private void SaveNeuron_Click(object sender, RoutedEventArgs e) { SaveFileDialog saveFileDialog = new() { DefaultExt = ".json", Filter = "JSON files (*.json)|*.json" }; bool?result = saveFileDialog.ShowDialog(); if (result.HasValue && result.Value) { JsonFileMapper.SaveObject(saveFileDialog.FileName, NeuronViewModel.Neuron); } }