Load is after binding, but Init is before. Load is before any event handler
you have wired, however. This is why code like this:

Page_Load()
{
   DataSet ds = GetSomeData();
   GridView1.DataSource = ds;
   GridView1.DataBind();
}

will nix any things you are trying to save back and you will save original
values to the database. It is also the reason for !Page.IsPostBack.