SPUtility.GetPrincipalsInGroup method throws Thread was being aborted error when SPGroup Name is passed

Question

Hello,
I am getting 'Thread was being aborted - Unable to evaluate expression because
the code is optimized or a native frame is on top of the call stack' error
when I use 'SPUtility.GetPrincipalsInGroup' method.
bool bReachedMaxCount = false;
SPPrincipalInfo[] _spPrincInfoColl = SPUtility.GetPrincipalsInGroup(web, groupName, Int32.MaxValue - 1, out bReachedMaxCount);
We have both SharePoint groups (SPGroup) & Active Directory groups in our site.
I am checking if logged in user has access to the group name that I am passing here as 'groupName'.
Code works without any error when I pass 'domain name' as 'groupName' e.g. (Domain\\usergroup) but the same throws error when I pass SharePoint groups (SPGroup) name.
Both type of these groups have at least 'Read' permission on site.
I have this code inside 'try-catch' block and hence I am able to catch that thread aborted error.
What could be the reason for this error? I don't get any call stack and all other properties of exception object are either null or with garbage values.
I am having SP2010 foundation, VS2012 and .Net4.5 installed on my machine.
Kindly suggest on this. Thank you.
Sagar S.

Answer 1

I think the RunWithElevatedPrivilages is not working correctly. I believe that the new site and web objects need to be opened within elevatedprivilages to work. it looks like the way your code is working the SPsite and SPweb objects are getting opened before
the RunWithElevatedPrivilages give this a try and see if your result changes.
bool IsUserInGroup = false;
try
SPSecurity.RunWithElevatedPrivileges(() =>
Guid siteId = SPContext.Current.Site.ID;
Guid webId = SPContext.Current.Web.ID;
using (SPSite newSite = new SPSite(siteId)) {
using (SPWeb newWeb = newSite.OpenWeb(webId)){
bool bReachedMaxCount = false;
SPPrincipalInfo[] _spPrincInfoColl = SPUtility.GetPrincipalsInGroup(newWeb, "TestGroup", Int32.MaxValue - 1, out bReachedMaxCount);
if (_spPrincInfoColl.Where(a => a.LoginName == username).Count() > 0)
IsUserInGroup = true;
}//close web
}//close site
catch (Exception ex)
LogManager.LogMessage(ex.Message.ToString());
Alex