绑定到包含MVVM中的集合的模型

我开始使用MVVM（使用Caliburn.Micro）并遇到了一个问题，我正确地做了这个 . 我有一个模型 MediaCacherConfig ，它表示以json格式存储数据的文本文件 . 该模型包含2个字符串列表和一个字符串 .

我正在努力的是如何正确设置viewmodel，特别是 AddNewFolder() 方法 . 我'm not sure if I am raising the correct event and whether the viewmodel'的表示是正确的 . 我可以看到如何绑定到一个简单的属性，但绑定到一个集合看起来更像一个头部微调器，因为我每次添加一个项目（字符串）时创建一个全新的集合 .

此外，当我加载一个全新的模型时，我必须对所有对我没有意义的属性运行NotifyPropertyChanged（）方法 .

任何指导都非常感谢 .

public class MediaCacherConfig : IConfig
{

    public string DatabaseFileName { get; set; }

    public ICollection<string> FoldersToScan { get; set; }

    public ICollection<string> ExtensionsToIgnore { get; set; }

}

我有一个viewmodel MediaCacherConfigViewModel ：

public class MediaCacherConfigViewModel : PropertyChangedBase
{

    private MediaCacherConfig Model { get; set; }

    public string DatabaseFileName
    {
        get { return Model.DatabaseFileName; }
        set
        {
            Model.DatabaseFileName = value;
            NotifyOfPropertyChange(() => DatabaseFileName);
        }
    }

    public BindableCollection<string> FoldersToScan
    {
        get
        {
            return new BindableCollection<string>(Model.FoldersToScan);
        }
        set
        {
            Model.FoldersToScan = value;
            NotifyOfPropertyChange(() => FoldersToScan);
        }
    }

    public BindableCollection<string> ExtensionsToIgnore
    {
        get
        {
            return new BindableCollection<string>(Model.ExtensionsToIgnore);
        }
        set
        {
            Model.ExtensionsToIgnore = value;
            NotifyOfPropertyChange(() => ExtensionsToIgnore);
        }
    }

    /* Constructor */
    public MediaCacherConfigViewModel()
    {
        LoadSampleConfig();
    }

    /* Methods */
    public void LoadSampleConfig()
    {

        MediaCacherConfig c = new MediaCacherConfig();

        string sampleDatabaseFileName = "testing.config";

        List<string> sampleFoldersToScan = new List<string>();
        sampleFoldersToScan.Add("A");
        sampleFoldersToScan.Add("B");
        sampleFoldersToScan.Add("C");

        List<string> sampleExtensionsToIgnore = new List<string>();
        sampleExtensionsToIgnore.Add("txt");
        sampleExtensionsToIgnore.Add("mov");
        sampleExtensionsToIgnore.Add("db");
        sampleExtensionsToIgnore.Add("dat");

        c.DatabaseFileName = sampleDatabaseFileName;
        c.FoldersToScan = sampleFoldersToScan;
        c.ExtensionsToIgnore = sampleExtensionsToIgnore;

        Model = c;

        NotifyOfPropertyChange(() => DatabaseFileName);
        NotifyOfPropertyChange(() => FoldersToScan);
        NotifyOfPropertyChange(() => ExtensionsToIgnore);


    }

    public void AddNewFolder()
    {
        Model.FoldersToScan.Add("new one added");
        NotifyOfPropertyChange(() => FoldersToScan);

    }

    public void SaveConfig()
    {
        ConfigTools.Configure(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.CommonApplicationData), "Cacher", "Config"));

        ConfigTools.SaveConfig(Model,"sampleconfig.txt");              
    }

    public void LoadConfig()
    {
        ConfigTools.Configure(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.CommonApplicationData), "Cacher", "Config"));

        MediaCacherConfig m = ConfigTools.LoadConfig<MediaCacherConfig>("sampleconfig.txt") as MediaCacherConfig;
        Model = m;


        NotifyOfPropertyChange(() => DatabaseFileName);
        NotifyOfPropertyChange(() => FoldersToScan);
        NotifyOfPropertyChange(() => ExtensionsToIgnore);

    }
}

这是我的观点：

<UserControl x:Class="MediaCacher.Views.MediaCacherConfigView"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
         mc:Ignorable="d" 
         d:DesignHeight="413" Width="300">
<Grid MinWidth="300" MinHeight="300" Background="LightBlue" Margin="0,0,0,0">
    <Grid.RowDefinitions>
        <RowDefinition Height="409*"/>
        <RowDefinition Height="4*"/>
    </Grid.RowDefinitions>
    <TextBox x:Name="DatabaseFileName" TextWrapping="Wrap" Margin="10,64,10,0" HorizontalAlignment="Center" Width="280" Height="42" VerticalAlignment="Top"/>
    <ListBox x:Name="FoldersToScan" HorizontalAlignment="Left" Height="145" Margin="10,111,0,0" VerticalAlignment="Top" Width="280"/>
    <ListBox x:Name="ExtensionsToIgnore" HorizontalAlignment="Left" Height="145" Margin="10,261,0,0" VerticalAlignment="Top" Width="280"/>
    <Button x:Name="AddNewFolder" Content="Add" HorizontalAlignment="Left" Margin="10,10,0,0" VerticalAlignment="Top" Width="87" Height="49"/>
    <Button x:Name="LoadConfig" Content="Load" HorizontalAlignment="Left" Margin="102,10,0,0" VerticalAlignment="Top" Width="96" Height="49"/>
    <Button x:Name="SaveConfig" Content="Save" HorizontalAlignment="Left" Margin="203,10,0,0" VerticalAlignment="Top" Width="87" Height="49"/>
</Grid>