Is Filter Control State Telerik version specific ?

[Shelly Kalra]

Hi,

I'm working on a page where i had used filter control (Telerik.Web.UI_2010_3_1215).
I'm saving state of filter control in database for later retrieval.
However, when I upgraded to the latest Telerik DLL (Telerik.Web.UI_2010_3_1317), state failed to load.
I've used following methods to save & load filter state -

           public string SaveExpression(object state)

        {

            ObjectStateFormatter formatter = new ObjectStateFormatter();

            return formatter.Serialize(state);

        }

 

        public object LoadExpression(string savedState)

        {

            ObjectStateFormatter formatter = new ObjectStateFormatter();

            return formatter.Deserialize(savedState);

        }

So, I wish to know if the state is dll version specific.
Concern here is, if we move to a higher Telerik version in future, we'll no longer be able to retrieve filter state.
Please advice.

[Daniel]

Hello Shelly,

I recommend that you examine the "Save/Load RadFilter expressions" section in the following link:
RadFilter Basics

Let us know if you need more information.

Regards,
Daniel
the Telerik team

[Shelly Kalra]

Thanks.Can you please provide an example of db storing/loading state using BinaryFormatter ?

[Daniel]

Hello Shelly,

You could use the same code you used for ObjectStateFormatter, just set the SettingsFormatter property to RadFilterSettingsFormatter.BinaryFormatter.

RadFilter1.SettingsFormatter = RadFilterSettingsFormatter.BinaryFormatter;

In both cases RadFilter will return Base64 formatted string that you could save to your database.

Regards,
Daniel
the Telerik team

[Shelly Kalra]

Thanks !