[Solved] persist settings on radgrid?

[mac]

hi.. I'm trying to follow alon the lines of this white paper. http://www.telerik.com/help/aspnet-ajax/grdsavingsettingsonperuserbasis.html
I have a class file (perist.vb) containing the class. I am confused on how to use the example however
my code behind is as follows . THe class from the white paper  file is verbatim copy/paste

Imports Telerik.Web.ui
Partial Class temp_somepage
    Inherits System.Web.UI.Page
    Dim x As PersistMe

    Protected Sub Page_PreInit(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.PreInit
        If Session("Settings") IsNot Nothing Then
            x.LoadSettings(Session("Settings"))
        End If
    End Sub
    Protected Sub RadGrid1_PreRender(ByVal sender As Object, ByVal e As System.EventArgs) Handles RadGrid1.PreRender
        Session("Settings") = x.SaveSettings
    End Sub
End Class

when trying to run it.. i end up with the object reference not set to object  session("settings") = x.savesettings.
Can you please assist on this as I see I am returning the settings of the grid on savesettings... however I don't see how the GridInstance is to be used.  Thank you.

[mac]

I would like to bump this as I have an update.
I switched to using the profile class but am still experiencing the same problems of trying to use the SaveSettings() function. my vb code is pasted. What am i doing wrong? The function is not calling for any params....so how would it know that I am targting radgrid1?

Imports Telerik.Web.ui
Public Class temp_somepage
    Inherits System.Web.UI.Page
    Dim x As PersistMe

    Protected Sub Page_Init(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Init
        If Not String.IsNullOrEmpty(Profile.Grid1) Then
            x.LoadSettings(Profile.Grid1)
        End If
    End Sub

    Protected Overrides Sub Render(ByVal writer As System.Web.UI.HtmlTextWriter)
        MyBase.Render(writer)
        If String.IsNullOrEmpty(Profile.Grid1) Then
            Profile.Grid1 = x.SaveSettings
' Crash every time with Object reference not set to an instance of an object.

        End If
    End Sub

End Class

[Yavor]

Hi mac,

I suspect the problem is rooted in trying to access the session values in the Init event handler. You can put a break point there, and verify that the values are available at that stage. If they are not, you can try loading the settings in the PageLoad/grid_PreRender event handlers.

Kind regards,
Yavor
the Telerik team

Instantly find answers to your questions on the new Telerik Support Portal.
Check out the tips for optimizing your support resource searches.