public DEVICES GetDevice(string dataDeviceId) { var devices = _dbContext.DEVICES; var device = devices.FirstOrDefault(dev => dev.DEVICE_ID == dataDeviceId); if (device != null) { return(device); } devices.Add(new DEVICES { DEVICE_ID = dataDeviceId, BLOCKED = false }); _dbContext.SaveChanges(); return(devices.FirstOrDefault(dev => dev.DEVICE_ID == dataDeviceId)); }