I want to code something like. the user can select number in dropdown from 1 to 10
if the user selects 2, two sets of contact information (such as address, city, state, zip) textbox will be shown,
and one submit button at the bottom.
Once the submit button is clicked, all of the information will be saved into the database(sql server) using stored procedure.
Another question will be how to do validation. let say enter non numeric value into zip code. or enter null to any of above input boxes.
Thank you
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