Get User's IP Address

Question

How can I get the current visitors IP address?

Answer 1

public String GetIP()
{
    string ipString;
    if (string.IsNullOrEmpty(Request.ServerVariables["HTTP_X_FORWARDED_FOR"]))
    {
        ipString = Request.ServerVariables["REMOTE_ADDR"];
    }
    else
    {
        ipString = Request.ServerVariables["HTTP_X_FORWARDED_FOR"].Split(",".ToCharArray(), StringSplitOptions.RemoveEmptyEntries).FirstOrDefault();
    }
    return ipString;
}

First trying to find out proxy IP,if its null we can get that system IP