RSS feed
TwitterDetecting Ajax requests on the server
If you use jQuery or ASP.NET AJAX you can easily detect Ajax requests on the server by simply checking for the HTTP_X_REQUESTED_WITH HTTP Header. Both libraries automatically add this to the HTTP Header when they send a request.
Here’s a little code snippet that returns true for Ajax requests.
public static bool IsAjaxRequest() { return HttpContext.Current.Request.Headers["X-Requested-With"] != null && HttpContext.Current.Request.Headers["X-Requested-With"] == "XMLHttpRequest"; }
The cool thing about this is that you can use this in a base page or a HTTP Module, and customize the returned data. You could for instance return JSON or XML.
using System; using System.Web.UI; namespace MyWebApplication { public class BasePage : Page { protected override void OnInit(EventArgs e) { base.OnInit(e); if (Helper.IsAjaxRequest()) { Response.Headers.Clear(); Response.ContentType = "application/json"; Response.Write(json output); Response.End(); } } } }
Related Posts:
- Creating a contact form with ASP.NET MVC
- Getting the Page and EPiServer CurrentPage object from HttpContext
- ASP.NET Validation and jQuery
- Creating a Custom EPiServer Paging Control
- Part 8: Preparing for launch – Create an EPiServer site from scratch
