Problem with RadScheduler, WebService & Session State

[Gordon Buxton]

I have a problem with webservice binding of RadScheduler on an ASP.NET forms application.  I need to be able to access Session state from my webservice code, and sometimes it works and sometimes it doesn't.

Specifically the client event OnClientResourcesPopulating does not maintain session state - I presume because it's not passing the current session state cookie to the webservice call.

I have set up a sample project showing the problem, which I set up using the example here: http://www.telerik.com/help/aspnet-ajax/scheduler-webservicebinding.html

The key parts are that in my Default.aspx I set a session variable like this:

namespace RSWSTest

{

    public partial class Default : System.Web.UI.Page

    {

        protected void Page_Load(object sender, EventArgs e)

        {

            if (!Page.IsPostBack)

            {

                Session["TestSessionValue"] = "MyTestValue";

            }

        }

    }

}

The page has a RadScheduler on it, configured to call a webservice.  Here's a snippet from the webservice code:

        [WebMethod(EnableSession=true)]

        public IEnumerable<ResourceData> GetResources(SchedulerInfo schedulerInfo)

        {

            object v = Session["TestSessionValue"]; //-- THIS RETURNS NULL

            Session["WS_GetResourcesCalled"] = true; //-- THIS WORKS BUT NOT VISIBLE IN SUBSEQUENT CALLS

            return Controller.GetResources(schedulerInfo);

        }

        

        [WebMethod(EnableSession=true)]

        public IEnumerable<AppointmentData> GetAppointments(SchedulerInfo schedulerInfo)

        {

            object v = Session["TestSessionValue"]; //-- THIS RETURNS "MyTestValue"

            Session["WS_GetAppointmentsCalled"] = true;

            return Controller.GetAppointments(schedulerInfo);

        }

As you can see from my comments - it appears that the GetResources function starts a new session every time it is called, whilst the GetAppointments function seems to work as expected.

I need to find a solution to this as I have session-based user security and I want to return different things based on which user is stored in the current session.

I can't attach my test solution because it'll only let me post image files - but I can email it to someone if it would help - it's only 19k zipped!

[Plamen]

Hello,

 I possible thing that may be causing the unusual behavior is the Mode of the resource Population. After setting the it to ClientSide as in the code below it worked as expected:

<telerik:RadScheduler ID="RadScheduler1" runat="server" Height=""HoursPanelTimeFormat="htt"
        ValidationGroup="RadScheduler1" SelectedView="WeekView"SelectedDate="2012-02-02"
  TimeZoneOffset="03:00:00" StartEditingInAdvancedForm="false">
        <WebServiceSettings Path="SchedulerWebService.asmx"ResourcePopulationMode="ClientSide" />
    </telerik:RadScheduler>

Hope this will help you solve the issue. 

All the best,
Plamen
the Telerik team