如果我调用FilePicker
对象的PickMultipleFilesAsync
方法,是否可以添加“全选”选项。FilePicker的“Select all”选项
// Create the songs picker
var songsPicker = new FileOpenPicker();
songsPicker.SuggestedStartLocation = PickerLocationId.MusicLibrary;
songsPicker.ViewMode = PickerViewMode.List;
songsPicker.FileTypeFilter.Add(".mp3");
songsPicker.FileTypeFilter.Add(".wav");
songsPicker.FileTypeFilter.Add(".wma");
var inputFiles = await songsPicker.PickMultipleFilesAsync(); // Let the user pick the songs
如果用户想要选择多首歌曲,他必须在当时选择一首歌曲。一个接一个选择437首歌曲并不是很好的用户体验。
它看起来像这样: