Windows 7库（Library）：C#快速参考

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

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

添加文件夹到现有库:

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

从库中删除文件夹:

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

枚举库文件夹:

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

更改默认保存位置:

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

更改库图标:

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

锁住库浏览导航窗格:

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

设置库的类型:

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

打开库管理界面:

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

删除库:

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

获取库的更改通知:

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

原文：http://blogs.microsoft.co.il/blogs/arik/archive/2010/03/15/windows-7-libraries-c-quick-reference.aspx

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