MVC Ajax Extensions


This documents the use of the System.Web.Mvc.Ajax library.

Citing MSDN docs "Each extension method renders an HTML element. The ActionLink method renders an anchor (a) element that links to an action method. The RouteLink method renders an anchor (a) element that links to a URL, which can resolve to an action method, a file, a folder, or some other resource. This class also contains BeginForm and BeginRouteForm methods that help you create HTML forms that are supported by AJAX functions.


AJAX OptionsDescription
ConfirmGets or sets the message to display in a confirmation window before a request is submitted.
HttpMethodGets or sets the HTTP request method ("Get" or "Post").
InsertionModeGets or sets the mode that specifies how to insert the response into the target DOM element.
LoadingElementDurationGets or sets a value, in milliseconds, that controls the duration of the animation when showing or hiding the loading element.
LoadingElementIdGets or sets the id attribute of an HTML element that is displayed while the Ajax function is loading.
OnBeginGets or sets the name of the JavaScript function to call immediately before the page is updated.
OnCompleteGets or sets the JavaScript function to call when response data has been instantiated but before the page is updated.
OnFailureGets or sets the JavaScript function to call if the page update fails.
OnSuccessGets or sets the JavaScript function to call after the page is successfully updated.
UpdateTargetIdGets or sets the ID of the DOM element to update by using the response from the server.
UrlGets or sets the URL to make the request to.


The package Jquery.Unobtrusive-Ajax is required in the project. The corresponding javascript files must be included in a bundle (jquery.unobtrusive-ajax.js or jquery.unobtrusive-ajax.min.js). Finally, it must be activated as well in the web.config file:

    <add key="UnobtrusiveJavaScriptEnabled" value="true" />

The Actions invoked (SomeAction in the examples) must either return a Json or a PartialView.