屉状态
                         await Task.Delay(200);
                         GetDrawerStatus();
@@ -764,23 +770,23 @@ namespace DM_Weight.Port
             byte[] buffer = new byte[length];
             // try
             // {
-                int _length = 0;
-                DateTime start = DateTime.Now;
-                DateTime end = DateTime.Now;
-                while (_length != length && end.Subtract(start).TotalMilliseconds < timeout)
-                {
-                    _length = serialPort.BytesToRead;
-                    end = DateTime.Now;
-                }
-                if (_length != length)
-                {
-                    throw new TimeoutException($"串口【{serialPort.PortName}】交互超时");
-                }
-                serialPort.Read(buffer, 0, length);
+            int _length = 0;
+            DateTime start = DateTime.Now;
+            DateTime end = DateTime.Now;
+            while (_length != length && end.Subtract(start).TotalMilliseconds < timeout)
+            {
+                _length = serialPort.BytesToRead;
+                end = DateTime.Now;
+            }
+            if (_length != length)
+            {
+                throw new TimeoutException($"串口【{serialPort.PortName}】交互超时");
+            }
+            serialPort.Read(buffer, 0, length);
             // }
             // catch (Exception ex)
             // {
-                // logger.Error($"GetBufferByPort：{ex.Message}");
+            // logger.Error($"GetBufferByPort：{ex.Message}");
             // }
             return buffer;
         }
@@ -1076,7 +1082,7 @@ namespace DM_Weight.Port
             var vlock = 321;
             decimal decolNO = (decimal)ColNo;
             var channel = Convert.ToInt32((DrawerNo * 10 + Math.Ceiling(decolNO % 3)).ToString(), 16);
-            byte[] buffer = new byte[] { 0xaa, (byte)channel, 5,(byte)vlock, 0x00,0x00,0x00,0xee};
+            byte[] buffer = new byte[] { 0xaa, (byte)channel, 5, (byte)vlock, 0x00, 0x00, 0x00, 0xee };
             canBusSerial.Write(buffer, 0, 8);
             await Task.Delay(TimeSpan.FromMilliseconds(20));
         }
@@ -1089,7 +1095,7 @@ namespace DM_Weight.Port
         {
             decimal deColNo = (decimal)ColNo;
             var channel = Convert.ToInt32((DrawerNo * 10 + Math.Ceiling(deColNo / 3)).ToString(), 16);
-            byte[] buffer = new byte[] {0xaa,(byte)channel,2,0,0,0,0,0xee };
+            byte[] buffer = new byte[] { 0xaa, (byte)channel, 2, 0, 0, 0, 0, 0xee };
             canBusSerial.Write(buffer, 0, 8);
             return await GetBufferByPort(canBusSerial, 8);
         }
@@ -1183,7 +1189,7 @@ namespace DM_Weight.Port
             {
 
                 canBusSerial.DiscardInBuffer();
-                int channel = Convert.ToInt32((drawerNo * 10 + colNo).ToString(),16);
+                int channel = Convert.ToInt32((drawerNo * 10 + colNo).ToString(), 16);
                 byte[] buffer = new byte[] { 0xaa, (byte)channel, 6, 0, 0, 0, 0, 0xee };
                 buffer[3] = (byte)(quantity >> 8);
                 buffer[4] = (byte)(quantity & 0xff);
@@ -1232,7 +1238,7 @@ namespace DM_Weight.Port
 
         #region 标签显示屏
         //清屏
-        public void ClearContentMethod(int drawerNo,int colNo)
+        public void ClearContentMethod(int drawerNo, int colNo)
         {
             decimal deColNo = colNo;
             var channel = drawerNo * 10 + Math.Ceiling(deColNo / 3);
@@ -1265,7 +1271,7 @@ namespace DM_Weight.Port
                 logger.Info($"操作发生异常：ex:{ex.Message}");
                 return null;
             }
-           
+
         }
         // 回收箱状态查询
         public async Task<byte[]> CheckRecoverStatus()
@@ -1426,7 +1432,7 @@ namespace DM_Weight.Port
                 });
                 logger.Info($"操作发生异常：ex:{ex.Message},方法名：ClearCount；参数：{DrawerNo}，{ColNo}");
             }
-           
+
         }
 
