RadGrid Previous and Next buttons not working

[Mahipal]

Hi,
I have a RadGrid that displays the page numbers and the previous and Next buttions for paging functionality. The paging works when I click on the page number but not when I click on the previous/next buttons. The following is the skeleton of my code. Please suggest a solution to make this work.

It works fine if I take out the rebind() call in the page load event. However I need this to support other functionality. 

     protected void Page_Load(object sender, EventArgs e)

    {

        cboSelectReport.Attributes.Add("onchange", "DisplayNewReport();");

 

        string sqlString ="declare @startdate datetime; declare @enddate datetime;";

      sqlString = sqlString + "set @startdate = '" + dtpStart.SelectedDate.ToString() + "';";

      sqlString = sqlString + "set @enddate = '" + dtpEnd.SelectedDate.ToString() + "';";

       
   radgrid.Skin = "Outlook";

 

        ReportSource.SelectCommand = sqlString + ConfigurationManager.AppSettings["sqlcommand6"];

        ReportSource.DataBind();

 

        radgrid.Rebind();

    }

    public void radgrid_NeedDataSource(object sender, GridNeedDataSourceEventArgs e)
    {
        radgrid.DataSource = ReportSource;
    }


Thanks
Mahipal

[Princy]

Hello Mahipal,

I cannot reproduce the issue at my end. Make sure that you bind the grid entirely using NeedDataSource event which fires whenever paging, sorting, grouping etc occurs. Check the following help documentation and demo for more about this.
Advanced Data-binding (using NeedDataSource event).
Grid / Advanced Data Binding.

Thanks,
Princy.

[Attila Antal]

To everyone who is landing on this Forum thread with the same or similar problem, please note that rebinding in the Page Load without the condition if(!IsPostBack), will cause the Grid to re-create its structure every single time, thus losing the previous state.

To bind data to the Grid on the server side, use the following approaches:

• Programmatically using the NeedDataSource
• Declaratively using DataSource Controls

Note: Regardless of the way you choose, never call the DataBind() method as this will break the Grid's expected behavior. To refresh the Grid, always use the Rebind() method.

DataBind() method is inherited from the generic ASP GridView Class, which is why it is available in the Telerik RadGrid, however, the Grid has its own ways of binding to data and we highly recommend using those.

Regards,
Attila Antal
Progress Telerik