public async Task <IActionResult> Index(int page = 1, int pageSize = DEFAULT_PAGE_SIZE)
{
ClientPagingResult clientsPage = await this._clientService.GetPageAsync(page, pageSize);
ClientListViewModel clientListViewModel = new ClientListViewModel(clientsPage, page, pageSize);
int clientsFoundForPage = clientListViewModel.Clients.ToList().Count;
// retrieve the stored item count (if it exists)
int itemCount = 0;
string itemCountAsString = this.Request.Cookies[CLIENT_COUNT_COOKIE_KEY];
// create the ClientListViewModel with appropriate total item account
if (itemCountAsString != null && int.TryParse(itemCountAsString, out itemCount) &&
itemCount > clientListViewModel.TotalItemCount && clientsFoundForPage > 0 &&
clientsPage.HasMore)
{
// use the saved total item counts
clientListViewModel = new ClientListViewModel(clientsPage, page, pageSize, itemCount);
}
if (itemCount != clientListViewModel.TotalItemCount && clientsFoundForPage > 0)
{
this.Response.Cookies.Append(CLIENT_COUNT_COOKIE_KEY, clientListViewModel.TotalItemCount.ToString());
}
return(View("Index", clientListViewModel));
}
public ClientListViewModel(ClientPagingResult clientPagingResult, int pageNumber, int pageSize, int?totalItemCount)
{
Clients = clientPagingResult.Collection;
PageNumber = pageNumber;
PageSize = pageSize;
if (totalItemCount.HasValue)
{
TotalItemCount = totalItemCount.Value;
}
else if (clientPagingResult.HasMore)
{
TotalItemCount = pageNumber * pageSize + 1;
}
else
{
TotalItemCount = pageNumber * pageSize;
}
}
public ClientListViewModel(ClientPagingResult clientPagingResult, int pageNumber, int pageSize) : this(clientPagingResult, pageNumber, pageSize, null)
{
}