iFinity

i need to implement the custom ifinity sitemap provider ..

i am following the instruction from ifinity ..

i got this error while implementing "The type initializer for 'iFinity.DNN.Modules.Tagger.Data.DataProvider' threw an exception."  inner Exception is "Value cannot be null.\r\nParameter name: type"

the error line

new TaggerController();TagInfoCol tags = tc.GetTagsForPortal(portalAlias.PortalID, _options, _maxNumTags); where paasing potalid=0,_option=iFinity.DNN.Modules.Tagger.TaggerController.TagCloudGetOptions.GetMostPopular,_maxNumTags=0

Please tell me the solution

Thanks for your quick response...But still i got the same error

stact trace ="   at iFinity.DNN.Modules.Tagger.Data.DataProvider.Instance()\r\n   at iFinity.DNN.Modules.Tagger.TaggerController.GetTagsForPortal(Int32 portalId, TagCloudGetOptions tagOptions, Int32 numTags)\r\n   at TestSiteMapProvider.TestGoogleSiteMapProvider.GetTagListUrls(ModuleInfo mod, TabInfo tab, PortalAliasInfo portalAlias) in D:\\SampleSiteMapProvider\\TestGoogleSiteMapProvider.cs:line 102\r\n   at TestSiteMapProvider.TestGoogleSiteMapProvider.GetSitePagesForTagList(PortalAliasInfo portalAlias, TabInfo tab) in D:\\SampleSiteMapProvider\\TestGoogleSiteMapProvider.cs:line 81\r\n   at TestSiteMapProvider.TestGoogleSiteMapProvider.SitePagesForTab(PortalAliasInfo portalAlias, TabInfo tab) in D:\\SampleSiteMapProvider\\TestGoogleSiteMapProvider.cs:line 37\r\n   at iFinity.DNN.Modules.GoogleSiteMap.GoogleSiteMapProvider.GetModuleSpecificPages(PortalAliasInfo portalAlias, TabInfo ti, Locale locale, GoogleSiteMapProviderCollection providers, Int32 sitemapNum, Int32 urlCount, Int32 startingCount, Int32 endingCount)\r\n   at iFinity.DNN.Modules.GoogleSiteMap.GoogleSiteMapProvider.GetSitePages(Int32 sitemapNum, Int32 startingIndex, Int32 endingIndex)\r\n   at iFinity.DNN.Modules.GoogleSiteMap.GoogleSiteMapProvider.WriteSitemapPages(XmlTextWriter writer, Int32 sitemapNum)"

I am not included the Tagger module and providers.

Please help me

thank you for your response ....but still have same problem ..i have used the taggoogleprovider not custom module and got the same problem

when used "Tag List" as one module definition..

please look this code

 switch (modDefFriendlyName.ToLower())
                    {
                        case "tag list":
                            siteUrls.AddRange(GetTagListUrls(mod, tab, portalAlias));
                            break;
                    }

if modDefFriendlyName is "tag list" then only go to the GetTagListUrls() method

and inside this method have these error lines

"List<SitePage> tagListUrls = new List<SitePage>();  //initalise new value           
            //first get the list of tags in the portal
            TaggerController tc = new TaggerController();
            TagInfoCol tags = tc.GetTagsForPortal(portalAlias.PortalID, _options, _maxNumTags);
           "

please check this one and give me a solution