/// <summary>
/// This is the click handler for the Search button
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
async private void Search_Click(object sender, RoutedEventArgs e)
{
OutputProgressRing.IsActive = true;
Windows.Storage.Search.QueryOptions queryOptions = new Windows.Storage.Search.QueryOptions(Windows.Storage.Search.CommonFileQuery.OrderBySearchRank, null);
queryOptions.UserSearchFilter = QueryInputBox.Text;
// This try/catch block is for scenarios where the Homegroup Known Folder is not available.
try
{
Windows.Storage.Search.StorageFileQueryResult queryResults = Windows.Storage.KnownFolders.HomeGroup.CreateFileQueryWithOptions(queryOptions);
System.Collections.Generic.IReadOnlyList<Windows.Storage.StorageFile> files = await queryResults.GetFilesAsync();
if (files.Count > 0)
{
string outputString = (files.Count == 1) ? "One file found\n\n" : files.Count.ToString() + " files found\n\n";
foreach (Windows.Storage.StorageFile file in files)
{
outputString += file.Name + "\n";
}
rootPage.NotifyUser(outputString, NotifyType.StatusMessage);
}
else
{
rootPage.NotifyUser("No files found.", NotifyType.StatusMessage);
}
}
catch (Exception ex)
{
rootPage.NotifyUser(ex.Message, NotifyType.ErrorMessage);
}
OutputProgressRing.IsActive = false;
}
public static async Task <IReadOnlyList <StorageFile> > ReadFilesAsync(IReadOnlyList <IStorageItem> p)
{
var list = new List <StorageFile>();
foreach (var item in p)
{
if (item is IStorageFile file)
{
foreach (var types in Consts.FileTypes)
{
if (types == file.FileType)
{
list.Add(file as StorageFile);
break;
}
}
}
else if (item is StorageFolder folder)
{
var options = new Windows.Storage.Search.QueryOptions
{
FileTypeFilter = { ".flac", ".wav", ".m4a", ".aac", ".mp3", ".wma", ".ogg", ".oga" },
FolderDepth = Windows.Storage.Search.FolderDepth.Deep,
IndexerOption = Windows.Storage.Search.IndexerOption.DoNotUseIndexer,
};
var query = folder.CreateFileQueryWithOptions(options);
list.AddRange(await query.GetFilesAsync());
}
}
return(list);
}
/// <summary>
/// This is the click handler for the Search button
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
async private void Search_Click(object sender, RoutedEventArgs e)
{
OutputProgressRing.IsActive = true;
Windows.Storage.Search.QueryOptions queryOptions = new Windows.Storage.Search.QueryOptions(Windows.Storage.Search.CommonFileQuery.OrderBySearchRank, null);
queryOptions.UserSearchFilter = QueryInputBox.Text;
// This try/catch block is for scenarios where the Homegroup Known Folder is not available.
try
{
Windows.Storage.Search.StorageFileQueryResult queryResults = Windows.Storage.KnownFolders.HomeGroup.CreateFileQueryWithOptions(queryOptions);
System.Collections.Generic.IReadOnlyList <Windows.Storage.StorageFile> files = await queryResults.GetFilesAsync();
if (files.Count > 0)
{
string outputString = (files.Count == 1) ? "One file found\n\n" : files.Count.ToString() + " files found\n\n";
foreach (Windows.Storage.StorageFile file in files)
{
outputString += file.Name + "\n";
}
rootPage.NotifyUser(outputString, NotifyType.StatusMessage);
}
else
{
rootPage.NotifyUser("No files found.", NotifyType.StatusMessage);
}
}
catch (Exception ex)
{
rootPage.NotifyUser(ex.Message, NotifyType.ErrorMessage);
}
OutputProgressRing.IsActive = false;
}
public static async Task <List <StorageFile> > FindChanges()
{
