Explicação: Eu tenho que obter o FolderBrowserDialog Box depois de clicar no botão Procurar. Na caixa de diálogo FolderBrowserDialog, se eu selecionar qualquer pasta e clicar em ok, esse caminho de pasta específico, juntamente com o nome da pasta, deve ser mostrado na caixa de texto ao lado do botão Procurar .... Mas não recebi nada quando clicamos no botão Procurar. Por favor, verifique meu código e me corrija ...

View.xaml :

<Window....  xmlns:VM="clr-namespace:myproject.myViewModel"
...  >
<Window.DataContext><VM:myViewModel/>
<Grid>...
<TextBlock  Text="Folder to save files"  VerticalAlignment="Center" />
<TextBox   Text="{Binding Path=FoldernameWithPath  , UpdateSourceTrigger=PropertyChanged, Mode=TwoWay}"   Height="26"    IsReadOnly="True"  VerticalContentAlignment="Center"    Width="150"    />
 <Button      Content="Browse"    Height="26" VerticalAlignment="Bottom"  MinWidth="45"  Command="{Binding OpenFolderCommand}" />
</Grid>
</window> 

ViewModel.cs

    public ICommand OpenFolderCommand
    {
        get => new RelayCommand(a => this.OpenFolder(), p => CanOpenFolder());
    }
    private string _foldernameWithPath;
    public string FoldernameWithPath
    {
        get { return _foldernameWithPath; }
        set
        {
            if (value == _foldernameWithPath)
            {
                return;
            }
            else
            {
                _foldernameWithPath = value;
                OnPropertyChanged("FoldernameWithPath");
            }
        }
    }
    public bool CanOpenFolder()
    {
        return true;
    }
    private void OpenFolder()
    {
        FolderBrowserDialog openFolderDialog = new FolderBrowserDialog();
        if (openFolderDialog.ShowDialog() == System.Windows.Forms.DialogResult.OK && OpenFolderCommand.CanExecute(openFolderDialog.SelectedPath))
        {
            OpenFolderCommand.Execute(openFolderDialog.SelectedPath);
            FoldernameWithPath = openFolderDialog.SelectedPath;
        }
    }