private async Task NavigateBackAsync()
{
if (_graphCurrentFolder != null)
{
OneDriveStorageFolder currentFolder = null;
SampleController.Current.DisplayWaitRing = true;
try
{
if (!string.IsNullOrEmpty(_graphCurrentFolder.Path))
{
currentFolder = await _graphRootFolder.GetFolderAsync(_graphCurrentFolder.Path);
}
else
{
currentFolder = _graphRootFolder;
}
OneDriveItemsList.ItemsSource = currentFolder.GetItemsAsync(10);
_graphCurrentFolder = currentFolder;
}
catch (ServiceException ex)
{
await OneDriveSampleHelpers.DisplayOneDriveServiceExceptionAsync(ex);
}
finally
{
SampleController.Current.DisplayWaitRing = false;
}
}
}
private async Task NavigateBackAsync()
{
if (_currentFolder != null)
{
OneDriveStorageFolder currentFolder = null;
progressRing.IsActive = true;
try
{
if (!string.IsNullOrEmpty(_currentFolder.Path))
{
currentFolder = await _rootFolder.GetFolderAsync(_currentFolder.Path);
}
else
{
currentFolder = _rootFolder;
}
LstFolder.ItemsSource = await currentFolder.GetFoldersAsync(100);
_currentFolder = currentFolder;
}
catch (ServiceException ex)
{
await OneDriveSampleHelpers.DisplayOneDriveServiceExceptionAsync(ex);
}
finally
{
progressRing.IsActive = false;
}
}
}
public static async Task <OneDriveStorageFile> GetOneDriveFilesAsync(string fileName)
{
if (rootFolder is null)
{
if (!await LogintoOnedriveAsync())
{
throw new InvalidOperationException("Failed to log in");
}
if (rootFolder is null)
{
var root = await OneDriveService.Instance.AppRootFolderAsync();
Interlocked.CompareExchange(ref rootFolder, root, null);
}
}
fileName = fileName.Split(@"\OneDrive\", 2).Last();
var folderName = SysPath.GetDirectoryName(fileName);
var sFileName = SysPath.GetFileName(fileName);
if (folderName.IsNullorEmpty())
{
return(await rootFolder.GetFileAsync(fileName));
}
var file = default(OneDriveStorageFile);
// copy to local to avoid changes by other threads
var currentCache = cache;
if (currentCache != null && folderName == currentCache.FolderName)
{
file = currentCache.Files.Find(f => f.Name == sFileName);
}
if (file != null)
{
return(file);
}
// cache miss
var folder = await rootFolder.GetFolderAsync(folderName);
var files = await folder.GetFilesAsync(10000);
file = files.Find(f => f.Name == sFileName);
cache = new CacheData
{
Files = files,
Folder = folder,
FolderName = folderName,
};
if (file != null)
{
return(file);
}
// slow route: first 10000 files missed
return(await folder.GetFileAsync(sFileName));
}
private async Task NavigateToFolderAsync(Toolkit.Uwp.Services.OneDrive.OneDriveStorageItem item)
{
if (item.IsFolder())
{
Shell.Current.DisplayWaitRing = true;
try
{
var currentFolder = await _currentFolder.GetFolderAsync(item.Name);
OneDriveItemsList.ItemsSource = currentFolder.GetItemsAsync();
_currentFolder = currentFolder;
}
catch (ServiceException ex)
{
await OneDriveSampleHelpers.DisplayOneDriveServiceExceptionAsync(ex);
}
finally
{
Shell.Current.DisplayWaitRing = false;
}
}
}
private async Task NavigateToFolderAsync(OneDriveStorageItem item)
{
if (item.IsFolder())
{
SampleController.Current.DisplayWaitRing = true;
try
{
var currentFolder = await _graphCurrentFolder.GetFolderAsync(item.Name);
OneDriveItemsList.ItemsSource = await currentFolder.GetItemsAsync(20);
_graphCurrentFolder = currentFolder;
}
catch (ServiceException ex)
{
await OneDriveSampleHelpers.DisplayOneDriveServiceExceptionAsync(ex);
}
finally
{
SampleController.Current.DisplayWaitRing = false;
}
}
}
private async Task NavigateToFolderAsync(OneDriveStorageItem item)
{
progressRing.IsActive = true;
try
{
var currentFolder = await _graphCurrentFolder.GetFolderAsync(item.Name);
var items = await currentFolder.GetFoldersAsync(100);
if (items.Count > 0)
{
LstFolder.ItemsSource = items;
_graphCurrentFolder = currentFolder;
}
}
catch (ServiceException ex)
{
await OneDriveSampleHelpers.DisplayOneDriveServiceExceptionAsync(ex);
}
finally
{
progressRing.IsActive = false;
}
}