Question

I know that it is possible to send an AJAX request to an .asmx page. And I also know that an .asmx page handles an AJAX request via a web method.

Is it also possible to send an AJAX request to an .aspx page? If so, does an .aspx page also handle an AJAX request via a web method? Note that I would like to return a JSON response from the .aspx page. Is this possible?

Answer 1

You can define web methods in the code-behind of your .aspx page and then call them:

[WebMethod]
public static string doSomething(int id)
{
    ...
    return "hello";
}

And then, to call a web method in your jQuery code:

$.ajax({
    type: "POST",
    url: "YourPage.aspx/doSomething",
    data: "{'id':'1'}",
    dataType: "json",
    contentType: "application/json; charset=utf-8",
    success: function (data) {
        var returnedstring = data.d;
        var jsondata = $.parseJSON(data.d);//if you want your data in json
    }
});

Here is a good link to get started.