How to extend Canada visitor visa with an expired H1B visa?

[Vinothkumar Rajendran]

How to extend Canada visitor visa with an expired H1B visa?. I have valid I-797 Approval notice. What is the procedure to extend the Canada visitor visa? what are all the documents required? Currently, I am in the USA.

[yatinkumar]

No matter via which document you entered Canada whether a visitor visa, an electronic travel authorization or any another document. If you wish to extend your stay as a visitor, you must get a Canadian visitor record.
You can apply online for a visitor record to get your application processed faster.