从数据库生成谷歌地图标记

你好，我正在尝试填充谷歌地图V3与多个标记从SQL Server数据库表

我将纬度经度保存在一个名为Location的列中，格式为38.425424，-5.477177

我的问题是标记没有出现在地图上

script type="text/javascript">
     var markers = [
    <asp:Repeater ID="rptMarkers" runat="server">
    <ItemTemplate>
                {
                    "title": '<%# Eval("Cust_Name") %>',
                    "Location": '<%# Eval("Location") %>',
                "description": '<%# Eval("description") %>'
            }
</ItemTemplate>
<SeparatorTemplate>
    ,
</SeparatorTemplate>
</asp:Repeater>
 ];
</script>
<script type="text/javascript">
    window.onload = function () {
        var mapOptions = {
            center: new google.maps.LatLng(markers[0].Location),
            zoom: 8,
            mapTypeId: google.maps.MapTypeId.ROADMAP
        };
        var infoWindow = new google.maps.InfoWindow();
        var map = new google.maps.Map(document.getElementById("dvMap"), mapOptions);
        for (i = 0; i < markers.length; i++) {
            var data = markers[i]
            var myLatlng = new google.maps.LatLng(data.Location);
            var marker = new google.maps.Marker({
                position: myLatlng,
                map: map,
                title: data.title
            });
            (function (marker, data) {
                google.maps.event.addListener(marker, "click", function (e) {
                    infoWindow.setContent(data.description);
                    infoWindow.open(map, marker);
                });
            })(marker, data);
        }
    }
</script>

<div class="panel-body" id="dvMap" style="height:280px;" >                                                            
                                    
</div>

protected void Page_Load(object sender, EventArgs e)
    {
                if (!this.IsPostBack)
        {
            DataTable dt = this.GetData("select * from Customer");
            rptMarkers.DataSource = dt;
            rptMarkers.DataBind();
        }
    }
    private DataTable GetData(string query)
    {
        string conString = ConfigurationManager.ConnectionStrings["connection"].ConnectionString;
        SqlCommand cmd = new SqlCommand(query);
        using (SqlConnection con = new SqlConnection(conString))
        {
            using (SqlDataAdapter sda = new SqlDataAdapter())
            {
                cmd.Connection = con;
                sda.SelectCommand = cmd;
                using (DataTable dt = new DataTable())
                {
                    sda.Fill(dt);
                    return dt;
                }
            }
        }
    }