WPF多个对话框，可见性属性问题

<Window x:Class="MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:local="clr-namespace:YourNamespace"
        Title="MainWindow" Height="450" Width="800">
    <Window.DataContext>
        <local:MainViewModel />
    </Window.DataContext>
    
    <Grid>
        <!-- 主要内容 -->
    </Grid>
    
    <Button Content="打开对话框" Command="{Binding OpenDialogCommand}" />
    
    <Window x:Name="DialogWindow" Visibility="{Binding IsDialogVisible, Converter={StaticResource BoolToVisibilityConverter}}">
        <!-- 对话框内容 -->
    </Window>
</Window>

public class MainViewModel : INotifyPropertyChanged
{
    private bool isDialogVisible;
    
    public bool IsDialogVisible
    {
        get { return isDialogVisible; }
        set
        {
            if (isDialogVisible != value)
            {
                isDialogVisible = value;
                OnPropertyChanged(nameof(IsDialogVisible));
            }
        }
    }
    
    public ICommand OpenDialogCommand { get; }
    
    public MainViewModel()
    {
        OpenDialogCommand = new RelayCommand(OpenDialog);
    }
    
    private void OpenDialog()
    {
        IsDialogVisible = true;
    }
    
    // INotifyPropertyChanged implementation...
}