how i can insert more than one rows into more than one tables?? ( in one mehtod ) when user click 'Send Message Button'

Question

hi all , i want to know how i can insert many rows into many tables in one method , such as the following Scenario : 1 - if u want to send compose message to more than one Receiver , u select more than receiver( Receiver table) , and attach more than Files ( File Table) ...... etc , in one method . how ?? any example? plz im new programmer