var opr = SQLOperator.Current();
var filePaths = await opr.GetFilePathsAsync();
var foldersDB = await opr.GetAllAsync <FOLDER>();
var folders = FileReader.InitFolderList();
foreach (var f in foldersDB)
{
StorageFolder folder = await f.GetFolderAsync();
if (folders.Exists(a => a.Path == folder.Path))
{
continue;
}
folders.Add(folder);
}
var list = new List <StorageFile>();
foreach (var item in folders)
{
if (item == null)
{
continue;
}
var options = new Windows.Storage.Search.QueryOptions
{
FileTypeFilter = { ".flac", ".wav", ".m4a", ".aac", ".mp3" },
FolderDepth = Windows.Storage.Search.FolderDepth.Deep,
IndexerOption = Windows.Storage.Search.IndexerOption.DoNotUseIndexer,
};
var query = item.CreateFileQueryWithOptions(options);
var files = await query.GetFilesAsync();
list.AddRange(files);
var t = Task.Run(async() => { await opr.UpdateFolderAsync(item, files.Count); });
}
list.Distinct(new StorageFileComparer());
foreach (var path in filePaths)
{
try
{
var file = await StorageFile.GetFileFromPathAsync(path);
if (list.Find(x => x.Path == file.Path) is StorageFile f)
{
list.Remove(f);
}
}
catch (FileNotFoundException)
{
await opr.RemoveSongAsync(path);
}
}
return(list);
}
/// <summary>
/// This is the click handler for all four buttons in this example.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
async private void Default_Click(object sender, RoutedEventArgs e)
{
Button b = sender as Button;
if (b != null)
{
OutputProgressRing.IsActive = true;
// Each visible button was previously set to display a homegroup user's name
string userName = b.Content.ToString();
// This try/catch block is for scenarios where the Homegroup Known Folder is not available.
try
{
System.Collections.Generic.IReadOnlyList <Windows.Storage.StorageFolder> hgFolders = await Windows.Storage.KnownFolders.HomeGroup.GetFoldersAsync();
bool userFound = false;
foreach (Windows.Storage.StorageFolder folder in hgFolders)
{
if (folder.DisplayName == userName)
{
// We've found the folder belonging to the target user; search for all files under it
userFound = true;
Windows.Storage.Search.QueryOptions queryOptions = new Windows.Storage.Search.QueryOptions(Windows.Storage.Search.CommonFileQuery.OrderBySearchRank, null);
queryOptions.UserSearchFilter = "*";
Windows.Storage.Search.StorageFileQueryResult queryResults = folder.CreateFileQueryWithOptions(queryOptions);
System.Collections.Generic.IReadOnlyList <Windows.Storage.StorageFile> files = await queryResults.GetFilesAsync();
if (files.Count > 0)
{
string outputString = (files.Count == 1) ? "One file found\n\n" : files.Count.ToString() + " files found\n\n";
foreach (Windows.Storage.StorageFile file in files)
{
outputString += file.Name + "\n";
}
rootPage.NotifyUser(outputString, NotifyType.StatusMessage);
}
else
{
rootPage.NotifyUser("No files found.", NotifyType.StatusMessage);
}
}
}
if (!userFound)
{
rootPage.NotifyUser("The user " + userName + " was not found on the HomeGroup.", NotifyType.ErrorMessage);
}
}
catch (Exception ex)
{
rootPage.NotifyUser(ex.Message, NotifyType.ErrorMessage);
}
OutputProgressRing.IsActive = false;
}
}
/// <summary>
/// This function retrieves all items added to the index through the app's appcontent-ms files which
/// have an ItemNameDisplay property containing "Sample 1"
/// </summary>
private void RetrieveMatchedItems_Click(object sender, RoutedEventArgs e)
{
