He did the marriage contract with a girl but did not tell his parents, and he wants to do the marriage contract again in their presence

No File Exists
Check below answers in case you are looking for other related questions:
If a man says to his fiancée, “Give yourself to me in marriage,” this is not regarded as a marriage
Can the marriage contract of a zaaniyah be annulled?

No File Exists
Related Answers:
The meaning of “Bad statements are for bad people (or bad women for bad men) and bad people for bad statements (or bad men for bad women)”; and is it possible to find a wife who is righteous both outwardly and inwardly?
A wife refusing her husband a co-wife
A realistic look at marriage to women of the People of the Book
If a man says to his fiancée, “Give yourself to me in marriage,” this is not regarded as a marriage
Can the marriage contract of a zaaniyah be annulled?

Recommended answers for you:
Ruling on the crime of rape
Number of sons and daughters of the Prophet (peace and blessings of Allaah be upon him)
Protection From the Jinn
Ruling concerning women covering their feet in prayer
Ruling on pointing one’s feet towards the qiblah