RadGrid viewstate

[Satya]

Hi,

I am using RadGrid and doing a simple data binding to bind to a list. The enableviewstate is set to true. But the grid does not populate data after a postback. Am I doing any thing wrong.

[Sebastian]

Hello Satya,

Can you please verify that you are using advanced data-binding with NeedDataSource event handling when passing the list as a grid source? This should ensure that the grid data will be visualized as expected on subsequent requests to the server.

Best regards,
Sebastian
the Telerik team

[Satya]

Hi Sebastian,
thanks for your reply. The only problem I had with needadatasource is that with that event I am always hitting the database. My idea is just load the data once in the PageLoad and i wish the radgrid uses viewstate and populates on the postbacks like simple dropdown control. Is there a way to acheive that.

Thanks
Satya

[Sebastian]

Hi Satya,

As you can see from the description of the demo which I referenced, the NeedDataSource event is raised when the control has to be bound to data, for instance when paging or sorting operation are triggered, and this is done automatically for you. If you do not want to hit the database when this happens, consider caching the grid data source and retrieve the data from the cache at a later stage.

The other solution would be to use simple binding with DataBind() calls in the same manner as you will do with a standard MS GridView control. In this situation you will have to bind the grid manually when certain operations like sorting, paging, etc. are processed. Bear in mind that in this case advanced operations like grouping, custom edit forms, etc. are not supported by our AJAX web grid.

Regards,
Sebastian
the Telerik team