var queryOptions = new Windows.Storage.Search.QueryOptions();
// Include only items returned via the index in the search results
queryOptions.IndexerOption = Windows.Storage.Search.IndexerOption.OnlyUseIndexer;
// Create an AQS (Advanced Query Syntax) query which will look for ItemNameDisplay properties which contain "Sample 1"
queryOptions.ApplicationSearchFilter = Windows.Storage.SystemProperties.ItemNameDisplay + ":\"Sample 1\"";
RetrieveAppContentHelper(folder => folder.CreateFileQueryWithOptions(queryOptions));
}
/// <summary>
/// This function retrieves all items added to the index through the app's appcontent-ms files which
/// have an ItemNameDisplay property containing "Sample 1"
/// </summary>
private void RetrieveMatchedItems_Click(object sender, RoutedEventArgs e)
{
var queryOptions = new Windows.Storage.Search.QueryOptions();
// Include only items returned via the index in the search results
queryOptions.IndexerOption = Windows.Storage.Search.IndexerOption.OnlyUseIndexer;
// Create an AQS (Advanced Query Syntax) query which will look for ItemNameDisplay properties which contain "Sample 1"
queryOptions.ApplicationSearchFilter = Windows.Storage.SystemProperties.ItemNameDisplay + ":\"Sample 1\"";
RetrieveAppContentHelper(folder => folder.CreateFileQueryWithOptions(queryOptions));
}
public async Task <IReadOnlyList <StorageFile> > SearchFolder()
{
var options = new Windows.Storage.Search.QueryOptions
{
FileTypeFilter = { ".flac", ".wav", ".m4a", ".aac", ".mp3", ".wma" },
FolderDepth = Windows.Storage.Search.FolderDepth.Deep,
IndexerOption = Windows.Storage.Search.IndexerOption.DoNotUseIndexer,
};
var query = Folder.CreateFileQueryWithOptions(options);
query.ContentsChanged += QueryContentsChanged;
return(await query.GetFilesAsync());
}
public static async Task <string> GetBuiltInArtworkAsync(string id, string name, StorageFile file)
{
if (id == "0")
{
id = CreateHash64(name).ToString();
}
var options = new Windows.Storage.Search.QueryOptions(Windows.Storage.Search.CommonFileQuery.DefaultQuery, new string[] { ".jpg", ".png", ".bmp" })
{
ApplicationSearchFilter = $"System.FileName:{id}.*"
};
var query = ApplicationData.Current.TemporaryFolder.CreateFileQueryWithOptions(options);
var files = await query.GetFilesAsync();
if (files.Count > 0)
{
return(files[0].Path);
}
else
{
using (var tag = TagLib.File.Create(file))
{
var pictures = tag.Tag.Pictures;
if (!pictures.IsNullorEmpty())
{
var fileName = $"{id}.{pictures[0].MimeType.Split('/').LastOrDefault().Replace("jpeg", "jpg")}";
var s = await ApplicationData.Current.TemporaryFolder.TryGetItemAsync(fileName);
if (s == null)
{
var cacheImg = await ApplicationData.Current.TemporaryFolder.CreateFileAsync(fileName, CreationCollisionOption.ReplaceExisting);
await FileIO.WriteBytesAsync(cacheImg, pictures[0].Data.Data);
return(cacheImg.Path);
}
else
{
return(s.Path);
}
}
else
{
return(string.Empty);
}
}
}
}
public static async Task <ulong> FolderSize(this StorageFolder folder)
{
var options = new Windows.Storage.Search.QueryOptions
{
FolderDepth = Windows.Storage.Search.FolderDepth.Deep,
};
var query = folder.CreateFileQueryWithOptions(options);
var files = await query.GetFilesAsync();
ulong si = 0ul;
foreach (var file in files)
{
si += (await file.GetBasicPropertiesAsync()).Size;
}
return(si);
}
/// <summary>
/// returns a list of filenames for the
/// specified directory.
