public async Task <ActionResult> Upload(HttpPostedFileBase file)
{
//check the user has entered a file
if (file != null)
{
//check if the file is valid
if (ValidateFile(file))
{
try
{
SaveFileToDisk(file);
}
catch (Exception)
{
ModelState.AddModelError("FileName", "Sorry an error occurred saving the file to disk, please try again");
}
}
else
{
ModelState.AddModelError("FileName", "The file must be gif, png, jpeg or jpg and less than 2MB in size");
}
}
else
{
//if the user has not entered a file return an error message
ModelState.AddModelError("FileName", "Please choose a file");
}
if (ModelState.IsValid)
{
var model = new ItemImageCreate
{
FileName = file.FileName
};
var itemImageService = CreateItemImageService();
string responce = await itemImageService.CreateItemImage(model);
if (responce == "success")
{
TempData["SaveResult"] = "Your file was uploaded.";
return(RedirectToAction("Index"));
}
ModelState.AddModelError("FileName", responce);
}
return(View());
}
public async Task <string> CreateItemImage(ItemImageCreate model)
{
var entity =
new ItemImage()
{
OwnerId = _userId,
FileName = model.FileName
};
using (var ctx = new ApplicationDbContext())
{
string message = "";
ctx.ItemImages.Add(entity);
try
{
if (await ctx.SaveChangesAsync() == 1)
{
message = "success";
}
}
catch (DbUpdateException ex)
{
SqlException innerException = ex.InnerException.InnerException as SqlException;
if (innerException != null && innerException.Number == 2601)
{
message = "The file " + model.FileName +
" already exists in the system. Please delete it and try again if you wish to re-add it";
}
else
{
message = "Sorry an error has occurred saving to the database, please try again";
}
}
return(message);
}
}