Populate list from linq query result

Question

I have the following code, I'm returning results that are associated with the userId, I then want to loop through the results and build a collection and return it back to the UI.

 public List<UserEmails> LoadUsersInbox(Int64 userId, int status)
    {
        List<UserEmails> userEmails = null;

        using (var sqlCon = new SqlConnection(Context.ReturnDatabaseConnection()))
        {
            var emails = sqlCon.Query<UserEmailEntity>(@"SELECT e.EmailId, e.ItemId, u.Username as FromUserName, e.EmailReceived
                                                   FROM User_Emails e
                                                   INNER JOIN User_Profile u on e.FromUserId = u.UserId
                                                   WHERE ToUserId = @userId and EmailStatus = @Status",
                                                   new { ToUserId = userId, Status = status }).OrderBy(d => d.EmailReceived);

            foreach (var item in emails)
            {
                // loop through and build and List of UserEmails
            }
        }

        return userEmails;
    }

But I can't figure out the syntax for it, can some one help me please.

Answer 1

You can transform the list without going to the foreach loop. You do this with the Select statement. I am not able to verify this (thus untested code), but it ought to work if you make do this:

public List<Int64> LoadUsersInbox(Int64 userId, int status)
{
    using (var sqlCon = new SqlConnection(Context.ReturnDatabaseConnection()))
    {
       return sqlCon.Query<UserEmailEntity>
            (@"SELECT e.EmailId, e.ItemId, u.Username as FromUserName, e.EmailReceived
               FROM User_Emails e
               INNER JOIN User_Profile u on e.FromUserId = u.UserId
               WHERE ToUserId = @userId and EmailStatus = @Status",
               new { ToUserId = userId, Status = status })
            .OrderBy(d => d.EmailReceived)
            .Select(usrEmlEnt => usrEmlEnt.EmailId);
    }
    return new List<Int64>();
}