How to check if request is ajax or not in codebehind - ASP.NET Webforms

Question

I tried the Request.IsAjaxRequest but this does not exist in WebForms. I am making a JQuery ajax call. How do I check if this is a ajax request or not in C#?

Answer 1

I created an extension that I use:

internal static bool IsAjaxRequest(this HttpRequestMessage request)
{
    return request != null && request.Headers.Any(h => h.Key.Equals("X-Requested-With", StringComparison.CurrentCultureIgnoreCase) &&
        h.Value.Any(v => v.Equals("XMLHttpRequest", StringComparison.CurrentCultureIgnoreCase)));
}