Jquery AJAX with ASP.NET WebMethod Returning Entire Page

Question

I\'m doing some simple tests (in preparation for a larger project) to call an ASP.NET WebMethod using JQuery AJAX. In my example, my WebMethod returns a simple string. Howev

Answer 1

I think I was getting confused with the "type" parameter in JQuery's $.post command. After talking to some folks, it seems that the return type for calling a WebMethod MUST be "json". I was trying to use "html". Once I changed it to "json" and then everything worked like normal. So apparently, a method decorated with [WebMethod] returns JSON only, and that's where my hangup was.

Thanks for your replies guys.

Answer 2

Check out this link. I used some of his other posts to calll WCF service with success. Be sure to check out the related articles:

http://encosia.com/2008/05/29/using-jquery-to-directly-call-aspnet-ajax-page-methods/

Read through the article but its essentially:

  $("#Result").click(function() {
    $.ajax({
      type: "POST",
      url: "Default.aspx/GetDate",
      data: "{}",
      contentType: "application/json; charset=utf-8",
      dataType: "json",
      success: function(msg) {
        $("#Result").text(msg.d);
      }
    });
});

Answer 3

Try changing the last parameter "html" to "text". This parameter specifies the type of data to be returned.

Answer 4

I had the exactly the same problem: WebMethod returned the entire HTML page instead the intended data. For me, the solution came from changing inside ~/App_Start/RouteConfig.cs the following line:

settings.AutoRedirectMode = RedirectMode.Permanent;

to

settings.AutoRedirectMode = RedirectMode.Off;