public SqlNotificationDependency() { ConnectToSQL cts = new ConnectToSQL(); cts.Connect(Config.ConnectionStringEDP, 1433, "f"); string ConnectionString = $"Server={Config.ConnectionStringEDP},1433; initial catalog = chat_container; user id = SqlUser; password = SqlUserSt0rongP@assord"; SqlTableDependency <ChatsC> myDependencyTableDependency; try { myDependencyTableDependency = new SqlTableDependency <ChatsC>(ConnectionString, cts.GetServerListChannelData(0).FirstOrDefault().Name); myDependencyTableDependency.OnError += (o, args) => this.ErrorNotification(o, args); myDependencyTableDependency.OnChanged += (o, args) => this.OutputNotification(args.ChangeType, args.Entity); myDependencyTableDependency.Start(); } catch { } }