How to programatically add entry in ip restriction IIS in web api using c#

public class IpController : ApiController
{
    public string GetIp()
    {
        return GetClientIp();
    }

    private string GetClientIp(HttpRequestMessage request = null)
    {
        request = request ?? Request;

        if (request.Properties.ContainsKey("MS_HttpContext"))
        {
            return ((HttpContextWrapper)request.Properties["MS_HttpContext"]).Request.UserHostAddress;
        }

        else if (HttpContext.Current != null)
        {
            return HttpContext.Current.Request.UserHostAddress;
        }
        else
        {
            return null;
        }
    }

}

Now,i want to add this ip address(entry or ip address of current requesting user) in iis. I am working with web api and iis version7. How can i get this ip address and add it to iis programatically in my service class.

Thank you.