SPSite siteColl = SPContext.Current.Site;

SPWeb site = SPContext.Current.Web;

SPUser user = site.Users[@"Moss\lijierong"];

SPUserToken userToken = user.UserToken;

SPSecurity.RunWithElevatedPrivileges(delegate() {

using (SPSite ElevatedsiteColl = new SPSite(siteColl.ID, userToken)) {

using (SPWeb ElevatedSite = ElevatedsiteColl.OpenWeb(site.ID))

{ //lijierong身份运行

string SiteCollectionOwner = ElevatedsiteColl.Owner.Name;

}

}

});