Скачать или смотреть How to Obtain the Action URL in ASP.NET MVC Without the Link Tag

Learn how to extract the Action URL in ASP.NET MVC without generating a link, using the UrlHelper class for simple and efficient URL management.
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This video is based on the question https://stackoverflow.com/q/152137/ asked by the user 'Tigraine' ( https://stackoverflow.com/u/21699/ ) and on the answer https://stackoverflow.com/a/152898/ provided by the user 'Dave Weaver' ( https://stackoverflow.com/u/11991/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Understanding Action URLs in ASP.NET MVC

When working with ASP.NET MVC, generating links to various actions is a common task. However, there may be instances when you only need the URL of an action and not the associated HTML link tag (<a> element). This is particularly useful in scenarios where you might want to use the URL in JavaScript or other non-HTML contexts. If you find yourself wondering, “How do I get just the Action URL without generating a link?” you're in the right place!

The Problem

It's common practice to use Html.ActionLink(...) to generate links in ASP.NET MVC applications. However, when you do this, you inadvertently receive a link that returns an anchor tag. If you require only the URL in its string format, this approach doesn’t serve your needs. The question at hand is: Is there a way to retrieve just the URL of the Action without getting an anchor tag?

The Solution: Using UrlHelper Class

Fortunately, ASP.NET MVC provides a straightforward solution to this problem by utilizing the UrlHelper class. This class contains methods that allow you to generate URLs without creating HTML links. Here’s how you can do it:

Syntax of Url.Action

The Url.Action method can be called in several ways depending on your needs:

To generate a URL just based on the action name:

[[See Video to Reveal this Text or Code Snippet]]

To generate a URL using both the action name and route values (parameters):

[[See Video to Reveal this Text or Code Snippet]]

To specify the controller along with the action name and route values:

[[See Video to Reveal this Text or Code Snippet]]

Breaking It Down

Basic Action Name: Using only the action name is the simplest form when you don’t need additional parameters or a specific controller. This would yield a URL pointing to the indicated action.

Action Name with Parameters: If your action requires parameters (e.g., query strings), you can pass them using an anonymous object as htmlValues. This helps in constructing a URL that includes the necessary query parameters.

Controller Name Specification: When you have multiple controllers with actions of the same name, specifying the controller name ensures that the generated URL points to the correct action.

Example Use Cases

JavaScript Calls: If you need to redirect or make API calls using JavaScript, you can generate the URL with Url.Action and store it in a JavaScript variable.

Redirects: If you are performing server-side operations where you need a URL to redirect the user after logic execution, using Url.Action is ideal.

Conclusion

Using the UrlHelper class to obtain Action URLs in ASP.NET MVC allows you to keep your code clean and efficient, focusing on just the URL string that you need, without extra HTML elements cluttering your output. Next time you find yourself needing that URL without a link tag, remember the methods available within Url.Action. Simplifying your web application development has never been easier!

By mastering these techniques, you're well on your way to having complete control over URL generation in your ASP.NET MVC applications.