How to Properly Add the 'Active' Class to `Html.ActionLink` in ASP.NET MVC for Bootstrap Navigation?

Adding the "Active" Class to Html.ActionLink in ASP.NET MVC

In this inquiry, we aim to resolve the challenge of incorporating an "active" class into the bootstrap navbar using ASP.NET MVC. The problem arises when the conventional approach, as presented in the provided code snippet, fails to display the intended styling.

Alternative Solution

In Bootstrap, the "active" class should be applied to the

element, not the . Referencing the Bootstrap documentation, we find that using tags is discouraged in the navbar.

To rectify this, we can modify the code as follows:

This approach aligns with Bootstrap's design and ensures the proper application of the "active" class.

Automatic Class Application

To simplify the process, you can leverage ViewContext.RouteData to automatically apply the "active" class based on the current page. An enhanced version of your initial code would look like this:

By utilizing this technique, you can centralize your menu in a partial view and automate the "active" class assignment.

Extension Method for More Elegance

For a cleaner solution, you can introduce an HtmlHelper extension:

public static string IsSelected(this HtmlHelper html, string controllers = "", string actions = "", string cssClass = "selected")
{
    // Logic to extract relevant information from the current request
    // Compares the extracted information with the provided parameters

    return result ? cssClass : "";
}

This extension allows for concise and reusable code in your views:

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