Microsoft
70-519 · Question #176
70-519 Question #176: Real Exam Question with Answer & Explanation
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Question
You are designing an ASP.NET MVC 2 Web application that requires each user to register a user name and password before accessing restricted content. You have the following requirements for user registration: - When the focus leaves the user name input field, validate that the user name does not already exist. - Display validation results before submitting the form. You need to recommend a data validation strategy. What should you recommend?
Options
- AUse the Required attribute to annotate the user name property of the model.
- BUse an UpdatePanel control to access server-side validation.
- CImplement the IValidator interface on the model.
- DUse jQuery to access server-side validation code.
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