public async Task <IActionResult> PutMyTable(int id, MyTable myTable)
        {
            if (id != myTable.Id)
            {
                return(BadRequest());
            }

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

            try
            {
                await _context.SaveChangesAsync();
            }
            catch (DbUpdateConcurrencyException)
            {
                if (!MyTableExists(id))
                {
                    return(NotFound());
                }
                else
                {
                    throw;
                }
            }

            return(NoContent());
        }
        public async Task <ActionResult> UpdateRecord()
        {
            // U - Update Single Record
            var r = _context.MyTables.Find(10); // EF

            r.EmpName = "So and so";
            r.Salary  = 1000;

            await _context.SaveChangesAsync();

            return(Ok());
            // return await _context.MyTables.ToListAsync();
        }