public async Task <IActionResult> OnPost() { if (PdfFile == null || ImgFile == null) { return(BadRequest()); } else { Book.CreationDate = DateTime.Now; if (ModelState.IsValid) { #region pdf file string pdfFileName = Guid.NewGuid().ToString() + Path.GetFileName(PdfFile.FileName); string pdfFilePath = Path.Combine(env.WebRootPath, "files"); string fullPath = Path.Combine(pdfFilePath, pdfFileName); Book.Url = pdfFileName; await PdfFile.CopyToAsync(new FileStream(fullPath, FileMode.Create)); #endregion #region img file string imgFileName = Guid.NewGuid().ToString() + Path.GetFileName(ImgFile.FileName); string imgFilePath = Path.Combine(env.WebRootPath, "imgs"); string imgFullPath = Path.Combine(imgFilePath, imgFileName); Book.ImgUrl = imgFileName; await ImgFile.CopyToAsync(new FileStream(imgFullPath, FileMode.Create)); #endregion await db.Books.AddAsync(Book); await db.SaveChangesAsync(); return(RedirectToPage("index")); } return(Page()); } }