Work Issues

$(document).ready(function () {
    var select = $("#<%=lblMultiSelect.ClientID%>");
    var senddata = select.val();
    var txt = $("#<%=listBoxValue.ClientID%>"); //<<just putting id to a textbox here for testing purposes

    select.change(function (e) {
        $.ajax({
            type: "POST",
            url: "CS.aspx/GetCurrentTime",
            data: '{name: "' + senddata + '" }',
            contentType: "application/json; charset=utf-8",
            dataType: "json",
            success: OnSuccess,
            failure: function(response) {
                alert(response.d);
            }
        });
    });
});

function OnSuccess(response) {
    $.each(response, function (i, el) {

        // your code for listbox

    });
}

1. You're in the wrong forum. Post your question in the Web Development forum[^].
2. You're going to need to provide significantly more information that that if you expect anyone to be able to help you.
   
   • Create a minimal reproduction of the problem in JSFiddle[^] and post the link to it.
   • Tell us what version of Chrome you're using.
   • Include the full details of any errors.
   • Tell us what you've done to try to solve the problem.