protected void Page_Load(object sender, EventArgs e) { int x = Convert.ToInt32(Request.QueryString["STDID"].ToString()); TxtID.Text = x.ToString(); TxtID.Enabled = false; if (Page.IsPostBack == false) { List <StudentEntity> StdList = StudentBusiness.DetailStdBusiness(x); TxtName.Text = StdList[0].NAME.ToString(); TxtSurName.Text = StdList[0].SURNAME.ToString(); TxtNumber.Text = StdList[0].NUMBER.ToString(); TxtPhoto.Text = StdList[0].PHOTO.ToString(); TxtPassword.Text = StdList[0].PASSWORD.ToString(); } }