使用 getFilesAsync 和 getFoldersAsync 获取文件夹中的文件

Question

有了这个

public IReadOnlyList<StorageFolder> folderList;

并用它来做

folderList = await musicFolder.GetFoldersAsync(CommonFolderQuery.GroupByAlbum);

我应该把所有文件夹都放在 Music 文件夹中（musicFolder 是 knownfolders.musiclibrary）

但是当我在一个圆环内时，我尝试做

for (int i=0; i<folderList.Count; i++)
                    {
                        if (folderList[i].Name==(lbMusic_Albums.SelectedItem as songStruct).songName)
                        {

                            StorageFolder current = folderList[i];

                            IReadOnlyList<StorageFile> TempFileList = await current.GetFilesAsync(CommonFileQuery.OrderByName); //OTHER CODE

我在等待线路系统参数异常..我不明白为什么，我传递正确了吗？

System.ArgumentException: Value does not fall within the expected range. at Windows.Storage.StorageFolder.GetFilesAsync(CommonFileQuery query) at DUS.MainPage.d__31.MoveNext()

Answer 1

这样解决了:D

FolderLib = await musicFolder.GetFoldersAsync(CommonFolderQuery.GroupByAlbum);
//Obtaining all the folders and do for every folder this


 foreach(StorageFolder item in FolderLib)
 {  // Take the subfolder
     SubFolderlib = await item.GetFilesAsync();
    // and do stuff with it
 }

FolderLib 和 SubFolderLib 是

public IReadOnlyList<StorageFile> SubFolderlib;

public IReadOnlyList<StorageFolder> FolderLib;

使用 getFilesAsync 和 getFoldersAsync 获取文件夹中的文件

Get File inside a folder with getFilesAsync and getFoldersAsync

c#

xaml

windows-phone

runtime