public ReadingFromExcelModel GetReadersFromFile(string fileName)
{
var result = new ReadingFromExcelModel();
//reading from excel
var excel = new ExcelQueryFactory();
List <Row> readers;
try
{
excel.FileName = fileName;
readers = excel.Worksheet().ToList();
if (readers.Count > 0)
{
if (!readers[0].ColumnNames.Contains("FirstName") || !readers[0].ColumnNames.Contains("LastName") ||
!readers[0].ColumnNames.Contains("Address") || !readers[0].ColumnNames.Contains("Birthday") ||
!readers[0].ColumnNames.Contains("Email") || !readers[0].ColumnNames.Contains("Telephone"))
{
throw new Exception();
}
}
}
catch
{
throw new ArgumentException("Invalid input file structure!");
}
for (int i = 0; i < readers.Count(); i++)
{
var validationResult = this.ValidateExcelRow(readers[i]);
if (validationResult.MemberNames.Count() == 0)
{
var readerBm = new ReaderBusinessModel();
readerBm.FirstName = readers[i]["FirstName"];
readerBm.LastName = readers[i]["LastName"];
readerBm.Address = readers[i]["Address"];
readerBm.Birthday = readers[i]["Birthday"].Cast <DateTime>();
readerBm.EMail = readers[i]["Email"];
readerBm.Phone = readers[i]["Telephone"];
result.Readers.Add(readerBm);
}
else
{
validationResult.ErrorMessage = string.Format("Line: {0}", i + 1);
result.Errors.Add(validationResult);
}
}
return(result);
}
public HttpResponseMessage AddReadersFromFile()
{
HttpPostedFile myFile = HttpContext.Current.Request.Files["File"];
var readersFromFile = new ReadingFromExcelModel();
string added = string.Empty;
string errors = string.Empty;
if (myFile != null && myFile.ContentLength != 0)
{
string pathForSaving = HttpContext.Current.Server.MapPath("~/App_Data/");
string path = Path.Combine(pathForSaving, myFile.FileName);
try
{
if (!path.EndsWith(ExcelFormat))
{
throw new Exception("incorrect file type");
}
myFile.SaveAs(path);
readersFromFile = this.excelManager.GetReadersFromFile(path);
}
catch (Exception ex)
{
var errorResult = new
{
errors = string.Format("File upload failed: {0}", ex.Message),
added = string.Empty,
isUploaded = true
};
return(Request.CreateResponse(HttpStatusCode.BadRequest, errorResult));
}
var addedReaders = this.readerManager.CreateReaders(readersFromFile.Readers);
added = "These readers where added: " + Environment.NewLine;
foreach (var reader in addedReaders)
{
added += reader.FirstName + " " + reader.LastName + Environment.NewLine;
}
errors = this.excelManager.GenerateErrorString(readersFromFile);
}
var result = new { isUploaded = true, added = added, errors = errors };
return(Request.CreateResponse(HttpStatusCode.OK, result));
}
public string GenerateErrorString(ReadingFromExcelModel model)
{
var errors = string.Empty;
if (model.Errors != null)
{
errors = "Errors: " + Environment.NewLine;
foreach (var error in model.Errors)
{
errors += error.ErrorMessage + " incorrect: ";
foreach (var name in error.MemberNames)
{
errors += name + " ";
}
errors += Environment.NewLine;
}
}
return(errors);
}
