asked on

asp.net call back event is not working in IE 11

I have IE 11 and I am trying to run this code
but It is not calling the server method and getting its result.

I run it in Compatibility mode and it worked, it also worked in chrome and firefox.

Not sure why it is not working in IE 11.

HERE IS MY CODE

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="ICALLBACK.WebForm1" %>

<!DOCTYPE html>

<html >
<head runat="server">
    <title></title>
      <script type="text/ecmascript">
          function LookUpStock() {
              var lb = document.getElementById("ListBox1");
              var product = lb.options[lb.selectedIndex].text;
              alert('1');
              CallServer(product, "");
          }

          function ReceiveServerData(rValue) {             
              document.getElementById("ResultsSpan").innerHTML = rValue;

          }
  </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
      <asp:ListBox ID="ListBox1" Runat="server"></asp:ListBox>
      <br />
      <br />
      <button type="Button" onclick="LookUpStock()">Look Up Stock</button>
      <br />
      <br />
      Items in stock: <span id="ResultsSpan" runat="server"></span>
      <br />
    </div>
    </form>
</body>
</html>

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CS. FILE CODE

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace ICALLBACK
{
    public partial class WebForm1 : System.Web.UI.Page, System.Web.UI.ICallbackEventHandler
    {
        protected System.Collections.Specialized.ListDictionary catalog;
        protected String returnValue;

        protected void Page_Load(object sender, EventArgs e)
        {
            String cbReference =
            Page.ClientScript.GetCallbackEventReference(this,
            "arg", "ReceiveServerData", "context");
            String callbackScript;
            callbackScript = "function CallServer(arg, context)" +
                "{ " + cbReference + ";}";
            Page.ClientScript.RegisterClientScriptBlock(this.GetType(),
                "CallServer", callbackScript, true);

            catalog = new System.Collections.Specialized.ListDictionary();
            catalog.Add("monitor", 12);
            catalog.Add("laptop", 10);
            catalog.Add("keyboard", 23);
            catalog.Add("mouse", 17);

            ListBox1.DataSource = catalog;
            ListBox1.DataTextField = "key";
            ListBox1.DataBind();
        }

        public string GetCallbackResult()
        {
            return returnValue;
        }

        public void RaiseCallbackEvent(string eventArgument)
        {
            if (catalog[eventArgument] == null)
            {
                returnValue = "-1";
            }
            else
            {
                returnValue = catalog[eventArgument].ToString();
            }
        }
    }
}

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ASKER CERTIFIED SOLUTION

Stephan

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