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Panelbar error

2 posts, 0 answered
  1. Bachar Zeidan
    Bachar Zeidan avatar
    67 posts
    Registered:
    01 Jul 2010
    21 Mar 2011
    Link to this post
    Hi, sometimes I receive this error, What can be causing this?
    Thank you,
    Bachar

    E' stata generata un eccezione. Messaggio Value cannot be null or empty.
    Parameter name: handler. Metodo o funzione :Void AddEvent(System.String, System.String). Dettaglio Errore:   at System.Web.UI.ScriptComponentDescriptor.AddEvent(String name, String handler)
       at Telerik.Web.ScriptObjectBuilder.DescribeComponent(Object instance, ScriptComponentDescriptor descriptor, IUrlResolutionService urlResolver, IControlResolver controlResolver)
       at Telerik.Web.UI.ControlItemContainer.DescribeComponent(ScriptComponentDescriptor descriptor)
       at Telerik.Web.UI.RadPanelBar.DescribeComponent(ScriptComponentDescriptor descriptor)
       at Telerik.Web.UI.RadDataBoundControl.Telerik.Web.IControl.DescribeComponent(ScriptComponentDescriptor descriptor)
       at Telerik.Web.UI.ScriptRegistrar.GetScriptDescriptors(Control control)
       at Telerik.Web.UI.RadDataBoundControl.GetScriptDescriptors()
       at Telerik.Web.UI.RadDataBoundControl.System.Web.UI.IScriptControl.GetScriptDescriptors()
       at System.Web.UI.ScriptControlManager.RegisterScriptDescriptors(IScriptControl scriptControl)
       at System.Web.UI.ScriptManager.RegisterScriptDescriptors(IScriptControl scriptControl)
       at Telerik.Web.UI.RadDataBoundControl.RegisterScriptDescriptors()
       at Telerik.Web.UI.RadDataBoundControl.Render(HtmlTextWriter writer)
       at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
       at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)
       at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)
       at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)
       at System.Web.UI.Control.RenderChildren(HtmlTextWriter writer)
       at System.Web.UI.Control.Render(HtmlTextWriter writer)
       at UserControls_Nav_SitePanelbar.Render(HtmlTextWriter writer) in c:\sites\waterfall\Sitefinity\UserControls\Navigation35\SitePanelbar.ascx.cs:line 127
       at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
       at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)
       at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)
       at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)
       at System.Web.UI.Control.RenderChildren(HtmlTextWriter writer)
       at System.Web.UI.Control.Render(HtmlTextWriter writer)
       at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
       at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)
       at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)
       at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)
       at System.Web.UI.Control.RenderChildren(HtmlTextWriter writer)
       at System.Web.UI.HtmlControls.HtmlForm.RenderChildren(HtmlTextWriter writer)
       at System.Web.UI.HtmlControls.HtmlContainerControl.Render(HtmlTextWriter writer)
       at System.Web.UI.HtmlControls.HtmlForm.Render(HtmlTextWriter output)
       at System.Web.UI.Adapters.ControlAdapter.Render(HtmlTextWriter writer)
       at Telerik.Cms.Web.FormAdapter.Render(HtmlTextWriter writer)
       at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
       at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)
       at System.Web.UI.HtmlControls.HtmlForm.RenderControl(HtmlTextWriter writer)
       at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)
       at System.Web.UI.Control.RenderChildren(HtmlTextWriter writer)
       at System.Web.UI.Control.Render(HtmlTextWriter writer)
       at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
       at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)
       at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)
       at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)
       at System.Web.UI.Control.RenderChildren(HtmlTextWriter writer)
       at System.Web.UI.Page.Render(HtmlTextWriter writer)
       at Telerik.Web.UI.RadAjaxPage.Render(HtmlTextWriter writer)
       at Telerik.Cms.Web.InternalPage.Render(HtmlTextWriter writer)
       at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
       at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)
       at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)
       at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
    System.ArgumentException: Value cannot be null or empty.