/// </summary>
/// <param name="directoryPath"></param>
/// <returns></returns>
public async Task <List <string> > GetFileNames(string directoryPath, string pattern)
{
List <string> listFile = new List <string>();
List <string> fileTypeFilter = new List <string>();
fileTypeFilter.Add(pattern);
Windows.Storage.Search.QueryOptions queryOptions = new Windows.Storage.Search.QueryOptions(Windows.Storage.Search.CommonFileQuery.OrderBySearchRank, fileTypeFilter);
queryOptions.UserSearchFilter = directoryPath;
var fileQuery = applicationData.LocalFolder.CreateFileQueryWithOptions(queryOptions);
var list = await fileQuery.GetFilesAsync();
if (list != null)
{
foreach (var file in list)
{
listFile.Add(file.Path);
}
}
return(listFile);
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
var library = Windows.Storage.KnownFolders.PicturesLibrary;
var queryOptions = new Windows.Storage.Search.QueryOptions();
queryOptions.FolderDepth = Windows.Storage.Search.FolderDepth.Deep;
queryOptions.IndexerOption = Windows.Storage.Search.IndexerOption.UseIndexerWhenAvailable;
var fileQuery = library.CreateFileQueryWithOptions(queryOptions);
var fif = new Windows.Storage.BulkAccess.FileInformationFactory(
fileQuery,
Windows.Storage.FileProperties.ThumbnailMode.PicturesView,
190,
Windows.Storage.FileProperties.ThumbnailOptions.UseCurrentScale,
false
);
var dataSource = fif.GetVirtualizedFilesVector();
this.PicturesListView.ItemsSource = dataSource;
}
/* 显示文件夹下视频的辅助函数 */
private async void showVideoInFolder(string token)
{
var folder = await Windows.Storage.AccessCache.StorageApplicationPermissions.FutureAccessList.GetFolderAsync(token);
if (folder != null)
{
var foldersQuery = folder.CreateFolderQuery();
var filesQuery = new Windows.Storage.Search.QueryOptions();
filesQuery.FileTypeFilter.Add(".mp4");
filesQuery.FileTypeFilter.Add(".wma");
filesQuery.FileTypeFilter.Add(".avi");
var query = folder.CreateFileQueryWithOptions(filesQuery);
var files = await query.GetFilesAsync();
foreach (var file in files)
{
//bitmapImage.SetSource(randomAccessStream);
BitmapImage bitmapImage = await Common.GetThumbnailOfVideo(file);
Video temp = await viewModel.Search(file.Path);
string videoToken;
string date = DateTimeOffset.Now.Year.ToString() + "/" + DateTimeOffset.Now.Month.ToString() + "/" + DateTimeOffset.Now.Day.ToString();
if (temp == null)
{
videoToken = Windows.Storage.AccessCache.StorageApplicationPermissions.FutureAccessList.Add(file);
videos.Add(new Video(videoToken, file.Name, date, "", 0, 0, 0, 0, file.Path, bitmapImage));
}
else
{
temp.Date = date;
videos.Add(temp);
}
}
}
}
private async Task <int> GetNumInFolder(StorageFolder folder)
{
int total = 0;
var foldersQuery = folder.CreateFolderQuery();
var listOfFolders = await foldersQuery.GetFoldersAsync();
total += listOfFolders.Count;
// get the num of folders
// find mp4, wma, avi vedios
var filesQueryOptions = new Windows.Storage.Search.QueryOptions();
filesQueryOptions.FileTypeFilter.Add(".mp4");
filesQueryOptions.FileTypeFilter.Add(".wma");
filesQueryOptions.FileTypeFilter.Add(".avi");
var listOfVideos = await folder.CreateFileQueryWithOptions(filesQueryOptions).GetFilesAsync();
total += listOfVideos.Count;
// get the num of videos
return(total);
}
public async void GetPicture()
{
StorageFile fileLocal = await StorageFile.GetFileFromApplicationUriAsync(new Uri("ms-appdata:///local/account/" + ImageHelper.folderStr + ".json"));
if (fileLocal != null)
{
try
{
//读取本地文件内容，并且反序列化
using (IRandomAccessStream readStream = await fileLocal.OpenAsync(FileAccessMode.Read))
{
using (DataReader dataReader = new DataReader(readStream))
{
UInt64 size = readStream.Size;
if (size <= UInt32.MaxValue)
{
await dataReader.LoadAsync(sizeof(Int32));
Int32 stringSize = dataReader.ReadInt32();
await dataReader.LoadAsync((UInt32)stringSize);
string fileContent = dataReader.ReadString((uint)stringSize);
ImagePath imagePath = new ImagePath(fileContent);
