Get IP Address

public void GetIPAddress()
{
    1st method:-    
    string HostName = String.Empty;
    HostName = System.Net.Dns.GetHostName();
    Response.Write(System.Net.Dns.GetHostAddresses(HostName).GetValue(1).ToString()); 
    
    2nd method:- 
    string IpAddress = Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
    if (IpAddress == null)
    {
        IpAddress = Request.ServerVariables["REMOTE_ADDR"];
    }
    Response.Write(IpAddress);
}