private void ButtonDodaj(object sender, RoutedEventArgs e) { if (TextBoxImie.Text != "" & TextBoxNazwisko.Text != "" & TextBoxPesel.Text != "" & DatePickerDataUrodzenia.Text != "" & TextBoxNumerTelefonu.Text != "") { var webAddr = "http://192.168.23.128:3000/api/events"; var httpWebRequest = (HttpWebRequest)WebRequest.Create(webAddr); httpWebRequest.ContentType = "application/json; charset=utf-8"; httpWebRequest.Method = "POST"; using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream())) { ListaKlientow Klient = new ListaKlientow(); Klient.Imie = TextBoxImie.Text; Klient.Nazwisko = TextBoxNazwisko.Text; Klient.Pesel = int.Parse(TextBoxPesel.Text); Klient.DataUrodzenia = DatePickerDataUrodzenia.Text; Klient.NumerTelefonu = int.Parse(TextBoxNumerTelefonu.Text); string jsonString = JsonHelper.JsonSerializer(Klient); streamWriter.Write(jsonString); streamWriter.Flush(); } var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse(); using (var streamReader = new StreamReader(httpResponse.GetResponseStream())) { var result = streamReader.ReadToEnd(); System.Windows.MessageBox.Show(result); } } else { System.Windows.MessageBox.Show("Wypełnij wszystkie pola"); } }