StorageFolder folder = await StorageApplicationPermissions.FutureAccessList.GetFolderAsync(imagePath.Path);
//筛选图片
var queryOptions = new Windows.Storage.Search.QueryOptions();
queryOptions.FileTypeFilter.Add(".png");
queryOptions.FileTypeFilter.Add(".jpg");
queryOptions.FileTypeFilter.Add(".bmp");
var query = folder.CreateFileQueryWithOptions(queryOptions);
var files = await query.GetFilesAsync();
ImagePath img;
var imgList = new ObservableCollection <ImagePath>();
foreach (var item in files)
{
IRandomAccessStream irandom = await item.OpenAsync(FileAccessMode.Read);
//对图像源使用流源
BitmapImage bitmapImage = new BitmapImage();
bitmapImage.DecodePixelWidth = 160;
bitmapImage.DecodePixelHeight = 100;
await bitmapImage.SetSourceAsync(irandom);
img = new ImagePath();
img.Path = item.Path;
img.File = bitmapImage;
img.Storage = item;
imgList.Add(img);
}
//imageView.ItemsSource = imgList;
}
}
}
}
catch (Exception exce)
{
await new MessageDialog(exce.ToString()).ShowAsync();
throw exce;
}
}
}
//update VOC CF
private async void UpdateCF(string Name)
{
try
{
string methodFileName = methodtrans[Name];
//Create a folder: fileFloder dir calibrate -->methodFileName -->dateTimeFileName
StorageFolder applicationFolder = ApplicationData.Current.LocalFolder;
StorageFolder retentionFolder = await applicationFolder.CreateFolderAsync("calibrate_test",
CreationCollisionOption.OpenIfExists);
StorageFolder pdfFolder = await retentionFolder.CreateFolderAsync(methodFileName,
CreationCollisionOption.OpenIfExists);
//Query the file
List <string> fileTypeFilter = new List <string>();
fileTypeFilter.Add(".dat");
var queryOptions = new Windows.Storage.Search.QueryOptions(Windows.Storage.Search.CommonFileQuery.OrderByName, fileTypeFilter);
// Create query and retrieve files
var query = pdfFolder.CreateFileQueryWithOptions(queryOptions);
IReadOnlyList <StorageFile> fileList = await query.GetFilesAsync();
// Process results
long maxvalue = 0;
foreach (StorageFile file in fileList)
{
// Process file
Debug.WriteLine(file.Name);
if (long.Parse(file.Name.Split('.')[0]) > maxvalue)
{
maxvalue = long.Parse(file.Name.Split('.')[0]);
}
}
Debug.WriteLine(maxvalue);
//Get the latest file
string latestFilename = maxvalue.ToString() + ".dat";
StorageFile latestFile = await pdfFolder.GetFileAsync(latestFilename);
if (latestFile != null)
{
Debug.WriteLine("Update file found");
}
IBuffer buffer = await FileIO.ReadBufferAsync(latestFile);
DataReader reader = DataReader.FromBuffer(buffer);
byte[] fileContent = new byte[reader.UnconsumedBufferLength];
reader.ReadBytes(fileContent);
string text = GetEncoding(new byte[4] {
fileContent[0], fileContent[1], fileContent[2], fileContent[3]
}).GetString(fileContent);
String[] result = text.Split(new[] { '|' });
if (result.Length == VOCLibraryList.Count)
{
newinfo = new string[result.Length + 1, 2];
for (int i = 0; i < result.Length; i++)
{
for (int j = 0; j < 2; j++)
{
string[] newline = result[i].Split(new[] { ':' });
newinfo[i, j] = newline[j];
}
}
newinfo[result.Length, 0] = "datetime";
newinfo[result.Length, 1] = maxvalue.ToString();
}
if (newinfo.Length > 0)
{
for (var index = 0; index < VOCLibraryList.Count; index++)
{
VOCLibraryList[index].CalibrateDate = newinfo[VOCLibraryList.Count, 1];
//info.ConcentrationFactor = json.GetNamedNumber("CalibrationFactor").ToString();
VOCLibraryList[index].ConcentrationFactor = newinfo[index, 1];
//if (!json.GetNamedArray("VOCRetentionTime")[0].ToString().Equals("null"))
//{
// VOCLibraryList[index].Time = json.GetNamedArray("VOCRetentionTime")[index].GetNumber().ToString();
//}
//else
//{
// VOCLibraryList[index].Time = "--";
//}
}
}
}
catch (FileNotFoundException)
{
Debug.WriteLine("Update file not found");
}
//update CF
}
//update retention
private async void UpdateRentention(string name)
{
try
{
RetentionTimeList = new List <double>();
string methodFileName = methodtrans[name];
//Create a folder: fileFloder dir calibrate -->methodFileName -->dateTimeFileName
