如何使用Windows创建路径.存储API

本文关键字：存储 API 路径 创建 何使用 Windows | 更新日期: 2023-09-27 17:52:46

System.IO.CreateDirectory()不能在。net上使用。

如何实现这个等效方法?StorageFolder.CreateFolderAsync()在当前文件夹中创建子文件夹，但在我的情况下，我有一个类似的路径，并且需要创建该路径中不存在的所有文件夹。

如何使用Windows创建路径.存储API

没有API与System.IO.CreateDirectory()完全相同的行为，所以我使用Windows.Storage类实现它:

    // Any and all directories specified in path are created, unless they already exist or unless 
    // some part of path is invalid. If the directory already exists, this method does not create a 
    // new directory.
    // The path parameter specifies a directory path, not a file path, and it must in 
    // the ApplicationData domain.
    // Trailing spaces are removed from the end of the path parameter before creating the directory.
    public static void CreateDirectory(string path)
    {
         path = path.Replace('/', '''').TrimEnd('''');
        StorageFolder folder = null;
        foreach(var f in new StorageFolder[] {
            ApplicationData.Current.LocalFolder, 
            ApplicationData.Current.RoamingFolder, 
            ApplicationData.Current.TemporaryFolder } )
        {
            string p = ParsePath(path, f);
            if (f != null)
            {
                path = p;
                folder = f;
                break;
            }
        }
        if(path == null)
            throw new NotSupportedException("This method implementation doesn't support " +
            "parameters outside paths accessible by ApplicationData.");
        string[] folderNames = path.Split('''');
        for (int i = 0; i < folderNames.Length; i++)
        {
            var task = folder.CreateFolderAsync(folderNames[i], CreationCollisionOption.OpenIfExists).AsTask();
            task.Wait();
            if (task.Exception != null)
                throw task.Exception;
            folder = task.Result;
        }
    }
    private static string ParsePath(string path, StorageFolder folder)
    {
        if (path.Contains(folder.Path))
            {
                path = path.Substring(path.LastIndexOf(folder.Path) + folder.Path.Length + 1);
                return path;
            }
        return null;
    }

要在windows store应用的沙箱外创建文件夹，你必须在app-manifest中添加文档库，以及文件权限。

有关库和文档的更详细的解释，请参阅这个博客

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