What is the ruling on a wife going to her father's house if she swore not to go to the market without her husband's knowledge, and then she went?

The questioner did not clarify two points in his question: Was the oath sworn by Allah's names and attributes, or by divorce? And was going to her father's house a divorce or a threat?

If the wife went to the market without her husband's knowledge, and the oath was by divorce, then she is divorced according to the majority of scholars. However, if the oath was by one of Allah's names or attributes, then an expiation for an oath is due on him. If the intent of going to her father's house was divorce, then she is divorced simply by going to the market without permission. If the divorce occurred, he can take her back before her iddah (waiting period) ends, unless this divorce completes the three divorces. If her iddah ends and he has not taken her back, she is not permissible for him except with a new contract. If the divorce completes the three, then she is not permissible for him until she marries another husband.