Question

I need to query a table with linq and bind the rows returned from the linq query to an object

WebChatDBDataContext dataContext = new WebChatDBDataContext();
var executiveSession= dataContext.ExecutiveSessions.FirstOrDefault(s => s.SessionId == httpcontext.Session.SessionID);
var talkerId = (from cRoom in dataContext.ChatRooms
                where cRoom.ExecutiveId == executiveSession.ExecutiveSessionId
                select cRoom.TalkerId
               );
var msglst = from msgPool in dataContext.MessagePools
             // I want to use talkerId from the previous query
             where msgPool.TalkerId == ???
            select msglst;

thanx

Answer 1

It sounds like you want a join. If you don’t need talkerId for anything else, it’s going to be simplest to do this in a single query:

var executiveSessionId = dataContext.ExecutiveSessions
        .FirstOrDefault(s => s.SessionId == httpcontext.Session.SessionID)
        .ExecutiveSessionId;

var pools = from room in dataContext.Rooms
            where room.ExecutiveId == executiveSessionId
            join pool in dataContext.MessagePools
              on room.TalkerId equals pool.TalkerId
            select pool;