diff --git a/Class/AsyncTcpServer.cs b/Class/AsyncTcpServer.cs
index 41e0c0b..9171850 100644
--- a/Class/AsyncTcpServer.cs
+++ b/Class/AsyncTcpServer.cs
@@ -41,7 +41,7 @@ namespace ForwardingServerUI.Class
                         MainWindowViewModel._machineTable.Rows.Remove(row);
                     });
                 }
-                Console.WriteLine("[" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss:fff") + "] NOT ID " + client.Id + " IP " + client.IP);
+                Console.WriteLine("[" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff") + "] NOT ID " + client.Id + " IP " + client.IP);
 
                 return EasyTask.CompletedTask; };//有客户端正在断开连接，只有当主动断开时才有效。
             service.Closed =  (client, e) => {
@@ -53,7 +53,7 @@ namespace ForwardingServerUI.Class
                         MainWindowViewModel._machineTable.Rows.Remove(row);
                     });
                 }
-                Console.WriteLine("[" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss:fff") + "] NOT ID " + client.Id + " IP " + client.IP);
+                Console.WriteLine("[" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff") + "] NOT ID " + client.Id + " IP " + client.IP);
 
                 return EasyTask.CompletedTask; 
             };//有客户端断开连接
@@ -95,7 +95,7 @@ namespace ForwardingServerUI.Class
                             {
                                 DataRow drEmployee = r_.First();
                                 drEmployee.BeginEdit();
-                                drEmployee["HeartbeatTime"] = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss:fff");
+                                drEmployee["HeartbeatTime"] = DateTime.Now.ToString();
                                 drEmployee.EndEdit();
                                 drEmployee.AcceptChanges();
                             });
@@ -125,10 +125,10 @@ namespace ForwardingServerUI.Class
                                 {
                                     //添加设备信息表
                                     MainWindowViewModel._machineTable.Rows.Add(client.Id, client.IP, 30, "/" + deserializedPerson.SERVEREnterprise,
-                                        deserializedPerson.SERVERMachineName, DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss:fff"), deserializedPerson.MachineVer);
+                                        deserializedPerson.SERVERMachineName, DateTime.Now.ToString(), deserializedPerson.MachineVer);
                                 }
                             });
-                            Console.WriteLine("[" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss:fff") + " [LINK ID " + client.Id + " IP " + client.IP + "]\nDATA =" + DAT);
+                            Console.WriteLine("[" + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss.fff") + " [LINK ID " + client.Id + " IP " + client.IP + "]\nDATA =" + DAT);
 
                         }
                     }
@@ -171,7 +171,7 @@ namespace ForwardingServerUI.Class
                 int rows = MainWindowViewModel._machineTable.Rows.Count;
                 for (int i = rows; i > 0; i--)
                 {
-                    DataRow dataRow = MainWindowViewModel._machineTable.Rows[i];
+                    DataRow dataRow = MainWindowViewModel._machineTable.Rows[i-1];
                     DateTime dateTime = DateTime.Parse(dataRow["HeartbeatTime"].ToString()!);
                     if (DateTime.Now > dateTime.AddSeconds(180))
                     {