Cout affidavit of marriage is not a valid document of marriage.
You have to come in person and sign the forms to apply and get marriage certificate for which both of your presence is required.
However due to an order passed by Delhi High Court registration of marriage is possible by video conferencing but that is an exception than a rule.
If you could show proof of residence in Bangalore you can apply for Marriage Certificate from there also. Meet a local Marriage registrar soon.