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Harshad Kokate 13Harshad Kokate 13 

I want to autoupdate the country and state from Pincode using third party apiI have an object named Customer Info

I want to autoupdate the country and state from Pincode using third party apiI have an object named Customer Info
I which fields are : *Name *Address *city *State *Country *zip Code
And In detail side of customer record :with refrence of address details (address, city, zip code)given above . the location get trace and shown in google maps

what i want to do is : if i keep state and country blank and inserted zip code and city on basis of this country and state shoul get auto populated
how could i do this??

I have vf page snippet as follows

<apex:page standardController="Customer_Information__c">
    <apex:pageBlock >
            <script type="text/javascript" src=""></script>
            <script type="text/javascript" src=""></script>
            <script type="text/javascript">
            $(document).ready(function() {
                var myOptions = {
                    zoom: 20,
                    mapTypeId: google.maps.MapTypeId.HYBRID,
                    mapTypeControl: true
                var map;
                var marker;
                var geocoder = new google.maps.Geocoder();
                var address = "{!Customer_Information__c.Address_Line__c}, " + "{!Customer_Information__c.City__c}, ";
                var infowindow = new google.maps.InfoWindow({
                content: "<b>{!Customer_Information__c.Name}</b>"
                geocoder.geocode( { address: address}, function(results, status) {
                    if (status == google.maps.GeocoderStatus.OK && results.length) {
                        if (status != google.maps.GeocoderStatus.ZERO_RESULTS) {
                            //create map
                            map = new google.maps.Map(document.getElementById("map"), myOptions);
                            //center map
                            //create marker
                            marker = new google.maps.Marker({
                            position: results[0].geometry.location,
                            map: map,
                            title: "{!Customer_Information__c.Name}"
                            //add listeners
                            google.maps.event.addListener(marker, 'click', function() {
                            google.maps.event.addListener(infowindow, 'closeclick', function() {
                    } else {
                        $('#map').css({'height' : '15px'});
                        $('#map').html("Oops! {!Customer_Information__c.Name}'s address could not be found, please make sure the address is correct.");
                function resizeIframe() {
                    var me =;
                    if (me) {
                        var iframes = parent.document.getElementsByName(me);
                        if (iframes && iframes.length == 1) {
                            height = document.body.offsetHeight;
                            iframes[0].style.height = height + "px";
                #map {
                    font-family: Arial;
                    line-height:normal !important;
            <div id="map"></div>

it shows above output

ShashankShashank (Salesforce Developers) 
You can probably use an apex trigger and make a callout using the @future annotation to the external app and get the state and country details. This is however asynchronous and the update does not happen immediately. here's how: