F is null or not an object

[Achuthan]

Hello All,
        I created radscheduler in asp.net application, i bind the sql table values in to radscheduler. in month view for particular day i have more than 50 appointments there, so radscheduler only shows 5 appointments and they show more option, if i click the more option in month view it will throw the f is null or not an object error
       Could anyone face this issue before please reply me, i want to resolve this

Thanks.

[Kalina]

Hi Achuthan,

Indeed, SharePoint used to have issues while loading scripts dynamically upon Ajax request.
However this was fixed within the Microsoft Office 2010 October cumulative update.

In case you haven't applied this update, I am suggesting you register the RadScheduler scripts from code-behind at CreateChildControls event of the WebPart:

[ToolboxItemAttribute(false)]
public class Test2RS : WebPart
{
    // Visual Studio might automatically update this path when you change the Visual Web Part project item.
    private const string _ascxPath = @"~/_CONTROLTEMPLATES/TabStripGrid/Test2/Test2UserControl.ascx";

    protected override void CreateChildControls()
    {
        Control control = Page.LoadControl(_ascxPath);
        Controls.Add(control);

        RegisterScripts();
    }

    protected virtual void RegisterScripts()
    {

        string assemblyFullName = System.Reflection.Assembly.GetAssembly(typeof(RadScheduler)).FullName;
        ScriptManager scriptManager = ScriptManager.GetCurrent(Page);

        if (scriptManager != null)
        {
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Common.Core.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Common.jQuery.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Common.jQueryPlugins.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Common.Popup.PopupScripts.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Common.Navigation.NavigationScripts.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Common.TouchScrollExtender.js" });

            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Scheduler.ClientRendering.ClientRendering.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Scheduler.ClientRendering.BlockCollection.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Scheduler.ClientRendering.HorizontalBlockCollection.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Scheduler.ClientRendering.RenderingManager.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Scheduler.ClientRendering.ResourceStyleMapping.js" });


            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Scheduler.ClientRendering.ResourceStyleMappingCollection.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Menu.RadMenuScripts.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Menu.ContextMenu.RadContextMenuScripts.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Input.TextBox.RadInputScript.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Input.DateInput.RadDateInputScript.js" });

            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Input.InputManager.RadInputManagerScript.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Input.MaskedTextBox.RadMaskedInputScript.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Input.NumericTextBox.RadNumericInputScript.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Calendar.RadTimeViewScripts.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Calendar.RadCalendarCommonScript.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Calendar.RadCalendarScript.js" });

            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Calendar.RadPickersPopupDirectionEnumeration.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Calendar.RadDatePicker.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Calendar.RadDateTimePickerScript.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Calendar.RadTimeViewScripts.js" });


            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.ComboBox.RadComboBoxScripts.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Scheduler.Helpers.DateTime.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Scheduler.RadSchedulerScripts.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Scheduler.RecurrenceEditor.RecurrenceEditor.js" });

            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Scheduler.ContextMenu.Plugin.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Scheduler.Views.Week.Model.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Scheduler.Views.Week.GroupedByResource.Model.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Scheduler.Views.Week.GroupedByDate.Model.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Scheduler.Views.MultiDay.Model.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Scheduler.Views.MultiDay.GroupedByResource.Model.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Scheduler.Views.MultiDay.GroupedByResource.Model.js" });

            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Scheduler.Views.Day.Model.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Scheduler.Views.Day.GroupedByResource.Model.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Scheduler.Views.Month.Model.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Scheduler.Views.Month.GroupedByResource.Model.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Scheduler.Views.Month.GroupedByDate.Model.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Scheduler.Views.Timeline.Model.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Scheduler.Views.Timeline.GroupedByResource.Model.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Scheduler.Views.Timeline.GroupedByDate.Model.js" });
            scriptManager.Scripts.Add(new ScriptReference() { Assembly = assemblyFullName, Name = "Telerik.Web.UI.Scheduler.Scheduling.AdvancedTemplate.js" });


        }
    }
}

The attached sample is based on the project that you have sent within a support ticket.

Regards,
Kalina
the Telerik team

[Achuthan]

Thanks Kalina,
          It's working now

[Michael]

Hi,

has this problem really been solved in an cumulative Update? I can't find any informations for that fix. We still have sometimes similar problems, even with the Service Pack 1. 

Regards,
Michael

[Kate]

Hi Michael,

Did you try registering the scripts as suggested in the previous post? What you need to do is get the needed scripts (depending on the controls that you use) and register them manually. Here you can get more information on which scripts you need to use for the different controls. 

Regards,
Kate
the Telerik team