Windows 7库（Library）：C#快速参考

如果你对windows7库的概念不了解，请先看这篇介绍：Windows 7新功能：库(Library)

以下是一些常见的Windows 7库功能的一个快速参考，使用了Windows API Code Pack。

这篇文章中的代码来自Alon和Sela工作小组的成员。

每个Windows 7库用一个XML文件表示，扩展名为.library-ms。

通用库文件通常存储在：C:\Users\<username>\AppData\Roaming\Microsoft \Windows\Libraries\。

例如，我们现在使用图片库，如以下代码：

1. 1 libraryName = Pictures 
   
2. 2 locationPath = C:\Users\<username>\AppData\Roaming\Microsoft\Windows\Libraries\
   

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注意：您可以在任何地方创建库文件，不一定是在上述文件夹中。

功能：

创建一个新库:

1. 1 ShellLibrary shellLibrary = 
   
2. 2    new ShellLibrary(libraryName, locationPath, overwriteExisting);
   

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添加文件夹到现有库:

1. 1 using (ShellLibrary shellLibrary =
   
2. 2    ShellLibrary.Load(libraryName, folderPath, isReadOnly))
   
3. 3 {
   
4. 4    shellLibrary.Add(folderToAdd);
   
5. 5 }
   

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从库中删除文件夹:

1. 1 using (ShellLibrary shellLibrary =
   
2. 2    ShellLibrary.Load(libraryName, folderPath, isReadOnly))
   
3. 3 {
   
4. 4    shellLibrary.Remove(folderToRemove);
   
5. 5 }
   

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枚举库文件夹:

1. 1 using (ShellLibrary shellLibrary = 
   
2. 2    ShellLibrary.Load(libraryName, folderPath, isReadOnly))
   
3. 3 {
   
4. 4    foreach (ShellFileSystemFolder folder in shellLibrary)
   
5. 5    {
   
6. 6        Debug.WriteLine(folder.Path);
   
7. 7    }
   
8. 8 }
   

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更改默认保存位置:

1. 1 using (ShellLibrary shellLibrary = 
   
2. 2    ShellLibrary.Load(libraryName, folderPath, isReadOnly))
   
3. 3 {
   
4. 4    shellLibrary.DefaultSaveFolder = newSaveLocation;
   
5. 5 }
   

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更改库图标:

1. 1 using (ShellLibrary shellLibrary = 
   
2. 2    ShellLibrary.Load(libraryName, folderPath, isReadOnly))
   
3. 3 {
   
4. 4    shellLibrary.IconResourceId = new IconReference(moduleName, resourceId);
   
5. 5 }
   

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锁住库浏览导航窗格:

1. 1 using (ShellLibrary shellLibrary = 
   
2. 2    ShellLibrary.Load(libraryName, folderPath, isReadOnly))
   
3. 3 {
   
4. 4    shellLibrary.IsPinnedToNavigationPane = true;
   
5. 5 }
   

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设置库的类型:

1. 1 using (ShellLibrary shellLibrary = 
   
2. 2    ShellLibrary.Load(libraryName, folderPath, isReadOnly))
   
3. 3 {
   
4. 4    shellLibrary.LibraryType = libraryType;
   
5. 5    
   
6. 6    // libraryType can be:
   
7. 7    //  LibraryFolderType.Generic
   
8. 8    //  LibraryFolderType.Documents
   
9. 9    //  LibraryFolderType.Music
   
10. 10    //  LibraryFolderType.Pictures
    
11. 11    //  LibraryFolderType.Videos
    
12. 12 }
    

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打开库管理界面:

1. 1 ShellLibrary.ShowManageLibraryUI(
   
2. 2    libraryName, folderPath, hOwnerWnd, title, instruction, allowNonIndexableLocations);
   

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删除库:

1. 1 string FileExtension = ".library-ms";
   
2. 2 
   
3. 3 File.Delete(Path.Combine(folderPath,libraryName + FileExtension));
   

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获取库的更改通知:

1. 1 string FileExtension = ".library-ms";
   
2. 2 
   
3. 3 FileSystemWatcher libraryWatcher = new FileSystemWatcher(folderPath);
   
4. 4 libraryWatcher.NotifyFilter = NotifyFilters.LastWrite;
   
5. 5 libraryWatcher.Filter = libraryName + FileExtension;
   
6. 6 libraryWatcher.IncludeSubdirectories = false;
   
7. 7 
   
8. 8 libraryWatcher.Changed += (s, e) =>
   
9. 9 {
   
10. 10    //cross thread call
    
11. 11    this.Dispatcher.Invoke(new Action(() =>
    
12. 12        {
    
13. 13            using (ShellLibrary shellLibrary = 
    
14. 14                ShellLibrary.Load(libraryName, folderPath, isReadOnly))
    
15. 15            {
    
16. 16                // get changed information
    
17. 17                ...
    
18. 18            }
    
19. 19        }));
    
20. 20 };
    
21. 21 libraryWatcher.EnableRaisingEvents = true;
    

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