public ActionResult UploadFile(IEnumerable <HttpPostedFileBase> files)
{
StringBuilder status = new StringBuilder();
if (files != null && files.Count() > 0)
{
foreach (HttpPostedFileBase file in files)
{
if (file == null)
{
continue;
}
try
{
CsvFile csvFile = CsvFileDal.AddCsvFile(file, db);
if (ModelState.IsValid)
{
db.SaveChanges();
}
status.AppendFormat("File [{0}] is uploaded successfully! ", file.FileName);
IEnumerable <string> result = DirectedGraphUtil.ShortestPath(csvFile.CsvRecords.ToList());
if (result != null)
{
status.AppendFormat(" The shortest path in the grapth is {0}", string.Join("->", result));
}
}
catch (Exception e)
{
status.AppendFormat("File [{0}] failed to upload due to {1} ", file.FileName, e.Message);
}
}
}
else
{
status.Append("File upload failed: Error: no file is chosen to upload.");
}
ViewBag.Message = status.ToString();
return(View(db.CsvFiles));
}
static string ValidateCsvRecords(IList <CsvRecord> records)
{
string result = "";
bool negativeQuantity = records.Any(r => r.Quantity < 0);
if (negativeQuantity)
{
result = "Error: some record has negative quantity column. ";
}
IEnumerable <string> cycle = DirectedGraphUtil.DirectedGraphHasCycle(records);
if (cycle != null)
{
result = result + "Error: the records contain cycle: " + string.Join("->", cycle);
}
return(result);
}
public ActionResult UploadFile(HttpPostedFileBase file)
{
try
{
IList <string> lines = new List <string>();
string content = "";
string result = "And it doesn't contain cycle. ";
if (file.ContentLength > 0)
{
string fileName = Path.GetFileName(file.FileName);
byte[] bytes = new byte[file.ContentLength];
file.InputStream.Read(bytes, 0, file.ContentLength);
content = Encoding.UTF8.GetString(bytes);
CsvFile csvFile = new CsvFile(file.FileName, bytes);
CsvFileDal dal = new CsvFileDal();
dal.AddCsvFile(csvFile);
bool b = DirectedGraphUtil.DirectedGraphHasCycle(content);
if (b)
{
result = "But it contains cycle. ";
}
}
ViewBag.Message = "File Uploaded Successfully!! " + result + content;
return(View());
}
catch (Exception e)
{
ViewBag.Message = "File upload failed: " + e.ToString();
return(View());
}
}
