add multple locations in google map using asp.net c#.net/ vb.net

here shows multiple locations adding in google map using java script / jquery in Asp.net, c#.net, vb.net

<script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?sensor=false"></script>
    <script type="text/javascript">
    var markers = [
    <asp:Repeater ID="rptMarkers" runat="server">
    <ItemTemplate>
             {
                "title": '<%# Eval("title") %>',
                "lat": '<%# Eval("lat") %>',
                "lng": '<%# Eval("lng") %>',
                "description": '<b><%# Eval("title") %></b> <br><%# Eval("address") %>'
            }
    </ItemTemplate>
    <SeparatorTemplate>
        ,
    </SeparatorTemplate>
    </asp:Repeater>
    ];
    </script>

 <script type="text/javascript">

        window.onload = function () {
            Dataload();
        }
        function Dataload() {
            var mapOptions = {
                center: new google.maps.LatLng(markers[0].lat, markers[0].lng),
                zoom: 13,
                disableDefaultUI: true,
                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.lat, data.lng);
                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>

C#.NET:

protected void page_load(object sender, EventArgs e)
{
 if (!IsPostBack) {
  DataColumn dValue = new DataColumn();
  DataColumn dlat = new DataColumn();
  DataColumn dlng = new DataColumn();
  DataColumn dadd = new DataColumn();

  dValue.ColumnName = "title";
  dValue.DataType = Type.GetType("System.String");
  dlat.ColumnName = "lat";
  dlat.DataType = Type.GetType("System.String");
  dlng.ColumnName = "lng";
  dlng.DataType = Type.GetType("System.String");
  dadd.ColumnName = "address";
  dadd.DataType = Type.GetType("System.String");


  // Add these DataColumns into the DataTable
  dtSearchResults.Columns.Add(dadd);
  dtSearchResults.Columns.Add(dValue);

  dtSearchResults.Columns.Add(dlat);
  dtSearchResults.Columns.Add(dlng);

  DataRow dr = dtSearchResults.NewRow();

  dr["title"] = "k R puram";

  dr["lat"] = "13.0126101";
  dr["lng"] = "77.7165925";
  dr["address"] = "33/1, k r puram";
  dtSearchResults.Rows.Add(dr);

  DataRow dr1 = dtSearchResults.NewRow();

  dr["title"] = "Uppal";

  dr["lat"] = "17.4018092";
  dr["lng"] = "78.5601892";
  dr["address"] = "33/1, Uppal";
  dtSearchResults.Rows.Add(dr1);

  DataRow dr2 = dtSearchResults.NewRow();

  rptMarkers.DataSource = dtSearchResults;
  rptMarkers.DataBind();
 }
}

VB.NET:

Protected Sub page_load(sender As Object, e As EventArgs)
 If Not IsPostBack Then
  Dim dValue As New DataColumn()
  Dim dlat As New DataColumn()
  Dim dlng As New DataColumn()
  Dim dadd As New DataColumn()

  dValue.ColumnName = "title"
  dValue.DataType = Type.[GetType]("System.String")
  dlat.ColumnName = "lat"
  dlat.DataType = Type.[GetType]("System.String")
  dlng.ColumnName = "lng"
  dlng.DataType = Type.[GetType]("System.String")
  dadd.ColumnName = "address"
  dadd.DataType = Type.[GetType]("System.String")


  ' Add these DataColumns into the DataTable
  dtSearchResults.Columns.Add(dadd)
  dtSearchResults.Columns.Add(dValue)

  dtSearchResults.Columns.Add(dlat)
  dtSearchResults.Columns.Add(dlng)

  Dim dr As DataRow = dtSearchResults.NewRow()

  dr("title") = "k R puram"

  dr("lat") = "13.0126101"
  dr("lng") = "77.7165925"
  dr("address") = "33/1, k r puram"
  dtSearchResults.Rows.Add(dr)

  Dim dr1 As DataRow = dtSearchResults.NewRow()

  dr("title") = "Uppal"

  dr("lat") = "17.4018092"
  dr("lng") = "78.5601892"
  dr("address") = "33/1, Uppal"
  dtSearchResults.Rows.Add(dr1)

  Dim dr2 As DataRow = dtSearchResults.NewRow()

  rptMarkers.DataSource = dtSearchResults
  rptMarkers.DataBind()
 End If
End Sub