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Problem with Update

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Scheduler

This is a migrated thread and some comments may be shown as answers.

Steve asked on 21 Aug 2008, 03:21 PM

I'm using the scheduler against a SharePoint List using an SPDataSource like this:

    
                        <sharepoint:SPDataSource DataSourceMode="List" 
        
                            Scope="Default" UseInternalName="true"   
        
                            IncludeHidden="true"   
        
                            ID="spdsCalendar" runat="server">  
        
                            <SelectParameters> 
        
                                <asp:Parameter Name="ListName" DefaultValue="TravelCalendarList" /> 
        
                            </SelectParameters> 
        
                            <InsertParameters> 
        
                                <asp:Parameter Name="ListName" DefaultValue="TravelCalendarList" /> 
        
                            </InsertParameters> 
        
                            <UpdateParameters> 
        
                                <asp:Parameter Name="ListName" DefaultValue="TravelCalendarList" /> 
        
                            </UpdateParameters> 
        
                            <DeleteParameters> 
        
                                <asp:Parameter Name="ListName" DefaultValue="TravelCalendarList" /> 
        
                            </DeleteParameters> 
        
                        </sharepoint:SPDataSource>

I have the Update wired up correctly:

    
                    protected void RadScheduler1_AppointmentUpdate(object sender, AppointmentUpdateEventArgs e)  
        
                    {  
        
                        try 
        
                        {  
        
                            if ((e.ModifiedAppointment.Subject == String.Empty) | (e.ModifiedAppointment.Start > e.ModifiedAppointment.End))  
        
                            {  
        
                                e.Cancel = true;  
        
                            }  
        
                            else 
        
                            {  
        
                                e.Appointment.Subject = e.ModifiedAppointment.Subject;  
        
                                e.Appointment.Start = e.ModifiedAppointment.Start;  
        
                                e.Appointment.End = e.ModifiedAppointment.End;  
        
                            }  
        
                        }  
        
                        catch (Exception ex)  
        
                        {  
        
                            lblError.Text = ex.Message.ToString();  
        
                        }  
        
                    }

When I click Update I get the follow error:

Exception Details: System.NullReferenceException: Object reference not set to an instance of an object.

Source Error:
System.NullReferenceException: Object reference not set to an instance of an object.


            An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


            [NullReferenceException: Object reference not set to an instance of an object.]
   Telerik.Web.UI.Scheduling.DataSourceViewSchedulerProvider.OnDataSourceOperationComplete(Int32 count, Exception e) +16
   System.Web.UI.DataSourceView.Update(IDictionary keys, IDictionary values, IDictionary oldValues, DataSourceViewOperationCallback callback) +69
   Telerik.Web.UI.Scheduling.DataSourceViewSchedulerProvider.Update(RadScheduler owner, Appointment appointmentToUpdate) +192
   Telerik.Web.UI.Scheduling.AppointmentController.UpdateAppointment(Appointment originalAppointment, Appointment modifiedAppointment) +363
   Telerik.Web.UI.RadScheduler.UpdateAppointmentInline(Boolean removeExceptions) +195
   Telerik.Web.UI.RadScheduler.OnBubbleEvent(Object source, EventArgs args) +235
   System.Web.UI.Control.RaiseBubbleEvent(Object source, EventArgs args) +35
   System.Web.UI.WebControls.LinkButton.OnCommand(CommandEventArgs e) +115
   System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument) +132
   System.Web.UI.WebControls.LinkButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +7
   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +11
   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +177
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1746

I have written out the values from ModifiedAppointment to a label and it all looks correct. Both Insert and Delete work fine.

Anyone have an ideas as to what's going wrong with the Update?

cheers,

Steve

10 Answers, 1 is accepted

answered on 22 Aug 2008, 11:24 AM

I tried setting some hardcoded values to the list inside the Update event like below:

    
                    protected void RadScheduler1_AppointmentUpdate(object sender, AppointmentUpdateEventArgs e)  
        
                    {  
        
                        SPWeb oWeb = SPContext.Current.Web;  
        
                        SPList oList = oWeb.Lists["TravelCalendarList"];  
        
                        SPListItem itm = oList.GetItemById(1);  
        
                        if (null != itm)  
        
                        {  
        
                            itm["Location"] = "test";  
        
                            itm["Title"] = "test";  
        
                            itm.Update();  
        
                            RadScheduler1.Rebind();  
        
                        }  
        
                    }

The SharePoint List item gets updated fine but I still get the error. To reiterate, both Insert and Delete work fine.

Object reference not set to an instance of an object

answered on 28 Aug 2008, 08:52 AM

Hello Steve,

Actually, there's no need to request this from us (Telerik), but from the person responsible for your company's purchase. Here's the situation. We have four product lines:

RadControls for ASP.NET AJAX
RadControls for ASP.NET
Telerik Reporting
RadControls for WinForms

If you are added (from the person responsible for your company's purchase) as a licensed developer to RadControls for ASP.NET only, you won't have access from your Client.net account to the rest of the product lines.

For your convenience, I have added you as licensed developers to RadControls for ASP.NET AJAX license that Steve Ke has purchased.

Greetings,
Paul
the Telerik team

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