public async void AddCare(Soin soin)
 {
     HttpClient client = new HttpClient();
     var json = JsonConvert.SerializeObject(soin);
     HttpContent content = new StringContent(json, Encoding.UTF8, "application/json");
     HttpResponseMessage response = await client.PostAsync("http://nurseapi.azurewebsites.net/api/soins", content);
     if (response.IsSuccessStatusCode)
     {
         await new MessageDialog("Success !").ShowAsync();
     }
     else
     {
         await new MessageDialog("Add Failed !").ShowAsync();
     }
 }
 public void AddCare()
 {
     Soin soin = new Soin();
     String date = DateSelected.Day + "-" + DateSelected.Month + "-" + DateSelected.Year;
     soin.dateSoin = date;
     soin.IdInfi = NurseSelected.IdInfirmier;
     soin.IdPatient = PatientSelected.IdPatient;
     myDataAccess.AddCare(soin);
     new MessageDialog("Ajout confirmé").ShowAsync();
 }