public void CloseCamera(int cameraId, CMS_GUID guid) { Logger.Instance.WriteLog("请求关闭摄像头"); if (OpenCameraList.ContainsKey(cameraId) && OpenCameraList[cameraId] > 1) { OpenCameraList[cameraId]--; } else { bool ret = client.CloseCamera(cameraId, guid, CloseCameraCallback); if (ret) { Logger.Instance.WriteLog("请求关闭摄像头成功"); } else { Logger.Instance.WriteLog("请求关闭摄像头失败。CameraId:" + cameraId); } } }