Get All Form Fields value

Hello i have make form using  sap.ui.layout.form.SimpleForm and form contain near about 30-35 textbox and i need to get all textbox value when i submit form.

i have idea get textbox value using it's ID like

$('#textboxid').val();

but it's hard process.is there any function i get all textbox , dropdown and etc form fields values.

Please help me.