Hi dear kumar if you parents not agree with your marriage design thna you need to file application in register for marriage and submitt your age certificate like your 10 marksheet or yout birth certificate and other some document
they sent notice for your parents and paste on notice board and its 30 day time to after give you application and if their no obejction from any one than you marry in next 30 day
you need to present in office of register he give you certificate you need to show your marriage photo and you go with two witnees they have nay of them your friend or else
not your parents is mandatory
if you seek help of lawyer than you need to contact in local court and you may find some good lawyer their
thanks