public async Task <IActionResult> Edit(int id, [Bind("Id,LibroId,FechaPrestamo,FechaEntrega")] Prestamo prestamo)
        {
            if (id != prestamo.Id)
            {
                return(NotFound());
            }

            if (ModelState.IsValid)
            {
                try
                {
                    _context.Update(prestamo);
                    await _context.SaveChangesAsync();
                }
                catch (DbUpdateConcurrencyException)
                {
                    if (!PrestamoExists(prestamo.Id))
                    {
                        return(NotFound());
                    }
                    else
                    {
                        throw;
                    }
                }
                prestamo.FechaEntrega = DateTime.Now;
                //return RedirectToAction(nameof(Index));
                return(RedirectToAction("ReciboEntrada", prestamo));
            }
            return(View(prestamo));
        }
        public async Task <IActionResult> Edit(int id, [Bind("Id,Nombre,Descripcion")] General general)
        {
            if (id != general.Id)
            {
                return(NotFound());
            }

            if (ModelState.IsValid)
            {
                try
                {
                    _context.Update(general);
                    await _context.SaveChangesAsync();
                }
                catch (DbUpdateConcurrencyException)
                {
                    if (!GeneralExists(general.Id))
                    {
                        return(NotFound());
                    }
                    else
                    {
                        throw;
                    }
                }
                return(RedirectToAction(nameof(Index)));
            }
            return(View(general));
        }
        public async Task <IActionResult> Edit(int id, [Bind("Id,Titulo,Editorial,Year,DiasPrestamo")] Libro libro)
        {
            if (id != libro.Id)
            {
                return(NotFound());
            }

            if (ModelState.IsValid)
            {
                try
                {
                    _context.Update(libro);
                    await _context.SaveChangesAsync();
                }
                catch (DbUpdateConcurrencyException)
                {
                    if (!LibroExists(libro.Id))
                    {
                        return(NotFound());
                    }
                    else
                    {
                        throw;
                    }
                }
                return(RedirectToAction(nameof(Index)));
            }
            return(View(libro));
        }