public ActionResult UploadFile(LgProtocolFileViewModel viewModel)
{
HttpPostedFileBase file = viewModel.File;
//checks if the file contains anything.
if (file.ContentLength > 0)
{
string md5Hash;
using (var md5 = MD5.Create())
{
//Converts the md5hash to a string without "-".
md5Hash = BitConverter.ToString(md5.ComputeHash(file.InputStream)).Replace("-", "").ToLower();
}
var uploadDate = DateTime.Now;
//Creates the name by concatenating the md5hash with the current date without "-".
string nameOnServer = md5Hash + uploadDate.ToString("d").Replace("-", "");
//Converts the relative filepath to the absolute filepath.
string filePath = Path.Combine(Server.MapPath("~/App_Data/LgProtocols"), nameOnServer);
//Creates a model with info about the file that will later be saved to the database.
var model = new LgProtocolModel
{
Name = Path.GetFileNameWithoutExtension(file.FileName),
FileSize = file.ContentLength / 1024,
MD5Hash = md5Hash,
NameOnServer = nameOnServer,
UploadDate = uploadDate
};
//Saves the info to the database if it isn't uploaded allready.
if (!System.IO.File.Exists(filePath))
{
using (IProtocolRepository repository = new ProtocolRepository())
{
repository.AddLgProtocol(model);
repository.Save();
}
//Saves the file to the server.
file.SaveAs(filePath);
}
return Json(new { success = true }, JsonRequestBehavior.AllowGet);
}
//if the file was empty an error is returned.
return Json(new { ErrorMessage = "File was empty" }, JsonRequestBehavior.AllowGet);
}
/// <summary>
/// Adds info about a meeting protocol to the database.
/// </summary>
/// <param name="model">The instance of <c>LgProtocolModel</c> representing the info to add.</param>
public void AddLgProtocol(LgProtocolModel model)
{
context.LgProtocols.Add(model);
}