You need to check whether a specified login name belongs to a valid user of the Web site, and if the login name does not already exist, you need to add it to the Web site. Which of the following methods would you use to perform these actions?
Question:You need to check whether a specified login name belongs to a valid user of the Web site, and if the login name does not already exist, you need to add it to the Web site. Which of the following methods would you use to perform these actions?
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