Grid, paging and postback

[Sylvain]

Hello all

I am using a radgrid with a pager :

<telerik:RadGrid ID="ResultsGrid" runat="server" AllowPaging="True" AllowSorting="True" OnSortCommand="RadGrid_SortCommand" EnableViewState="true"
                         AutoGenerateColumns="False" GridLines="None"  ShowHeader="true"
                         PageSize="7" OnItemCommand="HandleDoubleclick" Width="99%">
        <MasterTableView DataKeyNames="Id,Abstract,InternalId" CanRetrieveAllData="false">
            <Columns>
[...]

Then in the UI, when the user clicks on a page number, there is a postback (as it seems) that makes the user wait for the reloading (which is fine); but when he clicks on the button "Next page" or "Previous page", there is not this postback ... so we have the feeling that nothing happened for 1 or 2 sec. and then the page changes.
How can I have the same behavior as for when we click on the page numbers ?
Thanks for your help,
Sylvain

[Sylvain]

Hi all
Let me reformulate my question :
Is there a way (an event or so...) to detect when a user clicks on one of the following buttons : Next, Prev, First and Last ?

I  have seen the ItemCommand event, but it is called after a small delay, so we still have the impression that nothing happened when we clicked on the button. While, when you click on the page number, the postback is immediate.

Thanks again for your help
Sylvain

[Shinu]

Hello Sylvian,

After inspecting your code, I suppose that you are using Simple data-binding through the DataBind() method which can be used in simple scenarios. In order to implement complex operations like paging, filtering etc Advanced Data Binding through NeedDataSource event is preferred.
Advanced Data-binding (using NeedDataSource event).

Thanks,
Shinu.

[Sylvain]

Hello Shinu and thank you for your answer

I do bind using NeedDataSource, it is done in the code behind though :

ResultsGrid.NeedDataSource += new Telerik.Web.UI.GridNeedDataSourceEventHandler(BindDataSource);


[...]

private void BindDataSource(object source, Telerik.Web.UI.GridNeedDataSourceEventArgs e)
    {
        if (!e.IsFromDetailTable)
        {
            ResultsGrid.MasterTableView.DataSource = GetDataSource();
        }
    }

[Sylvain]

No one ?