Keeping an object from being recreated and added to Session on page load/postback

[Andy B]

I have the following code inside a page_load event:

DataSet Store = new DataSet();
Session["Store"]=Store;

Every time the page loads, refreshes or the wizard flips from 1 wizardstep
to another, the dataSet is wiped out and reasigned to the Session making it
impossible to get anywhere. How do you stop stuff like this?

 

[gerry]

if ( Session["Store"] == null )
{
DataSet Store = new DataSet();
Session["Store"]=Store;
}