public IActionResult Put(int id, [FromBody] Computer computer)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

            if (id != computer.ComputerId)
            {
                return(BadRequest());
            }

            _context.Entry(computer).State = EntityState.Modified;

            try
            {
                _context.SaveChanges();  //jk-Save all changes if data has be edited.
            }
            catch (DbUpdateConcurrencyException)
            {
                if (!ComputerExists(id))
                {
                    return(NotFound());  //jk-If the computer doesn't exist in the database, an error will be thrown.
                }
                else
                {
                    throw;
                }
            }

            return(new StatusCodeResult(StatusCodes.Status204NoContent));
        }
        public IActionResult Put(int id, [FromBody] Employee employee)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }
            if (id != employee.EmployeeId)
            {
                return(BadRequest());
            }

            _context.Entry(employee).State = EntityState.Modified;

            try
            {
                _context.SaveChanges();
            }
            catch (DbUpdateConcurrencyException)
            {
                if (!EmployeeExists(id))
                {
                    return(NotFound());
                }
                else
                {
                    throw;
                }
            }
            return(new StatusCodeResult(StatusCodes.Status204NoContent));
        }
        public IActionResult Put(int id, [FromBody] TrainingProgram modifiedTrainingProgram)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

            if (id != modifiedTrainingProgram.TrainingProgramID)
            {
                return(BadRequest());
            }

            _context.Entry(modifiedTrainingProgram).State = EntityState.Modified;

            try
            {
                _context.SaveChanges();
            }
            catch (DbUpdateConcurrencyException)
            {
                if (!TrainingProgramExists(id))
                {
                    return(NotFound());
                }
                else
                {
                    throw;
                }
            }

            return(new StatusCodeResult(StatusCodes.Status204NoContent));
        }