Data Table from session

DataSet ds = new DataSet();

        DataTable dt = new DataTable();
        
        dt.Columns.Add("Name");
        
        dt.Rows.Add("Affan");
        dt.Rows.Add("osama");
        dt.Rows.Add("faraz");
        dt.Rows.Add("saqib");

        ds.Tables.Add(dt);
        
        //you can contain anything in session but its a bad practice to store huge amount of data in session like dataset or datatable

        Session["AddDataTable"] = ds;
        
//Binding gridview
        GridView1.DataSource = ((DataSet)Session["AddDataTable"]).Tables[0];
        GridView1.DataBind();