    Parameter name: handler
       at System.Web.UI.ScriptComponentDescriptor.AddEvent(String name, String handler)
       at Telerik.Web.ScriptObjectBuilder.DescribeComponent(Object instance, ScriptComponentDescriptor descriptor, IUrlResolutionService urlResolver, IControlResolver controlResolver)
       at Telerik.Web.UI.ControlItemContainer.DescribeComponent(ScriptComponentDescriptor descriptor)
       at Telerik.Web.UI.RadPanelBar.DescribeComponent(ScriptComponentDescriptor descriptor)
       at Telerik.Web.UI.RadDataBoundControl.Telerik.Web.IControl.DescribeComponent(ScriptComponentDescriptor descriptor)
       at Telerik.Web.UI.ScriptRegistrar.GetScriptDescriptors(Control control)
       at Telerik.Web.UI.RadDataBoundControl.GetScriptDescriptors()
       at Telerik.Web.UI.RadDataBoundControl.System.Web.UI.IScriptControl.GetScriptDescriptors()
       at System.Web.UI.ScriptControlManager.RegisterScriptDescriptors(IScriptControl scriptControl)
       at System.Web.UI.ScriptManager.RegisterScriptDescriptors(IScriptControl scriptControl)
       at Telerik.Web.UI.RadDataBoundControl.RegisterScriptDescriptors()
       at Telerik.Web.UI.RadDataBoundControl.Render(HtmlTextWriter writer)
       at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
       at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)
       at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)
       at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)
       at System.Web.UI.Control.RenderChildren(HtmlTextWriter writer)
       at System.Web.UI.Control.Render(HtmlTextWriter writer)
       at UserControls_Nav_SitePanelbar.Render(HtmlTextWriter writer) in c:\sites\waterfall\Sitefinity\UserControls\Navigation35\SitePanelbar.ascx.cs:line 127
       at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
       at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)
       at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)
       at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)
       at System.Web.UI.Control.RenderChildren(HtmlTextWriter writer)
       at System.Web.UI.Control.Render(HtmlTextWriter writer)
       at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
       at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)
       at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)
       at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)
       at System.Web.UI.Control.RenderChildren(HtmlTextWriter writer)
       at System.Web.UI.HtmlControls.HtmlForm.RenderChildren(HtmlTextWriter writer)
       at System.Web.UI.HtmlControls.HtmlContainerControl.Render(HtmlTextWriter writer)
       at System.Web.UI.HtmlControls.HtmlForm.Render(HtmlTextWriter output)
       at System.Web.UI.Adapters.ControlAdapter.Render(HtmlTextWriter writer)
       at Telerik.Cms.Web.FormAdapter.Render(HtmlTextWriter writer)
       at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
       at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)
       at System.Web.UI.HtmlControls.HtmlForm.RenderControl(HtmlTextWriter writer)
       at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)
       at System.Web.UI.Control.RenderChildren(HtmlTextWriter writer)
       at System.Web.UI.Control.Render(HtmlTextWriter writer)
       at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
       at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)
       at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)
       at System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children)
       at System.Web.UI.Control.RenderChildren(HtmlTextWriter writer)
       at System.Web.UI.Page.Render(HtmlTextWriter writer)
       at Telerik.Web.UI.RadAjaxPage.Render(HtmlTextWriter writer)
       at Telerik.Cms.Web.InternalPage.Render(HtmlTextWriter writer)
       at System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter)
       at System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter)
       at System.Web.UI.Control.RenderControl(HtmlTextWriter writer)
       at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
  2. Ivan Dimitrov
    Ivan Dimitrov avatar
    16072 posts
    Registered:
    25 Nov 2016
    21 Mar 2011
    Link to this post
    Hello Bachar,

    Have you modified the SitePanelbar.ascx.cs and its template? In the default code behind the row 127 is comment, but this is from where the issue comes from in your control. What are the changes made to the control - template and code behind?

    Kind regards,
    Ivan Dimitrov
    the Telerik team
2 posts, 0 answered