Question

how can I read from entity Framework?

I use this to insert items:

    public void Insert()
    {
        using (HistoryContainer db = new HistoryContainer())
        {
            HistoryData e = new HistoryData();
            e.MP = IpAddress;
            e.Number = OtherPartyNumber;
            e.DateTimeStart = DateTime.Now;
            e.Duration = duration;
            e.TypeDescription = type;
            e.text = e.text;
            db.AddToHistoryDataSet(e);
            db.SaveChanges();
        }
    }

I tried this to read them:

    public virtual IEnumerable<HistoryContainer> ReadFirst()
    {
        using (HistoryContainer x = new HistoryContainer())
        {
            foreach (var item in HistoryData.where(b => b.MP == IpAddress))
            {
                _history.Add(new HistoryItem(item));
            } 
        }
    }

But it didn’t work. What’s wrong?
Thanks.

Answer 1

   public virtual HistoryData ReadFirst()
    {
        using (HistoryContainer db = new HistoryContainer())
        {
            return db.HistoryData.Where(x => x.MP == IpAddress).FirstOrDefault();
        }
    }