Rad ASP Controls new version

2 posts, 0 answers
  1. Vikas
    Vikas avatar
    2 posts
    Member since:
    Apr 2016

    Posted 05 Apr Link to this post

    I am updating Telerik ASP.NET controls Dlls in my Website from 2015.1.401.45 to 2016.1.201.25 but recevied following exception. Below error appreas for all versions after 2015.1.401.45. 

    System.NullReferenceException: Object reference not set to an instance of an object.
       at Telerik.Web.UI.RadToolBarButton.CreateRenderer()
       at Telerik.Web.UI.RadToolBarItem.get_ItemRenderer()
       at Telerik.Web.UI.RadToolBarItem.AddAttributesToRender(HtmlTextWriter writer)
       at System.Web.UI.WebControls.WebControl.RenderBeginTag(HtmlTextWriter writer)
       at System.Web.UI.WebControls.WebControl.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.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.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 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 Telerik.Web.UI.RadAjaxControl.RenderPageInAjaxMode(HtmlTextWriter writer, Control page)
       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 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. Veselin Tsvetanov
    Admin
    Veselin Tsvetanov avatar
    287 posts

    Posted 07 Apr Link to this post

    Hello Vikas,

    Please make sure that you had followed the 6 easy steps for version upgrade from the following post. If you still experience the same issue, I would suggest you to submit a support ticket, where you could send us a sample runnable project reproducing the error specified.

    Regards,
    Veselin Tsvetanov
    Telerik
    Do you need help with upgrading your ASP.NET AJAX, WPF or WinForms projects? Check the Telerik API Analyzer and share your thoughts.
  3. UI for ASP.NET Ajax is Ready for VS 2017
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