Calling an ASP.NET server side method via jQuery

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To call ASP.NET AJAX “ScriptServices” and page methods, you need to use the full $.ajax() syntax:

$.ajax({
  type: "POST",
  url: "MessagePopup.aspx/SendMessage",
  data: "{subject:'" + subject + "',message:'" + message + ",messageId:'" + messageId + "',pupilId:'" + pupilId +"'}",
  contentType: "application/json; charset=utf-8",
  dataType: "json",
  success: function(msg) {
    // Do something interesting here.
  }
});

See this post for details on why that’s necessary: http://encosia.com/2008/05/29/using-jquery-to-directly-call-aspnet-ajax-page-methods/

Edit: The extension doesn’t change to .asmx but remains .aspx.

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