protected void ddlFaculty_Init(object sender, EventArgs e)
        {
            if (ddlFaculty.Items.Count == 0)
            {
                dt = new DataTier();
                fac = dt.ReadFaculties();

                ddlFaculty.DataSource = fac;

                ddlFaculty.DataValueField = "ID_Facultate";
                ddlFaculty.DataTextField = "Nume_facultate";
                ddlFaculty.DataBind();
                ddlDepartment_Create();
                ddlSpecialization_Create();

            }

        }