InfoPath Dev

do we have any other option, you will have to use file attachment control

check this

in the project explorer -> right click the project and click add class

you can write a class and add these functions to that class, and later on use that class in all the forms and refer to your functions. NOTE: you will have to include that class in all the forms

what exactly do you want, if you just want the name and related stuff, you can create a data connection to the doc library. tools -> data connections -> recieve ... Please let us know what exactly do you want

check this

you need access to the template, and on the template right click and click design.

update and save are two different things, update just sort of refreshes the data connections and checks whether there has been a change in the form.. while as save actually saves the form.. I dont think there is any way of closing the form after saving the form. unless of course if you do it through code

set security level of the form to full trust.. tools -> form options -> security and trust -> security settings -> full trust

there is no onclick event on drop down list, what you can do is, write the code on the changed event of option button, since this is going to be editable only when a certain option is selected. i guess your best bet is to populate it on Changed event of option button.