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Blazor makes it incredibly easy to tailor the UI experience based on the user's specific permissions and roles.
Use <AuthorizeView Roles="Admin"> to wrap content that only administrators should see. You can also use <NotAuthorized> to show a login prompt to anonymous users. It's declarative, clean, and runs fast.
Roles are often too simple. Use **Policies** for complex rules like 'Must be over 18 AND a Premier member'. <AuthorizeView Policy="VipAccess">. You define these policies in your Program.cs, and they can be reused across the UI and the API controllers.
Q: "Does hiding a button make the app secure?"
Architect Answer: "NO! Hiding a button is just a UX feature. An attacker can still manually call your API endpoint. **Always** enforce the SAME role and policy checks on your backend controllers using the [Authorize(Policy = "...")] attribute. Frontend security is for the user; Backend security is for the business."
Quizzes linked to this course—pass to earn certificates.
On this page
1. AuthorizeView 2. Policy-Based Visibility 3. Architect Insight