After upgrading from version 2011 to 2013 custom paging has stopped working properly

[Alexander]

I have client-side grid inherited from RadGrid. It was fully functional, but after upgrade to the newest Telerik version it stopped working properly.

For instance, I have a custom pager: it's RadCombobox created like this:

protected override void OnItemEvent(GridItemEventArgs e)
{
    if (e.EventInfo is GridInitializePagerItem && e.Item is GridPagerItem)
    {
        e.Canceled = true;
        B4GridClientPager = new B4GridClientPager((e.EventInfo as GridInitializePagerItem).PagingManager, e.Item.OwnerTableView, Page, MaxNumberOfRows);
        (e.Item as GridPagerItem).PagerContentCell.Controls.Add(B4GridClientPager);
    }
}

This event is fired twice as we all know :) and before it was not a problem, but now after I select value in the pager and SelectedIndexChanged event happens - the values in the combobox are duplicated on page reload! No matter if I turn viewstate on or off, for combobox itself or the grid in common...

More code I previously had to write to make custom paging work:

private void RadGridDebriefitClientPager_Init(object sender, EventArgs e)
{
    var radComboBox = sender as RadComboBox;

    if (Page.IsPostBack)
    {
        if (HttpContext.Current.Request.Params["__EVENTTARGET"] != null &&
            HttpContext.Current.Request.Params["__EVENTTARGET"] == radComboBox.ClientID)
        {
            int pageSize;

            if (int.TryParse(HttpContext.Current.Request.Params["__EVENTARGUMENT"], out pageSize))
            {
                if (pageSize > 0)
                {
                    _tableView.PageSize = pageSize;
                    _tableView.OwnerGrid.PageSize = pageSize;
                    _tableView.CurrentPageIndex = 0;
                    _tableView.OwnerGrid.CurrentPageIndex = 0;
                    //tableView.Rebind();
                }
            }
        }
    }
}

and it was called by using this:

function RadGridDebriefitClientPager_SelectedIndexChanged(sender, eventArgs) {
    __doPostBack(sender.get_id(), sender.get_value());
}

Autopostback property of combo is set to false, so this event fires only.

[Antonio Stoilkov]

Hi Alexander,

You have posted the same question in a support ticket and you could decide where our communication will continue. Note that we recommend avoiding posting duplicate questions so the support team could improve their response time.

Regards,
Antonio Stoilkov
Telerik