Get Latitude and Longitude from Address using geocode map API in ASP.Net

Hi ahmadsubuhanl,

Generate your Geocode API key using the link.

https://geocode.maps.co/

Using the API

Url to get latitude and longitude using Address.

https://geocode.maps.co/search?q=address&api_key=API_Key

Url to get Address from latitude and longitude.

https://geocode.maps.co/reverse?lat=latitude&lon=longitude&api_key=API_Key

Refer below sample code.

HTML

<asp:TextBox ID="txtLocation" runat="server"></asp:TextBox>
<asp:Button ID="btnFind" runat="server" Text="Find Location" OnClick="OnSubmit" />
<hr />
Latitude:
<asp:Label ID="lblLatitude" runat="server"></asp:Label><br />
Longitude:
<asp:Label ID="lblLongitude" runat="server"></asp:Label>

Namespaces

C#

using System.Net;
using System.Web;
using System.IO;
using Newtonsoft.Json;

VB.Net

Imports System.Net
Imports System.Web
Imports System.IO
Imports Newtonsoft.Json

Code

C#

protected void OnSubmit(object sender, EventArgs e)
{
    string aPIKey = "API_KEY";
    string geocodeUrl = string.Format("https://geocode.maps.co/search?q={0}&api_key={1}&format=json", HttpUtility.UrlEncode(txtLocation.Text), aPIKey);
    HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(geocodeUrl);
    using (WebResponse response = request.GetResponse())
    {
        using (var reader = new StreamReader(response.GetResponseStream()))
        {
            string result = reader.ReadToEnd();
            List<Place> places = JsonConvert.DeserializeObject<List<Place>>(result);
            lblLatitude.Text = places[0].lat;
            lblLongitude.Text = places[0].lon;
        }
    }
}

public class Place
{
    public int place_id { get; set; }
    public string licence { get; set; }
    public string osm_type { get; set; }
    public object osm_id { get; set; }
    public List<string> boundingbox { get; set; }
    public string lat { get; set; }
    public string lon { get; set; }
    public string display_name { get; set; }
    public string @class { get; set; }
    public string type { get; set; }
    public double importance { get; set; }
}

VB.Net

Protected Sub OnSubmit(ByVal sender As Object, ByVal e As EventArgs)
    Dim aPIKey As String = "API_Key"
    Dim geocodeUrl As String = String.Format("https://geocode.maps.co/search?q={0}&api_key={1}&format=json", HttpUtility.UrlEncode(txtLocation.Text), aPIKey)
    Dim request As HttpWebRequest = CType(HttpWebRequest.Create(geocodeUrl), HttpWebRequest)
    Using response As WebResponse = request.GetResponse()
        Using reader = New StreamReader(response.GetResponseStream())
            Dim result As String = reader.ReadToEnd()
            Dim places As List(Of Place) = JsonConvert.DeserializeObject(Of List(Of Place))(result)
            lblLatitude.Text = places(0).lat
            lblLongitude.Text = places(0).lon
        End Using
    End Using
End Sub

Public Class Place
    Public Property place_id As Integer
    Public Property licence As String
    Public Property osm_type As String
    Public Property osm_id As Object
    Public Property boundingbox As List(Of String)
    Public Property lat As String
    Public Property lon As String
    Public Property display_name As String
    Public Property [class] As String
    Public Property type As String
    Public Property importance As Double
End Class

Screenshot

Note: API endpoints return JSON data by default.

For different formats, append &format={format}

{format} is one of the following: xml, json, jsonv2, geojson, geocodejson.