Message 'The underlying connection was closed' when calling a WCF function - asp.net

Question

Initially, I called a function in my web service from my controller and next I paginate the result to only show 10 items in my view. I proceeded like this:
Controller:
public ActionResult Index(int? page)
{
var companies = _requestServiceClient.GetCompanies();
int currentPageIndex = page.HasValue ? page.Value - 1 : 0;
var companiesListPaged = companies.ToPagedList(currentPageIndex, defaultPageSize);
return View(companiesListPaged);
}
Service:
public IEnumerable<Company> GetCompanies()
{
using (var unitOfWork = UnitOfWorkFactory.Create())
{
var companyRepository = unitOfWork.Create<Company>();
return companyRepository.GetAll().MyInclude(x => x.City).ToList();
}
}
So the pagination was done after all data was retrieved from my service. It works but a lot of data was transmitted so not very efficient. I changed my code to do the pagination work directly in the service like this:
Controller:
[Authorize]
public ActionResult Index(int? page)
{
int currentPageIndex = page.HasValue ? page.Value - 1 : 0;
var companies = _requestServiceClient.GetCompaniesToPagedList(currentPageIndex, defaultPageSize);
return View(companies);
}
Service:
public IPagedList<Company> GetCompaniesToPagedList(int PageIndex, int PageSize)
{
using (var unitOfWork = UnitOfWorkFactory.Create())
{
var companyRepository = unitOfWork.Create<Company>();
var companies = companyRepository.GetAll().MyInclude(x => x.City).ToList();
return companies.ToPagedList(PageIndex, PageSize);
}
}
It compiles but at runtime I got the error:
The underlying connection was closed: A connection that was expected to be kept alive was closed by the server.
Any idea? Why does this change in my code gives me this error?
I didn't change anything else.
Thanks.
UPDATE
And here is the code for the IPagedList
public interface IPagedList<T> : IList<T>
{
int PageCount { get; }
int TotalItemCount { get; }
int PageIndex { get; }
int PageNumber { get; }
int PageSize { get; }
bool HasPreviousPage { get; }
bool HasNextPage { get; }
bool IsFirstPage { get; }
bool IsLastPage { get; }
}
And for ToPagedList
public static IPagedList<T> ToPagedList<T>(this IEnumerable<T> source, int pageIndex, int pageSize, int? totalCount = null)
{
return new PagedList<T>(source, pageIndex, pageSize, totalCount);
}

Answer 1

I would suggest checking if the amount of data returned by the call may exceed the limits defined in the ReaderQuotas element of your Binding.