How to get the computer name and IP address

Question

protected void btnSubmit_Click(object sender, EventArgs e)
{
//var ip=HttpContext.Current.
//var host = HttpContext.Current.Request.UserHostName.Trim();
//txtIPs.Text = host.ToString();
 
//var host = System.Web.HttpContext.Current.Request.LogonUserIdentity.Name.ToString();
//txtIPs.Text = host.ToString();
//string strDNS = Dns.GetHostName();
//string aa = System.Security.Principal.WindowsIdentity.GetCurrent().User.ToString().Trim();
//string bb = System.Security.Principal.WindowsIdentity.GetCurrent().Name.Substring(5).ToString().Trim();
//txtIPs.Text = bb;
 
//DNSLookup(txtDomain.Text);
//string ip = txtIPs.Text;
//string str = Server.HtmlEncode(Request.UserHostAddress);
//txtIPs.Text = str;
string strHostName = string.Empty;
strHostName = Dns.GetHostName();
IPHostEntry ipEntry = Dns.GetHostByName(strHostName);
IPAddress[] addr = ipEntry.AddressList;
for (int i = 0; i < addr.Length; i++)
{
txtIPs.Text = ("IP Address " + i + addr[i].ToString() + ", HostName: " + strHostName);
}
 
SqlConnection con = new SqlConnection(ConfigurationManager.AppSettings["ConStr"]);
SqlDataAdapter da = new SqlDataAdapter("Insert Into pew(name,ip)values('"+txtName.Text+"','" +txtIPs.Text+ "')", con);
DataSet ds = new DataSet();
da.Fill(ds);

lblStatus.Text = "Data Successfully Inserted";
txtName.Text = "";
txtIPs.Text = "";

}

HELLO SIR , I M FACING SOME PROBLEM,ACTUALLY I GOT THE COMPUTER NAME AND IP ADDRESS IN PARTICULAR SYSTEM WHERE DID I IMPLEMENT THE CODE, WITH THE HELP OF THIS CODE ITS PROPER 
WORKING BUT AFTER HOSTING THE WEBSITE IN IIS SERVER, IT'S DISPLAY THE COMPUTER NAME AND IP ONLY THE SERVER . WHILE I WANT TO THAT I FORWARD THE LINK TO SOMEONE THAN I GOT THE IP AND COMPUTER NAME HIM/HER . PLEASE HELP ME, ITS VERY URGENT ITS FEEDBACK FORM ,IF ANY ERROR IN THIS CODE THAN PLEASE CORRECT THIS AND SEND TO ME ...