If you change your marriage status, you have to inform the Canadian immigration office and get a new immigration paper. I have a friend married in China after obtaining the landing paper before landing, however, he was refused to enter Vancouver when he came to Canada. , Q% w4 H; r) |0 E$ ]
Information on internet is people's experience, not necessary true. You better contact the official office before you change anything.
$ @" k* Y& S4 U+ S! q( v B! jGood luck |