A partial view is a small view that can be reused on different views. It can also be used to break down a large view into smaller, more maintainable partial views. In the shared layout file, we have a navigation bar element that can be extracted into a partial view to improve maintainability.
To create a partial view, right-click on the shared folder in Solution Explorer, select 'Add View' and check the 'Create as a partial view' checkbox. In the layout file, we use the 'Html.Partial' method to render the partial view. We can optionally pass a model to the partial view as the second argument.
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