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Ext.Ajax.request里面success,老爆ext-all.js的错误!

 function validatorData() {
            var UserName = Ext.getCmp("UserName").getValue();
            var Password = Ext.getCmp("Password").getValue();
            if (Ext.util.Format.trim(UserName) == "" || Ext.util.Format.trim(Password) == "") {
                Ext.Msg.alert("警告", "请正确输入数据,用户名和密码都不能够为空!");
                return;
            }
            Ext.Ajax.request
           ({
              
               url: "Index.aspx", //请求的地址  
               params: { ParamValue: "1", ParamUserName: UserName, ParamPassword: Password }, //发送的参数  
               
               success: function (response,option) {
                   debugger
                   var obj = Ext.util.JSON.decode(response.responseText); //返回的信息  
                  
                   if (obj.success == true) {
                 Ext.Msg.alert("好消息", "好消息:你登陆成功了!");
                 //清除输入框  
                 Ext.getCmp("UserName").setValue("");
                 Ext.getCmp("Password").setValue("");
                 loginWindow.hide();
             }
             else {
                 Ext.Msg.alert("坏消息", "坏消息:你登陆失败了!");
             }
         },
         failure: function () {
             Ext.Msg.alert("坏消息", "坏消息:你登陆出现异常了!");
         }
     });
        }

//这里是后台代码
   string ParamValue = Request["ParamValue"];
            if (ParamValue == "1")
            {
                string UserName = Request["ParamUserName"];
                string Password = Request["ParamPassword"];
                MODEL.ext.user u = new MODEL.ext.user();
                               u = BLL.ext.GetUser();

                               if (u.UserName.Trim() == UserName && u.PassWord.Trim() == Password) 
                               {
                                   Response.Write("{success:true}");
                               }


                               else
                               {
                                   Response.Write("{success:false}");
                               }
        }

Ext.Ajax.reques
补充:.NET技术 ,  C#
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