auto complete in mvc in searchbox

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MVC

in below code it is working for names but while im entering character searchbox fill with mulitple names and when i select that name and while i click submit button tahrt valuses taking other id values

@model AppModels.Models.DocDto

@{
    ViewBag.Title = "AutoCompleteCountry";
    Layout = "~/Views/Shared/_Layout.cshtml";
}


<div class="form-horizontal" id="formulario">
    <div class='control-group'>
        <label class="control-label" style="font-size: 18px; width: 250px;">Search doctor by name</label>
        <div class='controls' style="margin-left: 280px;">
        <input class="input-xlarge" type="text" id="FName"  name="somevalue" data-autocomplete-url="@Url.Action("AutoCompleteCountry/Home")"/>

            <input type="submit" id="CustomersList" value="Submit"/>
        </div>
    </div>
</div>





<script src="~/Scripts/jquery-1.8.2.min.js"></script>
<script src="~/Scripts/jquery-ui-1.9.2.min.js"></script>
@Styles.Render("~/Content/themes/base/css")


<script type="text/jscript">
    var b;
    alert(b)
    $('#CustomersList').click(function () {

            alert(b)
         var fname = b;
         var url = '@Url.Action("DoctorList")/' + fname;

         $.get("@Url.Action("DoctorList")/" + fname, function (a) {

             $('#div1').html(a);

            });

});</script>




<script type="text/javascript">
    $(document).ready(function () {
        $("#FName").autocomplete({
            source: function(request,response) {
                $.ajax({

                    url:"@Url.Action("AutoCompleteCountry")",
                    type: "POST",
                    dataType: "json",
                    data: { term: request.term },
                    success: function (data) {
                        response($.map(data, function (item)


                        {
                            b = item.DID;


                            alert(b)

                         return {
                                label: item.FName +
                                         item.LName + " "
                                         + item.Photo + item.Address
                                , value: item.FName
                                , id: item.FName,


                                    //id:item.DID


                          };



                        }))

                    }
                })
            },
            messages: {
                noResults: "", results: ""
            }
        });
    })
</script>

<div id="div1" style="height:auto;margin-left:100px;margin-top:10px;width:auto;">






</div>