public async Task<ActionResult> Index(PagingInfo pi = null)
{
pathToFile = Server.MapPath("~/App_Data/json.json");
List<Dictionary<string, object>> jsonData = null;
jsonData = await JsonHelper.ReadJsonFromFileAndCache(pathToFile, HttpContext.Cache);
if (pi != null)
{
if (!pi.IsDefault)
{
ViewBag.PagingInfo = pi;
return View();
}
}
PagingInfo info = new PagingInfo();
info.IsDefault = false;
info.PageSize = 3;
info.PageCount = Convert.ToInt32(Math.Ceiling((double)(jsonData.Count / info.PageSize)));
info.CurrentPageIndex = 0;
ViewBag.PagingInfo = info;
return View();
}
public async Task<List<Dictionary<string, object>>> GetData(PagingInfo info)
{
List<Dictionary<string, object>> jsonData = null;
if (HttpContext.Cache["jsonData"] == null)
{
jsonData = await JsonHelper.ReadJsonFromFileAndCache(pathToFile, HttpContext.Cache);
}
else
{
jsonData = (List<Dictionary<string, object>>)HttpContext.Cache["jsonData"];
}
List<Dictionary<string, object>> result = jsonData.Skip(info.CurrentPageIndex * info.PageSize).Take(info.PageSize).ToList();
return result;
}
public async Task<JsonResult> GetDataUsingJson(PagingInfo info)
{
ViewBag.PagingInfo = info;
return Json(await GetData(info), JsonRequestBehavior.AllowGet);
}
public async Task<PartialViewResult> GetDataUsingView(PagingInfo info)
{
ViewBag.PagingInfo = info;
return PartialView(await GetData(info));
}
public PagingInfo(PagingInfo info)
{
PageSize = info.PageSize;
PageCount = info.PageCount;
CurrentPageIndex = info.CurrentPageIndex;
}
public PagingInfo(PagingInfo info, int currentPageIndex)
{
PageSize = info.PageSize;
PageCount = info.PageCount;
CurrentPageIndex = currentPageIndex;
}
