private async Task NavigateBackAsync()
{
if (_currentFolder != null)
{
Services.OneDrive.OneDriveStorageFolder currentFolder = null;
Shell.Current.DisplayWaitRing = true;
try
{
if (!string.IsNullOrEmpty(_currentFolder.Path))
{
currentFolder = await _rootFolder.GetFolderAsync(_currentFolder.Path);
}
else
{
currentFolder = _rootFolder;
}
OneDriveItemsList.ItemsSource = currentFolder.GetItemsAsync();
_currentFolder = currentFolder;
}
catch (ServiceException ex)
{
await OneDriveSampleHelpers.DisplayOneDriveServiceExceptionAsync(ex);
}
finally
{
Shell.Current.DisplayWaitRing = false;
}
}
}
/// <summary>
/// Upload large file.
/// </summary>
/// <param name="folder">The destination folder</param>
/// <returns>Task to support await of async call.</returns>
public static async Task UploadLargeFileAsync(Services.OneDrive.OneDriveStorageFolder folder)
{
try
{
if (folder != null)
{
var selectedFile = await OpenLocalFileAsync();
if (selectedFile != null)
{
using (var localStream = await selectedFile.OpenReadAsync())
{
Shell.Current.DisplayWaitRing = true;
// If the file exceed the Maximum size (ie 4MB)
var largeFileCreated = await folder.UploadFileAsync(selectedFile.Name, localStream, CreationCollisionOption.GenerateUniqueName, 320 * 1024);
}
}
}
}
catch (OperationCanceledException ex)
{
await OneDriveSampleHelpers.DisplayMessageAsync(ex.Message);
}
catch (ServiceException graphEx)
{
await OneDriveSampleHelpers.DisplayMessageAsync(graphEx.Error.Message);
}
catch (Exception ex)
{
await OneDriveSampleHelpers.DisplayMessageAsync(ex.Message);
TrackingManager.TrackException(ex);
}
finally
{
Shell.Current.DisplayWaitRing = false;
}
}
/// <summary>
/// Create a new folder in the current folder
/// </summary>
/// <param name="folder">Destination folder where to create the new folder</param>
/// <returns>Task to support await of async call.</returns>
public static async Task NewFolderAsync(Services.OneDrive.OneDriveStorageFolder folder)
{
if (folder != null)
{
Shell.Current.DisplayWaitRing = true;
try
{
string newFolderName = await OneDriveSampleHelpers.InputTextDialogAsync("New Folder Name");
if (!string.IsNullOrEmpty(newFolderName))
{
await folder.CreateFolderAsync(newFolderName);
}
}
catch (ServiceException ex)
{
await OneDriveSampleHelpers.DisplayOneDriveServiceExceptionAsync(ex);
}
finally
{
Shell.Current.DisplayWaitRing = false;
}
}
}
public static async Task <Services.OneDrive.OneDriveStorageFolder> OpenFolderPicker(string title, Services.OneDrive.OneDriveStorageFolder rootFolder)
{
FoldersPickerControl folderPicker = new FoldersPickerControl(await rootFolder.GetFoldersAsync(100), rootFolder);
ContentDialog dialog = new ContentDialog
{
Content = folderPicker,
Title = title,
PrimaryButtonText = "Ok"
};
if (await dialog.ShowAsync() == ContentDialogResult.Primary)
{
return(folderPicker.SelectedFolder);
}
else
{
return(null);
}
}
public static async Task MoveToAsync(Services.OneDrive.OneDriveStorageItem item, Services.OneDrive.OneDriveStorageFolder rootFolder)
{
Shell.Current.DisplayWaitRing = true;
try
{
var folder = await OneDriveSampleHelpers.OpenFolderPicker("Move to", rootFolder);
if (folder != null)
{
await item.MoveAsync(folder);
}
}
catch (ServiceException exService)
{
await OneDriveSampleHelpers.DisplayOneDriveServiceExceptionAsync(exService);
}
catch (Exception ex)
{
await OneDriveSampleHelpers.DisplayMessageAsync(ex.Message);
TrackingManager.TrackException(ex);
}
finally
{
Shell.Current.DisplayWaitRing = false;
}
}
