how can i trace user's location data by tracing ip address?

You can't. There is no inherent correlation between an IP address and the physical location of the client.

The best you can get is the geographic location of the registered supplier of the IP address. That will generally resolve to a city, but it may be several hundred miles from the actual location of the client.

However, it is possible, but most of the suppliers will cost you money. Google[^] And I suggest you check first,. as the quality of the information varies a lot. (My IP resolves to about 25 miles away on some, "Unknown city" on others.)

Use HostIp.Info[^] and get the Geo API.
Or use any of the webservices available.


This[^] may help.

Ip is the internet protocol for communication between nodes.
Ip is used to identify a host and address the location. If we need to identify the user
who are all accessing our website and store the ip address in our database is very simple and very easier.
This is the way to track the users ip address. Fetch a client's ip address as soon as he access our web site in asp.net.
Some of them may use a proxy ip address. But we can get their ip address with this simple code.

Add following namespace in page
using System.Net;

string ipAddress ="";

//Get the Host Name
string hostName = Dns.GetHostName();
//Get The Ip Host Entry
IPHostEntry ipHostEntry = Dns.GetHostEntry(hostName);
//Get The Ip Address From The Ip Host Entry Address List
IPAddress[] ipAddress = ipHostEntry.AddressList;
ipAddress = ipAddress[ipAddress.Length - 1].ToString();

To get the Geolocation of IP address you can use the various API which would gives you result in various different format(csv,xml)
http://www.ipinfodb.com/ip_location_api.php

You can get Geolocation information from
http://api.ipinfodb.com/v2/ip_query.php?key=<your_api_key>&ip=74.125.45.100&timezone=false

Response comes in XML format. using xml deserialize, I deserialize the response.
[XmlRootAttribute(ElementName = "Response", IsNullable = false)]

public class IPLocator
{

private string longitude;
public string Longitude
{
get { return longitude; }
set { longitude = value; }
}

private string latitude;
public string Latitude
{
get { return latitude; }
set { latitude = value; }
}

private string zip;
public string Zip
{
get { return zip; }
set { zip = value; }
}

private string ip;
public string IP
{
get { return ip; }
set { ip = value; }
}
}

After deserialization IPLocater class bind All properties of requested IP Address.

Binding Class is return IPLocater class.


Code of IPDetals Class

public IPLocator GetData(string ipAddress)
    {
        IPLocator ipLoc = new IPLocator();
        try
        {
            //apiKey can be generated from below link
            //http://www.ipinfodb.com/ip_location_api.php
            string apiKey = "anykey";

            string path = "http://api.ipinfodb.com/v2/ip_query.php?key=" + apiKey + "&ip=" + ipAddress + "&timezone=false";
            WebClient client = new WebClient();
            string[] eResult = client.DownloadString(path).ToString().Split(',');
            if (eResult.Length > 0)
                ipLoc = (IPLocator)Deserialize(eResult[0].ToString());
        }
        catch
        { }
        return ipLoc;
    }


//Desrialize XML String

private Object Deserialize(String pXmlizedString)
{
XmlSerializer xs = new XmlSerializer(typeof(IPLocator));
MemoryStream memoryStream = new MemoryStream(StringToUTF8ByteArray(pXmlizedString));
XmlTextWriter xmlTextWriter = new XmlTextWriter(memoryStream, Encoding.UTF8);
return xs.Deserialize(memoryStream);
}

//String to UTF8ByteArray
private Byte[] StringToUTF8ByteArray(String pXmlString)
{
UTF8Encoding encoding = new UTF8Encoding();
Byte[] byteArray = encoding.GetBytes(pXmlString);
return byteArray;
}
}


//You can get the Geolocation infoamation here
string ipAddress = HttpContext.Current.Request.UserHostAddress;
IPDetails ipDetails=new IPDetails ();
IPLocator ipLocater = ipDetails.GetData(ipAddress);
Response.Write(ipLocater.CountryName);

You aren't really showing us much initiative in solving your own problem, but I won't leave you completely out in the cold.
Do a search based on "C# how to get location from ip address" and check out the results. Because you just want someone to dump the code for you, I'm not even going to linkify the search like I usually do.