protected void Page_Load(object sender, EventArgs e) { if (Session["role"] != null) { role = Session["role"].ToString(); if (role == "Incharge" || role == "Teacher") { adminNo = null; } else if (role == "1" || role == "2" || role == "3") { adminNo = Session["AdminNo"].ToString(); } } if (!IsPostBack) { tripType = Request.QueryString["tripType"]; tripObj = tripDao.getTrip(tripType); count = tripDao.count; listId = tripDao.getSignedUpTrip(adminNo); foreach (var i in listId) { System.Diagnostics.Debug.Write(i + "_"); } List <String> countryList = tripDao.getCountry(); ddlAddLocation.DataSource = countryList; ddlAddLocation.DataBind(); ddlAddLocation.Items.Insert(0, new ListItem("--Select--", "-1")); if (role == "") { System.Diagnostics.Debug.WriteLine("its empty"); } else if (role == null) { System.Diagnostics.Debug.WriteLine("its null"); } else { System.Diagnostics.Debug.WriteLine(role); } } }