How Do I Make A Geo Location Tag With Google Maps

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C#

ASP

ASP.NET

i need a small help from you guys i have a database name Shops and it's have two fields latitude and longitude and a geo location code help me to create user can set a loaction and it's save to database fields :)

<%@ Page Title="" Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true" CodeFile="mapsettings.aspx.cs" Inherits="mapsettings" %>
 
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
 
   <script type="text/javascript"
src="https://maps.googleapis.com/maps/api/js?key=AIzaSyC6v5-2uaq_wusHDktM9ILcqIrlPtnZgEk&sensor=false">
</script>
<script type="text/javascript">
    function initialize() {
        var lat = document.getElementById('txtlat').value;
        var lon = document.getElementById('txtlon').value;
        var myLatlng = new google.maps.LatLng(lat, lon) // This is used to center the map to show our markers
        var mapOptions = {
            center: myLatlng,
            zoom: 6,
            mapTypeId: google.maps.MapTypeId.ROADMAP,
            marker: true
        };
        var map = new google.maps.Map(document.getElementById("map_canvas"), mapOptions);
        var marker = new google.maps.Marker({
            position: myLatlng
        });
        marker.setMap(map);
    }
</script>
    
    
    
     <form id="form1"   runat="server">
<table>
<tr>
<td>Enter Latitude:</td>
<td><input type="text" id="txtlat" value="13.053147716796578" /> </td>
</tr>
<tr>
<td>Enter Longitude:</td>
<td><input type="text" id="txtlon" value="80.2501953125" /> </td>
</tr>
<tr>
<td></td>
<td><input type="button" value="Submit"  önclick="javascript: initialize()" /> </td>
</tr>
</table>
<div id="map_canvas" style="width: 500px; height: 400px"></div>
</form>