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Explain ViewComponents and how they differ from Partial Views.

Mid .NET Core
Quick Answer ViewComponents have their own controller logic (InvokeAsync()) that can inject services, run async database queries, and return a view. Partial Views are simple, stateless — they just render their template with a model passed in. ViewComponents are reusable, independently testable UI widgets; Partial Views are simple HTML fragments.

Answer

View Components combine rendering logic and a view into a reusable UI block, with full support for DI and testability.

Partial Views are simple reusable view fragments with no independent logic; they rely on the parent view's model.

View Components are ideal when the UI fragment needs its own data retrieval and business logic.

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