ASP.NET MVC Custom Route Constraint For AJAX Requests

Question

How can I create a custom route constraint that will only match AJAX requests?

In a controller I can use Request.IsAjaxRequest().

How can I access IsAjaxRequest from my custom constraint? I've implemented the IRouteConstraint interface and the Match() method as follows:

public class IsAjaxConstraint : IRouteConstraint
{
    public bool Match(HttpContextBase httpContext,
                      Route route, 
                      string parameterName,
                      RouteValueDictionary values,
                      RouteDirection routeDirection)
    {            
     // How can I check for an Ajax request here?
    }
}

hawkke · Accepted Answer · 2012-01-29 02:13:09Z

5

If you add this to your route constraint, does the httpContext.Request.IsAjaxRequest() work?

using System.Web.Mvc;

Request.IsAjaxRequest() is an extension method in System.Web.Mvc.

answered Jan 29, 2012 at 2:13

hawkke

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1 Comment

Mark Over a year ago

Thank you. Knew I was overlooking something simple.

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