private async void Button_Clicked(object sender, EventArgs e)
        {
            if (ms.isSent == true)
            {
                if (codeEntry.Text == vrNumber.ToString())
                {
                    if (ts == 0)
                    {
                        string     url      = "https://api.shikkhanobish.com/api/Master/RegisterStudent";
                        HttpClient client   = new HttpClient();
                        string     jsonData = JsonConvert.SerializeObject(new {
                            UserName          = studentm.UserName,
                            Password          = studentm.Password,
                            PhoneNumber       = studentm.PhoneNumber,
                            Name              = studentm.Name,
                            Age               = studentm.Age,
                            Class             = studentm.Class,
                            InstitutionName   = studentm.InstitutionName,
                            RechargedAmount   = 0,
                            IsPending         = 0,
                            TotalTuitionTime  = 0,
                            TotalTeacherCount = 0,
                            AvarageRating     = 0,
                        });
                        StringContent       content  = new StringContent(jsonData, Encoding.UTF8, "application/json");
                        HttpResponseMessage response = await client.PostAsync(url, content).ConfigureAwait(true);

                        string result = await response.Content.ReadAsStringAsync().ConfigureAwait(true);

                        Response responseData = JsonConvert.DeserializeObject <Response>(result);
                        LoginByUserNameAndPassword();
                    }
                    else if (ts == 1)
                    {
                        OldStToNewSt chng = new OldStToNewSt();
                        await Application.Current.MainPage.Navigation.PushModalAsync(new GetInstIDandRules( chng.S_TO_Sc(studentm))).ConfigureAwait(false);
                    }
                }
                else
                {
                    Msglbl.Text = "Code doesn't match! Try again.";
                    //92746
                }
            }
            else if (codeEntry.Text == null)
            {
                Msglbl.Text = "Enter the code";
            }
        }
 private async void Button_Clicked_1(object sender, EventArgs e)
 {
     if (ts == 0)
     {
         await Application.Current.MainPage.Navigation.PushModalAsync(new StudentProfile ( studentm )).ConfigureAwait(false);
     }
     if (ts == 1)
     {
         OldStToNewSt chng = new OldStToNewSt();
         await Application.Current.MainPage.Navigation.PushModalAsync(new GetInstIDandRules ( chng.S_TO_Sc(studentm))).ConfigureAwait(false);
     }
 }