public string GetIPUpro()
        {
            string reponse = "";
            string IP = "";
            try
            {
                using (var httpClient = new HttpClient())
                {

                    using (var request = new HttpRequestMessage(new HttpMethod("GET"), "https://uproxy.pro/ip/?api&username=test10&password=th201293&getip=0"))
                    {
                        var response = httpClient.SendAsync(request);
                        reponse = response.Result.Content.ReadAsStringAsync().Result;
                    }
                };
                Regex r = new Regex("(?<=\"ip0\": \")(.*?)(?=\")");
                MatchCollection mc = r.Matches(reponse);
                return mc[0].Value;
            }
            catch (Exception ex)
            {
                fillrtb(richTextBox1, "\n" + ex.Message);
                IP = "";
                return IP;
            }
        }
        public bool ChangeIPPro()
        {
            string repone="";
            try
            {
                using (var httpClient = new HttpClient())
                {

                    using (var request = new HttpRequestMessage(new HttpMethod("GET"), "https://uproxy.pro/ip/?api&username=test10&password=th201293&ip=0"))
                    {
                        var response = httpClient.SendAsync(request);
                        repone = response.Result.Content.ReadAsStringAsync().Result;
                    }
                };
                if (repone.Contains("OK"))
                {
                    return true;
                }
                else
                {
                    fillrtb(richTextBox1, repone+"\n");
                }
            }
            catch (Exception ex)
            {
                fillrtb(richTextBox1, "\n" + ex.Message);
                return false;
            }
            return false;
        }