Neat session state trick

Just thought I'd share a neat little bit of code for handling session state in ASP.NET.

The trick is to create a class that keeps it's own sessionstate, like this:

public class CustomerSession
{
    private string mName = "";
    private string mTelephone = "";

    // To enshure unique session key
    private static string mGuid = "PlaceGUIDHere";

    public string Name
    {
        get { return mName; }
        set { mName = value; }
    }

    public string Telephone
    {
        get { return mTelephone; }
        set { mTelephone = value; }
    }

    private CustomerSession() { }

    public static CustomerSession GetInstance(HttpSessionState session)
    {
        CustomerSession o = (CustomerSession)session[mGuid];
        if(o == null) {
            o = new CustomerSession();
            session[mGuid] = o;
        }

        return o;
    }
}

Then you can save data in session like this:

protected void btnSave_Click(object sender, EventArgs e)
{
   CustomerSession data = CustomerSession.GetInstance(Session);
   data.Name = txtName.Text;
   data.Telephone = txtTelephone.Text;
}

I heard about this in .NET Rocks! episode 82 where Richard Hale Shaw where speaking of his way of storing session state in a safe way. It's at about 54 minutes into the podcast episode if you want to check it out for yourself =)