I am not an immigration expert, and the rules and regulations regarding visas and work permits can vary based on individual circumstances and the country's immigration laws. However, I can provide some general information.
If you visit Canada on a visit visa (temporary resident visa) and get married to your girlfriend, it does not automatically grant you a work permit. Marriage to a Canadian citizen or a permanent resident does not, by itself, provide work authorization.
To work in Canada, you would typically need a work permit. There are several types of work permits available, and eligibility depends on factors such as your occupation, the job offer you receive from a Canadian employer, and whether the employer has obtained a positive Labour Market Impact Assessment (LMIA) for the position.
If you plan to live and work in Canada permanently, you may need to apply for permanent residency through a different immigration pathway, such as the Family Class Sponsorship program or the Express Entry system.
It's crucial to consult the official website of Immigration, Refugees, and Citizenship Canada (IRCC) or speak with a qualified immigration professional to get accurate and up-to-date information on the specific requirements and procedures for obtaining a work permit and permanent residency in Canada. Immigration laws can change, and the application process can be complex, so seeking professional advice will ensure you have the most accurate information and guidance.