Возможно ли узнать форму post запроса?

using(WebClient client = new WebClient())
{
    System.Collections.Specialized.NameValueCollection reqparm = new System.Collections.Specialized.NameValueCollection();
    reqparm.Add("param1", "1");
    reqparm.Add("param2", "2");
    byte[] responsebytes = client.UploadValues("http://localhost", "POST", reqparm);
    string responsebody = Encoding.UTF8.GetString(responsebytes);
}

string data = "domain="+site+"&real=true2.1simpleJKF3";
                        var response = VkRequest.Request("http://www.whois-service.ru/",method:"POST",request:data,FollowRedirects:true);

using(WebClient client = new WebClient())
{
    System.Collections.Specialized.NameValueCollection reqparm = new System.Collections.Specialized.NameValueCollection();
    reqparm.Add("param1", "1");
    reqparm.Add("param2", "2");
    client.QueryString = reqparm;
    var response = client.DownloadString("http://localhost");
}

using(WebClient client = new WebClient())
{
   System.Collections.Specialized.NameValueCollection reqparm = new System.Collections.Specialized.NameValueCollection();
   reqparm.Add("param1", "1");
   reqparm.Add("param2", "2");
    var response=client.UploadValues("http://localhost", reqparm);

static public string запрос(string стр)
    {
        Uri адресури = new Uri(стр);
        form.FormDataCollection форма = new form.FormDataCollection(адресури);
 
 
        return форма.ToString();
    }