public async Task <IActionResult> PostKhachHang([FromBody] CreateKHRequest request)
{
if (!ModelState.IsValid)
{
return(BadRequest(ModelState));
}
KhachHang khachHang = service.CreateKhachHang(request);
return(CreatedAtAction("GetKhachHang", new { id = khachHang.IdKhachHang }, khachHang));
}