Grid on Page_Init and NeedDataSource Event

[Manuel Ortiz]

Hi, I have a dynamically created grid on page_init as you show in your demos.  I would like to know if there is any difference between setting the Grid.DataSource when the Grid is created on Page_Init and setting the DataSource on the NeedDataSource event of the grid.  I ask this because I noticed that the grid always calls the NeedDataSource event as opposed to if the grid was created declaratively in the page.

Any help would be greatly appreciated,
Manuel

[Tsvetoslav]

Hi Manuel,

Our examples on Simple databinding and Advanced databinding and the related help topics should contain the answer for your.

Hope it helps.

Best wishes,
Tsvetoslav
the Telerik team

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[s]

Hi 
i have used radgrid controls in my vb.net project. Now im modifying my code and using gridview instead of radgrid controls.
but there is an event "NeedDataSource" for radgrid control. Now my doubt is , which event do i need to use for this "NeedDataSource" in gridview events.

Regards,
Sam

[Princy]

Hello Samantha,

In GridView you can populate the grid using SimpleDataBinding and then call the DataBind method on the first page load or after any data operation. On the other hand, NeedDataSource event fires each time when RadGrid needs to be bound to a data source. Hope this helps.

Thanks,
Princy.

[Jayesh Goyani]

Hi Sam,

There is not any similar event ("NeedDataSource") available for GridView.

Only RadGrid have "NeedDataSource" event and this event you can assign Datasource to RadGrid.

Advantage of this event is user can assign only one time assign a DataSource to RadGrid and RadGrid called this event after (Sorting ,Pagging,Filter..etc.) automatically.

If we need to call this event explicitly then we call by this "RadGrid.Rebind();"

http://www.telerik.com/help/aspnet/grid/radgrid-telerik.webcontrols.radgrid-needdatasource_ev.html

http://www.telerik.com/help/aspnet/grid/grdcommandsthatinvokerebindimplicitly.html

Thanks,
Jayesh Goyani