StorageFolder applicationFolder = ApplicationData.Current.LocalFolder;
StorageFolder retentionFolder = await applicationFolder.CreateFolderAsync("Retention_update",
CreationCollisionOption.OpenIfExists);
StorageFolder pdfFolder = await retentionFolder.CreateFolderAsync(methodFileName,
CreationCollisionOption.OpenIfExists);
//Query the file
List <string> fileTypeFilter = new List <string>();
fileTypeFilter.Add(".dat");
var queryOptions = new Windows.Storage.Search.QueryOptions(Windows.Storage.Search.CommonFileQuery.OrderByName, fileTypeFilter);
// Create query and retrieve files
var query = pdfFolder.CreateFileQueryWithOptions(queryOptions);
IReadOnlyList <StorageFile> fileList = await query.GetFilesAsync();
// Process results
long maxvalue = 0;
foreach (StorageFile file in fileList)
{
// Process file
Debug.WriteLine(file.Name);
if (long.Parse(file.Name.Split('.')[0]) > maxvalue)
{
maxvalue = long.Parse(file.Name.Split('.')[0]);
}
}
Debug.WriteLine(maxvalue);
//Get the latest file
string latestFilename = maxvalue.ToString() + ".dat";
StorageFile latestFile = await pdfFolder.GetFileAsync(latestFilename);
if (latestFile != null)
{
Debug.WriteLine("Update file found");
}
IBuffer buffer = await FileIO.ReadBufferAsync(latestFile);
DataReader reader = DataReader.FromBuffer(buffer);
byte[] fileContent = new byte[reader.UnconsumedBufferLength];
reader.ReadBytes(fileContent);
string text = GetEncoding(new byte[4] {
fileContent[0], fileContent[1], fileContent[2], fileContent[3]
}).GetString(fileContent);
String[] result = text.Split(new[] { ',' });
for (int i = 0; i < result.Length; i++)
{
RetentionTimeList.Add(double.Parse(result[i]));
Debug.WriteLine(result[i]);
}
for (var index = 0; index < RetentionTimeList.Count; index++)
{
VOCLibraryList[index].Time = RetentionTimeList[index].ToString("0.00");
}
}
catch (FileNotFoundException)
{
Debug.WriteLine("Update file not found");
}
}
/// <summary>
/// This is the click handler for all four buttons in this example.
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
async private void Default_Click(object sender, RoutedEventArgs e)
{
Button b = sender as Button;
if (b != null)
{
OutputProgressRing.IsActive = true;
// Each visible button was previously set to display a homegroup user's name
string userName = b.Content.ToString();
// This try/catch block is for scenarios where the Homegroup Known Folder is not available.
try
{
System.Collections.Generic.IReadOnlyList<Windows.Storage.StorageFolder> hgFolders = await Windows.Storage.KnownFolders.HomeGroup.GetFoldersAsync();
bool userFound = false;
foreach (Windows.Storage.StorageFolder folder in hgFolders)
{
if (folder.DisplayName == userName)
{
// We've found the folder belonging to the target user; search for all files under it
userFound = true;
Windows.Storage.Search.QueryOptions queryOptions = new Windows.Storage.Search.QueryOptions(Windows.Storage.Search.CommonFileQuery.OrderBySearchRank, null);
queryOptions.UserSearchFilter = "*";
Windows.Storage.Search.StorageFileQueryResult queryResults = folder.CreateFileQueryWithOptions(queryOptions);
System.Collections.Generic.IReadOnlyList<Windows.Storage.StorageFile> files = await queryResults.GetFilesAsync();
if (files.Count > 0)
{
string outputString = (files.Count == 1) ? "One file found\n\n" : files.Count.ToString() + " files found\n\n";
foreach (Windows.Storage.StorageFile file in files)
{
outputString += file.Name + "\n";
}
rootPage.NotifyUser(outputString, NotifyType.StatusMessage);
}
else
{
rootPage.NotifyUser("No files found.", NotifyType.StatusMessage);
}
}
}
if (!userFound)
{
rootPage.NotifyUser("The user " + userName + " was not found on the HomeGroup.", NotifyType.ErrorMessage);
}
}
catch (Exception ex)
{
rootPage.NotifyUser(ex.Message, NotifyType.ErrorMessage);
}
OutputProgressRing.IsActive = false;
}
}
/// <summary>
/// returns a list of filenames for the
/// specified directory.
