can't use a viewstate variable on page init

[paulcis]

I am trying to find a way of passing the number of dynamic controls I have created in the page init phase and be able to read it on post back so I can recreate the controls.
I tried session["myvariable"] = num as well but couldn't get that to work either




protected override void OnInit(EventArgs e)
{
base.OnInit(e);


if (!IsPostBack)
{



int x = 1;



this.NumberOfControls = 17; ........




protected int NumberOfControls
{
get { return (int)ViewState["NumControls"]; }
set { ViewState["NumControls"] = value; }

}

after postback
I want read the variable NumberOf Controls
but error says it is a null reference

protected void Button1_Click(object sender, EventArgs e)
{

int count = this.NumberOfControls;