How to Retrieve the Current User in ASP.NET MVC Controllers?

Accessing the Current User in ASP.NET MVC

Problem:

In classic ASP.NET Web Forms, Page.CurrentUser readily provided the currently authenticated user. How do we achieve this same functionality within an ASP.NET MVC controller?

Solution:

ASP.NET MVC controllers offer a convenient User property, directly representing the authenticated user. This property is readily accessible within controller methods, allowing retrieval of user details like identity, roles, and claims.

Implementation:

Accessing the User property is straightforward:

<code class="language-csharp">public ActionResult Index()
{
    var currentUser = this.User; // Access the User property

    // Access user information here
    // Example:  string userName = currentUser.Identity.Name;
}</code>

Important Considerations:

• The User property conforms to System.Security.Principal.IPrincipal, offering methods for identity verification and authorization.
• A null User property indicates the absence of an authenticated user.
• View access to user information mirrors this approach, utilizing the User property of the ViewPage.

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