public async Task SendLine(int moveToX, int moveToY, int lineToX, int lineToY) { var line = new Line { MoveToX = moveToX, MoveToY = moveToY, LineToX = lineToX, LineToY = lineToY }; await chatRoomService.AddLine(line); await Clients.Others.SendAsync( "DrawLine", line.MoveToX, line.MoveToY, line.LineToX, line.LineToY ); }