         public async void SetNumCount(int DrawerNo, int ColNo, int Quantity)
@@ -1457,7 +1463,7 @@ namespace DM_Weight.Port
                 });
                 logger.Info($"操作发生异常：ex:{ex.Message},方法名：SetNumCount；参数：{DrawerNo}，{ColNo},{Quantity}");
             }
-            
+
         }
         #endregion
         /// <summary>
@@ -1507,7 +1513,7 @@ namespace DM_Weight.Port
         {
             try
             {
-                fridgeSerial.DiscardInBuffer(); 
+                fridgeSerial.DiscardInBuffer();
                 byte bAddress;
                 if (iIndex == 1)
                 {
@@ -1546,7 +1552,7 @@ namespace DM_Weight.Port
         {
             try
             {
-                fridgeSerial.DiscardInBuffer(); 
+                fridgeSerial.DiscardInBuffer();
                 byte bAddress;
                 if (iIndex == 1)
                 {
@@ -1622,7 +1628,7 @@ namespace DM_Weight.Port
         /// 冰箱温度设定最小
         /// </summary>
         /// <returns></returns>
-        public async Task FridgeMinSetting(float min,int iIndex)
+        public async Task FridgeMinSetting(float min, int iIndex)
         {
             try
             {
@@ -1661,7 +1667,7 @@ namespace DM_Weight.Port
         /// 冰箱温度设定最大
         /// </summary>
         /// <returns></returns>
-        public async Task FridgeMaxSetting(float max,int iIndex)
+        public async Task FridgeMaxSetting(float max, int iIndex)
         {
             try
             {
@@ -1706,9 +1712,9 @@ namespace DM_Weight.Port
             {
                 fridgeSerial.DiscardInBuffer();
                 byte bAddress;
-                if (iIndex == 1 )
+                if (iIndex == 1)
                 {
-                    bAddress=0x01;
+                    bAddress = 0x01;
                 }
                 else
                 {
@@ -1754,7 +1760,7 @@ namespace DM_Weight.Port
         /// 设置冰箱温度
         /// </summary>
         /// <returns></returns>
-        public async Task<float> SetFridgeTemperature(float temperature,int iIndex)
+        public async Task<float> SetFridgeTemperature(float temperature, int iIndex)
         {
             int tpt = (int)temperature * 10;
             byte Temperature = (byte)(tpt & 0xff);
diff --git a/DM_Weight/ViewModels/HomeWindowViewModel.cs b/DM_Weight/ViewModels/HomeWindowViewModel.cs
index ab6993e..3fa80ad 100644
--- a/DM_Weight/ViewModels/HomeWindowViewModel.cs
+++ b/DM_Weight/ViewModels/HomeWindowViewModel.cs
@@ -145,7 +145,7 @@ namespace DM_Weight.ViewModels
                 //            }
                 //        }
                 //    }
-                    SetProperty(ref _selectedChildMenu, value);
+                SetProperty(ref _selectedChildMenu, value);
                 //}
             }
         }
@@ -172,6 +172,7 @@ namespace DM_Weight.ViewModels
                 SetProperty(ref _selectedMenu, value);
             }
         }
+        PremissionDm? PreSelectedMenu;
         #region 父菜单点击事件
 
         #endregion
@@ -182,6 +183,18 @@ namespace DM_Weight.ViewModels
         }
         private void SelectionMethod()
         {
+
+            if (SelectedMenu != null && SelectedMenu.PremissionName != "退出")
+            {
+                PreSelectedMenu = SelectedMenu;
+            }
+            if (_portUtil.Operate)
+            {
+                if (PreSelectedMenu != null)
+                {
+                    SelectedMenu = PreSelectedMenu;
+                }
+            }
             //SelectedMenu = viewName.SelectedItem as PremissionDm;
             //if (SelectedMenu.PremissionName == "退出")
             //{
@@ -198,7 +211,7 @@ namespace DM_Weight.ViewModels
             //    SelectedChildMenu = SelectedMenu.Children[0];
             //}
             logger.Info("开始进入父菜单");
-            if (SelectedMenu != null && SelectedMenu.PremissionName == "退出")
+            if (SelectedMenu != null && SelectedMenu.PremissionName == "退出" && !_portUtil.Operate)
             {
                 logger.Info($"用户【{Operator?.Nickname}】退出登录");
                 Operator = null;
@@ -424,7 +437,7 @@ namespace DM_Weight.ViewModels
             {
                 string retStr = string.Empty;
                 byte[] data = null;
-                float retT = await _portUtil.GetFridgeTemperature(1); 
+                float retT = await _portUtil.GetFridgeTemperature(1);
                 Thread.Sleep(80);
                 WD = $"恒温冷藏抽屉当前温度：{Math.Round((retT - 1.5), 2)}℃;";
                 if (Convert.ToInt32(ConfigurationManager.AppSettings["hasFridge"]) > 1)
@@ -520,6 +533,7 @@ namespace DM_Weight.ViewModels
             //.ToTree(pd => pd.Children, pd => pd.ParentId, 0);
             PremissionDmList = premissions;
             SelectedMenu = premissions[0];
+            PreSelectedMenu= premissions[0];
             SelectedChildMenu = premissions[0].Children[0];
             _regionManager.RequestNavigate("ContentRegion", premissions[0].Children[0].PremissionPath);
             FindDrawerCount();