Rank 1
I'm trying to upgrade a web part I wrote from the old telerik controls to the new Prometheus controls. I've deployed the DLL and added the HTTP handler entry to my web.config and added a script manager object to the Controls collection before my RadCalendar object.
This is the error I'm getting:
Object reference not set to an instance of an object. at Telerik.Web.UI.WebResource.Exists(String path, String applicationPath)
at Telerik.Web.UI.RadScriptManager.OnPreRender(EventArgs e)
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.WebControls.WebParts.WebPart.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Control.PreRenderRecursiveInternal()
at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)
Any help would be greatly appreciated.
5 Answers, 1 is accepted
Rank 1
In case it's important, here's the relevant section from my web.config:
<httpHandlers>
<remove verb="GET,HEAD,POST" path="*" />
<add verb="GET,HEAD,POST" path="*" type="Microsoft.SharePoint.ApplicationRuntime.SPHttpHandler, Microsoft.SharePoint, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" />
<add verb="OPTIONS,PROPFIND,PUT,LOCK,UNLOCK,MOVE,COPY,GETLIB,PROPPATCH,MKCOL,DELETE,(GETSOURCE),(HEADSOURCE),(POSTSOURCE)" path="*" type="Microsoft.SharePoint.ApplicationRuntime.SPHttpHandler, Microsoft.SharePoint, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" />
<add verb="*" path="Reserved.ReportViewerWebControl.axd" type="Microsoft.Reporting.WebForms.HttpHandler, Microsoft.ReportViewer.WebForms, Version=8.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" />
<add path="Telerik.Web.UI.WebResource.axd" verb="*" type="Telerik.Web.UI.WebResource, Telerik.Web.UI" validate="false" />
</httpHandlers>
I'm not sure where the error comes from. It could be that for some reason RadScriptManager cannot identify a resource that should be embedded in an assembly. You can check if this is the problem by using ScriptManager instead.
Looking forward to your reply,
Erjan Gavalji
the Telerik team
Instantly find answers to your questions at the new Telerik Support Center
Rank 1
[InvalidOperationException: Script controls may not be registered before PreRender.]
System.Web.UI.ScriptControlManager.RegisterScriptControl(TScriptControl scriptControl) +236
System.Web.UI.ScriptManager.RegisterScriptControl(TScriptControl scriptControl) +99
Telerik.Web.UI.RadWebControl.RegisterScriptControl() +41
Telerik.Web.UI.RadCalendar.OnPreRender(EventArgs e) +21
System.Web.UI.Control.PreRenderRecursiveInternal() +86
System.Web.UI.Control.PreRenderRecursiveInternal() +170
System.Web.UI.WebControls.WebParts.WebPart.PreRenderRecursiveInternal() +62
System.Web.UI.Control.PreRenderRecursiveInternal() +170
System.Web.UI.Control.PreRenderRecursiveInternal() +170
System.Web.UI.Control.PreRenderRecursiveInternal() +170
System.Web.UI.Control.PreRenderRecursiveInternal() +170
System.Web.UI.Control.PreRenderRecursiveInternal() +170
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2041
I think that the information/linked resources in the following public forum post will help you address the problem you are currently facing:
http://www.telerik.com/community/forums/thread/b311D-bddkem.aspx
You may also perform advanced search in the public forums to find more results discussing similar type of error and its resolution.
Best regards,
Stephen
the Telerik team
Instantly find answers to your questions at the new Telerik Support Center
Rank 1
I assume you run WSS3 SP1 or MOSS SP1. If not, do not expect ASP.NET AJAX to function with SP. Try adding the script manager OnInit of your web part.