[Solved] How to set the Pager page count, or ...

[Taburetka Kekc]

Hello everybody !

i've got a RadGrid with paging enabled and 1600+ rows.

and i wanted to optimize it's performance by querying data only for items which are currently shown, so i made NeedDatasource event  look like this :

        protected void RadGrid1_NeedDataSource(object source, Telerik.Web.UI.GridNeedDataSourceEventArgs e)

        {

            int currentPageIndex = RadGrid1.MasterTableView.CurrentPageIndex;

            int itemsToTake = RadGrid1.PageSize;

            int offset = currentPageIndex * itemsToTake;

            var ds = GetGridDataSource(itemsToTake, offset);

            RadGrid1.DataSource = ds;

        }

it worked, but the pager now dissapeared, i tryed to set VirtualItemCount property to 1600, but nothing happened.

are there any possibility to set Pager pages count ? or maybe there exists better solution to optimize performance ?

Thank You !

[Pavlina]

Hi,

To optimize the control performance on the client as much as possible, you may use built-in/custom paging and present only fixed set of records at a time - here are online examples for it:
http://demos.telerik.com/aspnet-ajax/grid/examples/generalfeatures/paging/defaultcs.aspx
http://demos.telerik.com/aspnet-ajax/grid/examples/programming/custompaging/defaultcs.aspx

In case you have more than 100 records in a flat grid, it is recommended to turn on the build-in paging/custom paging of the grid. This will not only optimize the grid loading time but also will enrich the user experience, thus giving him/her the flexibility to easily navigate through the grid records.

Greetings,
Pavlina
the Telerik team

 

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