Question

How can i cache my items and values for dropdown list in MVC?

Is there a way to do so?

I am doing that in controller.

Sample code is…….

    public ActionResult Index()
    {
        RegionTasks regionTasks = new RegionTasks();
        ViewBag.Region = GetRegions();}

My controller has function as below.

 [OutputCache(Duration = 10, Location = System.Web.UI.OutputCacheLocation.Server)]
    private IEnumerable<SelectListItem> GetRegions()
    {
        RegionTasks regionTasks = new RegionTasks();
       return regionTasks.GetRegions();
    }

I have tested and it not caches the item for region.

How can i do that?

Answer 1

Darin is also right, how ever i have done following code to store on server for X minutes.

 private IEnumerable<SelectListItem> GetGlobalUrlRegion(string profileName)
    {
        string cacheKey = "cacheUrlRegion";
        RegionTasks regionTasks = RegionTasks.CreateRegionTasks();
        IEnumerable<SelectListItem> regionUrlList = HttpContext.Cache[cacheKey] as IEnumerable<SelectListItem>;
        if (regionUrlList == null)
        {
            var regionObject = regionTasks.GetRegions(profileName);
            var cTime = DateTime.Now.AddMinutes(int.Parse(System.Configuration.ConfigurationSettings.AppSettings["GlobalCacheDurationInMin"].ToString()));
            var cExp = System.Web.Caching.Cache.NoSlidingExpiration;
            var cPri = System.Web.Caching.CacheItemPriority.Normal;
            regionUrlList = regionObject;
            HttpContext.Cache.Insert(cacheKey, regionObject, null, cTime, cExp, cPri, null);
        }

        return regionUrlList;
    }