HttpContext.Current.Request.IsAjaxRequest() error in MVC 4

Question

I am using

HttpContext.Current.Request.IsAjaxRequest()

condition to check for an ajax request in global.asax in Application_Error method but I get the below error:

'System.Web.HttpRequest' does not contain a definition for 'IsAjaxRequest' and the best extension method overload 'System.Web.Mvc.AjaxRequestExtensions.IsAjaxRequest(System.Web.HttpRequestBase)' has some invalid arguments

Below is the code:

void Application_Error(object sender, EventArgs e)
    {

        Exception exception = Server.GetLastError().GetBaseException();
        HttpException httpException = exception as HttpException;

        string ErrorMessage = "";
        ErrorMessage = "Application Level Error";


        logger.Error(ErrorMessage, exception);

        if (System.Web.HttpContext.Current.Request.IsAjaxRequest()) //if its an ajax do not redirect
        {
            return;
        }
    else
    {
      Server.ClearError();
      this.Response.RedirectToRoute("Default", new { controller = "Home", action = "Error" });
    }
  }

Try new HttpRequestWrapper(System.Web.HttpContext.Current.Request).IsAjaxRequest() IsAjaxRequest() takes an HttpRequestBase which is different from an HttpRequest (and not related, so it's a bit confusing). I think the wrapper will fix your problem. — Pete
– Pete, Commented Jan 31, 2013 at 15:46

Pete · Accepted Answer · 2013-01-31 18:30:36Z

29

Guess it worked... Posting as the answer.

Try

new HttpRequestWrapper(System.Web.HttpContext.Current.Request).IsAjaxRequest()

IsAjaxRequest() takes an HttpRequestBase which is different from an HttpRequest (and not related, so it's a bit confusing). I think the wrapper will fix your problem.

answered Jan 31, 2013 at 18:30

Pete

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1 Comment

Colin Over a year ago

Note that HttpRequestWrapper is in the System.Web namespace but IsAjaxRequest() is an extension method contained in the System.Web.Mvc assembly, so you will need to include both in your namespace references

Bart · Accepted Answer · 2013-06-12 15:59:36Z

1

In my case, I resorted to using a static method (I was in an IRouteConstraint Implementation)

bool isAjax = AjaxRequestExtensions.IsAjaxRequest(httpContext.Request);

For this to work, don't forget to include System.Web.Mvc if you don't have it already.

answered Jun 12, 2013 at 15:59

Bart

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