protected void btn_adddoctor_Click( object sender, EventArgs e ) { //defaultstatus(); string did = this.txtbox_did.Text; string name = this.txtbox_name.Text; string gender = this.txtbox_gender.Text; string tempage = this.txtbox_age.Text; //int age = int.Parse(this.txtbox_age.Text); if ( did.Length > 0 && name.Length > 0 && gender.Length > 0 && tempage.Length > 0 ) { BusinessTier.Admin admin = new BusinessTier.Admin(); Data.DataBase.doctorsDataTable table = new Data.DataBase.doctorsDataTable(); table = admin.SearchDoctorByID(did); if ( table.Rows.Count > 0 ) { this.lbl_idwarning.Text = "This ID is already exsit"; this.lbl_idwarning.BackColor = System.Drawing.Color.Red; } else { int age = int.Parse(tempage); admin.AddDoctor(did, name, gender, age); this.gv_doctorview.DataSource = admin.SelectAllDoctors(); this.gv_doctorview.DataBind(); } } else { errorWarning(); } }