If the charges were dismissed by the DA then there should be no problem - although you will need to submit a certified copy of the court record at the time of the interview.
Certified Immigration Law Specialist*
Law Offices of Tasoff and Tasoff
16255 Ventura Blvd. Suite 1000
Encino, California 91436
Only you can decide whether to go ahead with marriage.
If the case was dismissed, then there is no conviction.
You should retain an experienced immigration lawyer, whether myself or one of my colleagues, to review all the facts, advise you, and handle the case.
J Charles Ferrari Eng & Nishimura 213.622.2255 The statement above is general in nature and does not constitute legal advice, as not all the facts are known. You should retain an attorney to review all the facts specific to your case in order to receive advise specific to your case. The statement above does not create an attorney/client relationship. Answers on Avvo can only be general ones, as specific answers would require knowledge of all the facts. As such, they may or may not apply to the question.