public async Task <IActionResult> PutCarparkGraphData([FromRoute] string id, [FromBody] CarparkGraphData carparkGraphData)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

            if (id != carparkGraphData.CarparkGraphDataID)
            {
                return(BadRequest());
            }

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

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

            return(NoContent());
        }
        public async Task <IActionResult> PostCarparkGraphData([FromBody] CarparkGraphData carparkGraphData)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

            _context.CarparkGraphData.Add(carparkGraphData);
            await _context.SaveChangesAsync();

            return(CreatedAtAction("GetCarparkGraphData", new { id = carparkGraphData.CarparkGraphDataID }, carparkGraphData));
        }