使用FolderPicker时显示文件夹中的文件

Question

Is there any possible way to show the files in the folders when using FolderPicker ?

Code :

FolderPicker folderPicker = new FolderPicker();
folderPicker.ViewMode = PickerViewMode.Thumbnail;
folderPicker.SuggestedStartLocation = PickerLocationId.ComputerFolder;
folderPicker.FileTypeFilter.Add("*");

return await folderPicker.PickSingleFolderAsync();

Answer 1

If you use the WindowsAPICodepack, you can do it like so:

var openFolder = new CommonOpenFileDialog();
openFolder.AllowNonFileSystemItems = true;
openFolder.Multiselect = true;
openFolder.IsFolderPicker = true;
openFolder.Title = "Select folders.";

if (openFolder.ShowDialog() != CommonFileDialogResult.Ok)
{
    MessageBox.Show("No folder selected.");
    return;
}

// get all the directories in selected directory
var dirs = openFolder.FileNames.ToArray();

However if you're using just Windows.Storage.Pickers , the code you've provided is the example given on the Microsoft docs ( https://docs.microsoft.com/en-us/uwp/api/windows.storage.pickers.folderpicker ), so I'm not too sure why that doesn't work.

Answer 2

For the built-in FolderPicker, it's impossible. You could call the 'StorageFolder.GetFilesAsync' method to get the files in the current folder.

FolderPicker folderPicker = new FolderPicker();
folderPicker.ViewMode = PickerViewMode.List;
folderPicker.SuggestedStartLocation = PickerLocationId.PicturesLibrary;
folderPicker.FileTypeFilter.Add("*");

var folder = await folderPicker.PickSingleFolderAsync();

foreach (var files in await folder.GetFilesAsync())
{
    Debug.WriteLine(files.DisplayName);
}

If you want to show these files on the UI, you could choose some list controls to show them. For example, List view and grid view .