/// <summary> /// 设置默认的摄像头,如果没有 则设置为“无” /// </summary> public static void SetDefaultCamera() { var cameraList = VideoHelper.GetAllCameras(); if (cameraList.Count != 0) { XmlHelper.SetValue("Camera", 0, cameraList[0].Value); List <SimpleModel> resolutionList = VideoHelper.GetCameraResolution(0); if (resolutionList != null && resolutionList.Count != 0) { XmlHelper.SetValue("CameraResolution", 0, resolutionList[0].Value); var listCameraSize = VideoHelper.GetCameraSize(resolutionList[0].Value); if (listCameraSize != null && listCameraSize.Count != 0) { XmlHelper.SetValue("CameraSize", 0, listCameraSize[0].Value); } } } else { XmlHelper.SetValue("Camera", "无"); } }