i am using mvc web api as background api of ionic project(using angularjs) and want to use session for passing data to dictionary,in order that i can get limited data from total data and display them in first page,then next data as well as scrolling, please help me
[HttpGet]
[Route("user/takenCourseDetails")]
[ResponseType(typeof(TeachMatEventsModelView))]
public IHttpActionResult takenCourseDetails(int masterCourseId, int secId, int page, int PageSize, int IsPaging)
{
if (IsPaging == 0)
{
if (page == 0)
{
LoadAllEventToSession(masterCourseId, secId);
var eventList = GetProductsForPage(page);
return Ok(eventList);
}
}
return Ok();
}
public void LoadAllEventToSession(int masterCourseId, int secId)
{
if (db.View_TeachMatEventList.Where(m => m.MasterCourseId == masterCourseId && m.SectionId == secId).Any())
{
var allEventList = db.View_TeachMatEventList.Where(m => m.MasterCourseId == masterCourseId && m.SectionId == secId
&& m.HasParent==false && m.Status == 1).OrderBy(m => m.EventNumber).ToList();
int cmnIndex = 1;
var session = HttpContext.Current.Session;
session["event"] = allEventList.ToDictionary(m => cmnIndex++, m => m);
session["totalEvent"] = allEventList.Count();
}
}
public Dictionary<int, TeachMatEventsModelView> GetProductsForPage(int pageNum)
{
var session = HttpContext.Current.Session;
Dictionary<int, TeachMatEventsModelView> eventList= (session["event"] as Dictionary<int, TeachMatEventsModelView>);
int from = (pageNum * ShowEventPerPage);
int to = from + ShowEventPerPage;//ShowEventPerPage=5;
return eventList.Where(x => x.Key > from && x.Key <= to).OrderBy(x => x.Key).ToDictionary(x => x.Key, x => x.Value);
}
Error:
