Question 135877 in Visual Studio Code Question posted in
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Visual Studio Code – C'# Checking if an Ajax call c# side

I have some code below so that when a user calls a method in an mvc controller it does some checks to see if it is an Ajax call or not. If Ajax it returns a json response else it returns a url string (Security page). When I run in visual studio the code works perfectly so it recognises the call is an ajax call but on a production server variable "isAjax" is set to false. Is there any reason why it would work locally in visual (local iis) but not on a server?

var isAjax = (filterContext.RequestContext.HttpContext.Request["X-Requested-With"] == "XMLHttpRequest") ||
                             ((filterContext.RequestContext.HttpContext.Request.Headers != null) &&
                             (filterContext.RequestContext.HttpContext.Request.Headers["X-Requested-With"] == "XMLHttpRequest"));

On the network tab in the browser it shows that it is being passed (image below)

Network tab

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2

Answers


  1. 0 
    public ActionResult GetData()
{
  if(Request.IsAjaxRequest())
        return RedirectToAction("AjaxRequest");
  else
        return RedirectToAction("NonAjaxRequest");
}

    Instead of checking the headers you can check the current request at controller level.

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  2. 0

    AJAX calls will have a header named X-Requested-With, and the value will be XMLHttpRequest. So you can check like this:

    bool isAjaxRequest = request.Headers["X-Requested-With"] == "XMLHttpRequest";

    Otherwise you can use the System.Web.MVC reference and use the function.

    bool isAjaxRequest = Request.IsAjaxRequest();
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