Why (how) your marriage can affect getting visa opportunity?
Whether its Work visa or student visa, visas are issued to married & unmarried person.
Only question I can think is about funds. For example, for PR funds are required as per no. of persons migrating to Canada.
But I don't think such condition is for Work/Student visa.
Hope you can make up your mind if you want to get married or later.
Not only fund will matter, she/he have to arrange another applicants PCC's everything whatever neccessory documents for PR. it take time but she can marry if they get it within some short time of period , whats your status of application , means PR applied or not? please share your info.then you will get exact idea. after some stage of PR it is not advisible to marry becasue it will delay your PR process, if its good for you to delay then marry with your partnet is ok, but you need funds , marriage certificate, PCC, medical's etc done even you have to inform CHC about your marriage.