/// </summary>
/// <param name="directoryPath"></param>
/// <returns></returns>
public async Task<List<string>> GetFileNames(string directoryPath, string pattern)
{
List<string> listFile = new List<string>();
List<string> fileTypeFilter = new List<string>();
fileTypeFilter.Add(pattern);
Windows.Storage.Search.QueryOptions queryOptions = new Windows.Storage.Search.QueryOptions(Windows.Storage.Search.CommonFileQuery.OrderBySearchRank, fileTypeFilter);
queryOptions.UserSearchFilter = directoryPath;
var fileQuery = applicationData.LocalFolder.CreateFileQueryWithOptions(queryOptions);
var list = await fileQuery.GetFilesAsync();
if (list != null)
foreach (var file in list)
listFile.Add(file.Path);
return listFile;
}
/// <summary>
/// 重载函数处理传入参数
/// </summary>
/// <param name="e">Folder类型，为即将显示的界面的根目录</param>
protected async override void OnNavigatedTo(NavigationEventArgs e)
{
//SystemNavigationManager.GetForCurrentView().AppViewBackButtonVisibility = Frame.CanGoBack ?
// AppViewBackButtonVisibility.Visible : Windows.UI.Core.AppViewBackButtonVisibility.Collapsed;
//base.OnNavigatedTo(e);
MainStackPanel.Visibility = Visibility.Collapsed;
EmptyFolderText.Visibility = Visibility.Visible;
viewModel = FolderViewModel.GetInstance();
// 就是currentFolder = e.parameter as folder 然后判断一下不为null
if (e.Parameter is Folder currentFolder)
{
currentRootFolder = currentFolder;
try
{
folders.Clear();
bool wheatherShowEmpty = true;
var folder = await Windows.Storage.AccessCache.StorageApplicationPermissions.FutureAccessList.GetFolderAsync(currentRootFolder.Token);
if (folder != null)
{
var foldersQuery = folder.CreateFolderQuery();
foreach (var eachfolder in await foldersQuery.GetFoldersAsync())
{
wheatherShowEmpty = false;
string token = Windows.Storage.AccessCache.StorageApplicationPermissions.FutureAccessList.Add(eachfolder);
folders.Add(new Folder(token, eachfolder.Name, await GetNumInFolder(eachfolder)));
}
var filesQuery = new Windows.Storage.Search.QueryOptions();
filesQuery.FileTypeFilter.Add(".mp4");
filesQuery.FileTypeFilter.Add(".wma");
filesQuery.FileTypeFilter.Add(".avi");
var query = folder.CreateFileQueryWithOptions(filesQuery);
var files = await query.GetFilesAsync();
foreach (var file in files)
{
BitmapImage bitmapImage = await Common.GetThumbnailOfVideo(file);
wheatherShowEmpty = false;
Video temp = await viewModel.Search(file.Path);
string videoToken;
string date = DateTimeOffset.Now.Year.ToString() + "/" + DateTimeOffset.Now.Month.ToString() + "/" + DateTimeOffset.Now.Day.ToString();
if (temp == null)
{
videoToken = Windows.Storage.AccessCache.StorageApplicationPermissions.FutureAccessList.Add(file);
videos.Add(new Video(videoToken, file.Name, date, "", 0, 0, 0, 0, file.Path, bitmapImage));
}
else
{
temp.Date = date;
videos.Add(temp);
}
}
}
if (!wheatherShowEmpty)
{
MainStackPanel.Visibility = Visibility.Visible;
EmptyFolderText.Visibility = Visibility.Collapsed;
}
}
catch (Exception)
{
await new MessageDialog("Path is not valid").ShowAsync();
}
}
}
