public static Stream ConstructCsvFiles(IList <CsvFile> csvFiles, ref string contentType, ref string fileName)
{
if (csvFiles.Count == 1)
{
contentType = csvFiles[0].ContentType;
fileName = csvFiles[0].FileName;
return(CsvRecordDal.ConstructCsvFile(csvFiles[0].CsvRecords));
}
contentType = "application/zip";
fileName = "attachment.zip";
MemoryStream zipToOpen = new MemoryStream();
using (ZipArchive archive = new ZipArchive(zipToOpen, ZipArchiveMode.Create, true))
{
foreach (CsvFile csvFile in csvFiles)
{
string csvFileName = csvFile.Id + "-" + csvFile.FileName;
ZipArchiveEntry csvEntry = archive.CreateEntry(csvFileName);
using (Stream csvEntryStream = csvEntry.Open())
{
CsvRecordDal.ConstructCsvFile(csvFile.CsvRecords, csvEntryStream);
}
}
}
zipToOpen.Flush();
zipToOpen.Position = 0;
return(zipToOpen);
}
public static CsvFile AddCsvFile(HttpPostedFileBase file, CsvContext db)
{
if (file.ContentLength > 0)
{
string fileName = Path.GetFileName(file.FileName);
string contentType = file.ContentType;
byte[] bytes = new byte[file.ContentLength];
file.InputStream.Read(bytes, 0, file.ContentLength);
CsvFile csvFile = new CsvFile(fileName, contentType);
IList <CsvRecord> records = CsvRecordDal.RetrieveCsvRecords(bytes, csvFile);
csvFile.CsvRecords = records;
db.CsvFiles.Add(csvFile);
db.CsvRecords.AddRange(records);
return(csvFile);
}
else
{
throw new Exception("Error: the uploaded file is empty.");
}
}