public bool ErrorLog(string ConnectionId, string ErrorMsg)
        {
            bool resultLog = false;

            try
            {
                if (!string.IsNullOrEmpty(ConnectionId) && !string.IsNullOrEmpty(ErrorMsg))
                {
                    using (var db = new LicensingEntities())
                    {
                        Guid connectionID = Guid.Parse(ConnectionId);

                        var connectionItems = db.Connection.Where(id => id.ConnectionID == connectionID);

                        if (connectionItems.Count() > 0)
                        {
                            var connectionItem = connectionItems.First();

                            connectionItem.ErrorLog = ErrorMsg;

                            db.SaveChanges();

                            resultLog = true;
                        }
                        else
                        {
                             var waitConnections = db.WaitConnection.Where(con => con.ConnectionID == connectionID);
                             if (waitConnections.Count() > 0)
                             {
                                 var waitConnectionItem = waitConnections.First();
                                 waitConnectionItem.ErrorLog = ErrorMsg;
                                 db.SaveChanges();

                                 resultLog = true;
                             }
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                resultLog = false;
                System.Diagnostics.Debug.WriteLine(ex);
            }
            finally
            {
                GC.Collect();
                GC.WaitForPendingFinalizers();
            }

            return resultLog;
        }
        public bool IsConnectionStop(string ConnectionId)
        {
            bool result = false;

            try
            {
                if (!string.IsNullOrEmpty(ConnectionId))
                {
                    Guid connection = Guid.Parse(ConnectionId);

                    using (var db = new LicensingEntities())
                    {
                        var Connections = db.Connection.Where(con => con.ConnectionID == connection);

                        if (Connections.Count() > 0)
                        {
                            var connectionItem = Connections.First();

                            if (connectionItem.StopCalled.HasValue)
                            {
                                if (!connectionItem.StopCalled.Value && !connectionItem.ReStarted)
                                {
                                    result = true;
                                    connectionItem.ReStarted = true;

                                    if (connectionItem.DisConnectedDateTime.HasValue)
                                    {
                                        DateTime disconnection = connectionItem.DisConnectedDateTime.Value;
                                        connectionItem.DisConnectedDateTime = disconnection.AddSeconds(110); // 110초 정도의        라이센스 아웃 시간  증가.
                                    }
                                    
                                    db.SaveChanges();
                                }
                                else
                                {
                                    result = false;
                                }

                            }
                            else
                            {
                                result = false;
                            }
                        }
                        else
                        {
                            var waitConnections = db.WaitConnection.Where(con => con.ConnectionID == connection);

                            if (waitConnections.Count() > 0)
                            {
                                var waitConnectionItem = waitConnections.First();

                                if (waitConnectionItem.StopCalled.HasValue)
                                {
                                    if (!waitConnectionItem.StopCalled.Value && !waitConnectionItem.ReStarted)
                                    {
                                        result = true;
                                        waitConnectionItem.ReStarted = true;
                                        db.SaveChanges();
                                    }
                                    else
                                    {
                                        result = false;
                                    }

                                }
                                else
                                {
                                    result = false;
                                }
                            }
                        }
                    }
                }
            }
            catch (Exception ex)
            {
                result = false;
                System.Diagnostics.Debug.WriteLine(ex);
            }
            finally
            {
                GC.Collect();
                GC.WaitForPendingFinalizers();
            }

            return result;

        }