private string? _SelectedLanguage;
        public string SelectedLanguage {
            get => _SelectedLanguage!;
            set {
                if (_SelectedLanguage != value) {
                    _SelectedLanguage = value;
                    StartCommand.RaiseCanExecuteChanged();
                }
            }
        }


        private bool _IsBusy;
        public bool IsBusy {
            get { return _IsBusy; }
            set {
                if (_IsBusy != value) {
                    _IsBusy = value;
                    StartCommand.RaiseCanExecuteChanged();
                }
            }
        }


        public AudioPageViewModel() {
            InitListLanguages();
            CanBePressed = true;
            AzureTranscription = new AzureTranscriptionService();
            DialogHelper = new DialogHelper();
            FolderHelper = new FolderHelper();
            AudioHelper = new AudioHelper();
            ProcessMsgVisibility = Visibility.Hidden;
            MicrosofWordPathVisibility = Visibility.Hidden;
            PickFileCommad = new Command(PickFileAction);
            StartCommand = new AsyncCommand(StartAction, CanStartAction);
            CopyDocumentPathCommand = new Command(CopyDocumentPathAction);
        }

        private void CopyDocumentPathAction() {
            Clipboard.SetText(MicrosofWordtDocumentPath);
        }

        private async Task StartAction() {

            IsBusy = true;
            ProcessMsgVisibility = Visibility.Visible;
            MicrosofWordPathVisibility = Visibility.Hidden;
            CanBePressed = false;

            var FileWithoutExtension = Path.GetFileNameWithoutExtension
                (FilePath);

            var AudioPath = FolderHelper.CreateFolder(ConstantsHelpers.AUDIO);

            var DocumentPath = FolderHelper.CreateFolder();

            var AudioFileNamePath = Path.Combine(AudioPath, $"{FileWithoutExtension}{ConstantsHelpers.WAV}");

            var ConvertedAudioPath = AudioHelper.Converter(FilePath!, AudioFileNamePath);

            var DocumentName = Path.Combine(DocumentPath, $"{FileWithoutExtension}{ConstantsHelpers.DOCX}");

            var str = await AzureTranscription.ConvertToTextAsync(ConvertedAudioPath,
            FileWithoutExtension!, SelectedLanguage);

            IsBusy = false;
            ProcessMsgVisibility = Visibility.Hidden;
            CanBePressed = true;
            MicrosofWordPathVisibility = Visibility.Visible;
            MicrosofWordtDocumentPath = DocumentName;
        }

        private bool CanStartAction(object arg) {
            return !string.IsNullOrEmpty(SelectedLanguage) &&
                   !string.IsNullOrEmpty(FilePath) &&
                   !IsBusy;
        }


        private void PickFileAction() {
            var FullPath = DialogHelper.GetFilePath(ConstantsHelpers.AUDIO);
            FilePath = FullPath;

            StartCommand?.RaiseCanExecuteChanged();
        }

        private void InitListLanguages() {

            LanguagesDictionary = new Dictionary<int, Languages>() {

                {1, new Languages { Name = "Spanish", Code = "es"} },
                {2, new Languages { Name = "English", Code = "en"} }
            };
        }

UI


    <Page.DataContext>
        <vm:AudioPageViewModel />
    </Page.DataContext>

    <Grid Margin="20">
        <Grid.ColumnDefinitions>
            <ColumnDefinition Width="Auto" />
            <ColumnDefinition />
            <ColumnDefinition Width="Auto" />
            <ColumnDefinition Width="Auto" />
        </Grid.ColumnDefinitions>
        <Grid.RowDefinitions>
            <RowDefinition />
            <RowDefinition />
            <RowDefinition />
            <RowDefinition />
            <RowDefinition />
            <RowDefinition />
            <RowDefinition Height="80" />
        </Grid.RowDefinitions>

        <Label
            Grid.ColumnSpan="3"
            HorizontalAlignment="Center"
            VerticalAlignment="Top"
            Content="{x:Static res:Lang.AudioServiceTitle}"
            FontSize="18"
            FontWeight="Bold" />

        <Button
            Grid.Row="1"
            HorizontalAlignment="Center"
            VerticalAlignment="Center"
            Command="{Binding PickFileCommad}"
            Content="{x:Static res:Lang.File}"
            Focusable="False"
            FontWeight="Bold"
            IsEnabled="{Binding CanBePressed}" />

        <TextBox
            Grid.Row="1"
            Grid.Column="1"
            Grid.ColumnSpan="3"
            Margin="10"
            VerticalAlignment="Center"
            IsReadOnly="True"
            Text="{Binding FilePath}" />

        <Label
            Grid.Row="2"
            VerticalContentAlignment="Center"
            Content="{x:Static res:Lang.FileLang}" />


        <ComboBox
            Grid.Row="2"
            Grid.Column="1"
            Grid.ColumnSpan="3"
            Margin="10"
            HorizontalAlignment="Stretch"
            VerticalAlignment="Center"
            ui:ControlHelper.PlaceholderText="{x:Static res:Lang.SelectLenguague}"
            DisplayMemberPath="Value.Name"
            IsEnabled="{Binding CanBePressed}"
            ItemsSource="{Binding LanguagesDictionary}"
            SelectedValue="{Binding SelectedLanguage}"
            SelectedValuePath="Value.Code" />


        <Label
            Grid.Row="3"
            Grid.RowSpan="2"
            Grid.ColumnSpan="4"
            HorizontalContentAlignment="Center"
            VerticalContentAlignment="Top"
            Content="{x:Static res:Lang.ProcessMsg}"
            Visibility="{Binding ProcessMsgVisibility}" />

        <ui:ProgressRing
            Grid.Row="3"
            Grid.RowSpan="2"
            Grid.ColumnSpan="4"
            Width="60"
            Height="60"
            VerticalAlignment="Center"
            IsActive="{Binding IsBusy}" />

        <Button
            Grid.Row="5"
            Grid.ColumnSpan="4"
            HorizontalAlignment="Stretch"
            Command="{Binding StartCommand}"
            Content="{x:Static res:Lang.Work}"
            Focusable="False" />

        <Label
            Grid.Row="6"
            VerticalAlignment="Center"
            Content="{x:Static res:Lang.Path}"
            Visibility="{Binding MicrosofWordPathVisibility}" />

        <TextBox
            Grid.Row="6"
            Grid.Column="1"
            Margin="10"
            VerticalAlignment="Center"
            IsReadOnly="True"
            Text="{Binding MicrosofWordtDocumentPath}"
            Visibility="{Binding MicrosofWordPathVisibility}" />

        <Button
            Grid.Row="6"
            Grid.Column="2"
            Margin="10"
            Visibility="{Binding MicrosofWordPathVisibility}"
            Focusable="False"
            VerticalAlignment="Center"
            Command="{Binding CopyDocumentPathCommand}"
            Content="{x:Static res:Lang.Copy}" />
        
        <Button
            Grid.Row="6"
            Grid.Column="3"
            Focusable="False"
            Visibility="{Binding MicrosofWordPathVisibility}"
            Margin="10,0,40,0"
            HorizontalAlignment="Center"
            VerticalAlignment="Center"
            Content="Open" />
    </Grid>