public async void PrepareFileForDownload(string datasetId) // prepare the file in server
{
_exportService.SetDatasetStatus(datasetId, "", 1);
UserDataset dataset;
var filePath = _exportService.GetDownloadPath(datasetId, out dataset);
try
{
var fileInfo = await _exportService.CreateFileForDataset(dataset, filePath);
_exportService.SetDatasetStatus(datasetId, fileInfo.FullName, 2);
}
catch (Exception e)
{
// in the case of an error the file status should be changed to 0
_exportService.SetDatasetStatus(datasetId, "", 3);
throw e;
}
}