public ActionResult Edit([Bind(Include = "ID,Name")] Category category)
{
if (ModelState.IsValid)
{
db.Entry(category).State = EntityState.Modified;
db.SaveChanges();
return(RedirectToAction("Index"));
}
return(View(category));
}
public ActionResult Upload(HttpPostedFileBase[] files)
{
bool allValid = true;
string inValidFiles = "";
//check the user has entered a file
if (files[0] != null)
{
//if the user has entered less than ten files
if (files.Length <= 10)
{
//check they are all valid
foreach (var file in files)
{
if (!ValidateFile(file))
{
allValid = false;
inValidFiles += ", " + file.FileName;
}
}
//if they are all valid then try to save them to disk
if (allValid)
{
foreach (var file in files)
{
try
{
SaveFileToDisk(file);
}
catch (Exception)
{
ModelState.AddModelError("FileName", "Sorry an error occurred saving the files to disk, please try again");
}
}
}
//else add an error listing out the invalid files
else
{
ModelState.AddModelError("FileName", "All files must be gif, png, jpeg or jpg and less than 2MB in size.The following files" + inValidFiles +
" are not valid");
}
}
//the user has entered more than 10 files
else
{
ModelState.AddModelError("FileName", "Please only upload up to ten files at a time");
}
}
else
{
//if the user has not entered a file return an error message
ModelState.AddModelError("FileName", "Please choose a file");
}
if (ModelState.IsValid)
{
bool duplicates = false;
bool otherDbError = false;
string duplicateFiles = "";
foreach (var file in files)
{
//try and save each file
var productToAdd = new ProductImage {
FileName = file.FileName
};
try
{
db.ProductImages.Add(productToAdd);
db.SaveChanges();
}
//if there is an exception check if it is caused by a duplicate file
catch (DbUpdateException ex)
{
SqlException innerException = ex.InnerException.InnerException as SqlException;
if (innerException != null && innerException.Number == 2601)
{
duplicateFiles += ", " + file.FileName;
duplicates = true;
db.Entry(productToAdd).State = EntityState.Detached;
}
else
{
otherDbError = true;
}
}
}
//add a list of duplicate files to the error message
if (duplicates)
{
ModelState.AddModelError("FileName", "All files uploaded except the files" + duplicateFiles + ", which already exist in the system." +
" Please delete them and try again if you wish to re-add them");
return(View());
}
else if (otherDbError)
{
ModelState.AddModelError("FileName", "Sorry an error has occurred saving to the database, please try again");
return(View());
}
return(RedirectToAction("Index"));
}
return(View());
}
