Question

the below linq query shows me all the result set, instead of filtering it with where clause premalink.PremalinkID == id???

 lstpremalink = dalpremalink.GetUserNewsFeed(UserID);
 var premalinkid = (from p in lstpremalink select p.PremalinkID).Distinct();

    foreach (Int64 id in premalinkid)
    {
   lstprema = (from premalinktags in lstpremalink
                   where premalinktags.PremalinkID == id
                   select premalinktags).ToList(); 
}

lstprema shows all the result set below

Answer 1

lstprema = (from premalinktags in lstpremalink 
            where premalink.PremalinkID == id select premalinktags).ToList();

You iterate by premalinktags but your where clause does not contain that variable! Shouldn’t it be premalinktags.PremalinkID == id instead?