How to use session in asp net core mvc
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asp.net core mvc session: a comprehensive guide
session state in asp.net core mvc provides a way to store user-specific data across multiple requests. this is incredibly useful for scenarios like:
*shopping carts:* remembering items a user adds as they browse.
*user profiles:* storing user information after login to avoid repeated database queries.
*wizard workflows:* persisting state as the user progresses through multi-step forms.
*preferences:* storing user-selected themes, languages, or other display settings.
this tutorial will cover everything you need to know to effectively use session state in your asp.net core mvc applications, including configuration, setting and retrieving data, expiration, and best practices.
*1. setting up your project*
first, create a new asp.net core mvc project in visual studio (or using the .net cli). make sure you select the "model-view-controller" template.
*2. enabling session state*
session state is not enabled by default in asp.net core. you'll need to add the necessary services and middleware to your `program.cs` file (or `startup.cs` for older projects).
*explanation:*
*`builder.services.addsession(...)` (or `services.addsession(...)`):* registers the session services with the dependency injection container.
*`idletimeout`:* specifies how long a session can be idle before its contents are abandoned. here, it's set to 30 minutes.
*`cookie.httponly`:* sets the `httponly` flag on the session cookie. this is a security measure that prevents client-side javascript from accessing the cookie, protecting it from cross-site scripting (xss) attacks.
*`cookie.isessential`:* specifies if the cookie is required for the app to function. setting this to `true` bypasses the gdpr consent check if you're in a region that requires it. use cautiously, as you should generally avoid essential cookies if they're not truly essential. consider alternatives like local storage if ...
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