protected void Page_Load(object sender, EventArgs e)
    {
        String[] str = (String[])Session["user"];
        ID = (String)str.GetValue(0);
        int id = Int32.Parse(ID);
        List<String> time = new List<String>();
        DateTime t = DateTime.Today;
        for (int i = 0; i < 48; i++)
        {
            String st = t.ToShortTimeString();
            time.Add(st);
            DropDownList1.Items.Add(st);
         t = t.AddMinutes(30);
        }

          // DropDownList1.DataSource = time;
           //DropDownList1.DataBind();
        //Label1.Text = t.ToShortTimeString();
           if (!Page.IsPostBack)
           {
           MyService.UserWebService uws = new UserWebService();
           uws.Credentials = System.Net.CredentialCache.DefaultCredentials;
           String[] dname = uws.getDepartment(id);
           foreach (String name in dname)
           {
               DropDownList3.Items.Add(new ListItem(name, name));
           }
           }
    }