Ext 调用 ashx 无反应

在 Ext 2.0 中使用对象的 Load 方法请求 *.ashx 文件, 只有第一次有返回值, 以后的请求无反应(没有收到回应), 但是请求 *.aspx 时却是正常的.

Ext :

============================================================

Ext.onReady(function() {

    // Note: For the purposes of following along with the tutorial, all

    // new code should be placed inside this method. Delete the following

    // line after you have verified that Ext is installed correctly.

   Ext.get("myButton").on("click",function(){

       varmyDiv = Ext.get("myDiv");

       myDiv.load({

           url:'Ajax/Default.aspx',

           params:'name='+ Ext.get("name").dom.value,

           text:'Updating...'

       });

       myDiv.show();

   });

});

=============================================================

请求 *.aspx

请求 *.ashx