public List <string> GetImportableItems(int packageId, int itemTypeId, Type itemType, ResourceGroupInfo group) { List <string> items = new List <string>(); // get service id int serviceId = PackageController.GetPackageServiceId(packageId, group.GroupName); if (serviceId == 0) { return(items); } OS.OperatingSystem os = GetOS(serviceId); if (itemType == typeof(SystemDSN)) { items.AddRange(os.GetDSNNames()); } return(items); }