Question

i have an issue with creating an object in ASP.net

My Page Load function is:

public partial class hangMen : System.Web.UI.Page
{
abc ltr;
Words word = null;
static Label [] lbl = null;
static Button[] btn = null;
Game game;

protected void Page_Load(object sender, EventArgs e)
{

        if (Page.IsPostBack)
        {
            show_current_word();
            SetBord();

        }
        else
        {
            SetBord();
            SetWords(); 


        }

}
}

My issue is:
Iam not sure where should i put the
game = new Game();

if i put it in the else part so i get null reference exception.
and i also dont want to create this oject every post-back.

this object count the player score and the times that click “Hint” and make a wrong

any ideas??

Answer 1

If I understand correctly, you want to keep a instance of the Game object through postbacks…

For that I recommend you use the Session object

Saving to the Session:

Session["GameObj"] = game;

Restoring it in next postback:

protected void Page_Load(object sender, EventArgs e)
{
   if (Session["GameObj"] != null)
   {
       game = (Game) Session["GameObj"];
   }
    ...

Of course there are other options such as saving it in the ViewState. You should read about them and see which one better suits your needs