VendorsController.cs

    public class BaseController : Controller
    {
        protected readonly AdventureWorksDbContext _adventureWorksDbContext;

        protected static readonly JsonSerializerSettings DefaultJsonSerializerSettings = new JsonSerializerSettings
        {
            NullValueHandling = NullValueHandling.Ignore,
            ContractResolver = new CamelCasePropertyNamesContractResolver(),
            DateTimeZoneHandling = DateTimeZoneHandling.Utc
        };

        public BaseController(AdventureWorksDbContext adventureWorksDbContext)
        {
            _adventureWorksDbContext = adventureWorksDbContext;
        }
    }
    
    [Route("api/[controller]")]
    public class VendorsController : BaseController
    {
        public VendorsController(AdventureWorksDbContext adventureWorksDbContext) : base(adventureWorksDbContext)
        {
        }

        [HttpGet]
        public IActionResult Get(DateTime sinceModifiedDate)
        {
            IQueryable<VendorViewModel> vendors = _adventureWorksDbContext.Vendors.AsNoTracking()
                .Where(q => q.ModifiedDate >= sinceModifiedDate)
                .Select(
                vendor =>
                    new VendorViewModel
                    {
                        Id = vendor.VendorID,
                        IsActive = vendor.IsActive,
                        AccountNumber = vendor.AccountNumber,
                        Name = vendor.Name,
                        PreferredVendorStatus = vendor.PreferredVendorStatus
                    });

            return Json(vendors, DefaultJsonSerializerSettings);
        }
    }