Get name from table 1 whose id in table 2 using linq

[renzor]

I want to get the details of some attribute(session,trade,student etc.), and i have their id's in ProgressCard table, using linq.and save the resulting data in XMlI am doing this\[code\] public List<ShowProgressCard> GetCardListToShow() { try { List<ShowProgressCard> CardList = new List<ShowProgressCard>(); using (ProgressCardLINQDataContext c = new ProgressCardLINQDataContext()) { CardList = (from card in c.GetTable<T_PROGRESSCARD>() where card.RecordStatus.Equals(RecordStatus.Active) select new ShowProgressCard { Session=(from session in c.T_SESSIONs where session.Id.Equals(card.SessionId) select session.Name).ToString(), Trade=(from trade in c.T_TRADEs where trade.Id.Equals(card.TradeId) select trade.Name).ToString(), Student=(from student in c.T_STUDENTs where student.Id.Equals(card.StudentId) select student.Name).ToString(), Test=(from test in c.T_TESTs where test.Id.Equals(card.TestId) select test.Name).ToString(), MaxMarks = (from test in c.T_TESTs where test.Id.Equals(card.TestId) select test.MaxMarks).ToString(), MarksObtain=card.MarksObtain.ToString(), Percentage=card.Percentage.ToString("N2") }).ToList<ShowProgressCard>(); } return CardList; } catch { return new List<ShowProgressCard>(); } }\[/code\]but gives me unexpected values..\[code\]<ShowProgressCard><Session>System.Collections.Generic.List`1[System.String]</Session><Trade>System.Collections.Generic.List`1[System.String]</Trade><Student>System.Collections.Generic.List`1[System.String]</Student><Test>System.Collections.Generic.List`1[System.String]</Test><MaxMarks>System.Collections.Generic.List`1[System.Int32]</MaxMarks><MarksObtain>123</MarksObtain><Percentage>0.000000000000000e+000</Percentage></ShowProgressCard>\[/code\]please help me to track the mistakes.