public ActionResult ProcessVmapFile() { var vmapFile = Request.Files["vmapFile"]; var datasetFile = Request.Files["datasetFile"]; if (vmapFile != null) { return(Json(datasetService.ProcessMetadataFile(vmapFile, datasetFile, ""))); } else { return(Json(datasetService.CreateMetadataFileFromDatasetFile(datasetFile))); } }