public async Task <IActionResult> PutMessage_Chain(int id, Message_Chain message_Chain)
        {
            if (id != message_Chain.MessageChainId)
            {
                return(BadRequest());
            }

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

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

            return(NoContent());
        }
        public async Task <ActionResult <Message_Chain> > PostMessage_Chain(Message_Chain message_Chain)
        {
            _context.Message_Chain.Add(message_Chain);
            try
            {
                await _context.SaveChangesAsync();
            }
            catch (DbUpdateException e)
            {
                if (Message_ChainExists(message_Chain.MessageChainId))
                {
                    return(Conflict());
                }
                else
                {
                    throw e;
                }
            }

            //return CreatedAtAction(nameof(GetTodoItem), new { id = todoItem.Id }, todoItem);
            //  return CreatedAtAction("GetMessage_Chain", new { id = message_Chain.MessageChainId }, message_Chain);
            return(CreatedAtAction(nameof(GetMessage_Chain), new { id = message_Chain.MessageChainId }, message_Chain));
        }