chakkaradeep

var discoveryCapabilitiesResult = await discoveryClient.DiscoverCapabilitiesAsync();
foreach(var serviceCapability in discoveryCapabilitiesResult)
{
  txtBoxStatus.Text += String.Format(discoveryResultText,
  serviceCapability.Key,
  serviceCapability.Value.ServiceEndpointUri.ToString(),
  serviceCapability.Value.ServiceResourceId).Replace("\n", Environment.NewLine);
}

chakkaradeep

var discoveryClient = new DiscoveryClient(DiscoveryServiceEndpointUri,
  async () =>
  {
    var authResult = await GetAccessTokenAsync(DiscoveryServiceResourceId);

    userId = authResult.UserInfo.UniqueId;

    return authResult.AccessToken;
  });

chakkaradeep

async void GetContacts()
{
    DiscoveryClient discoveryClient = new DiscoveryClient(discoveryServiceEndpointUri,
        () =>
        {
            var authResult = authContext.AcquireTokenSilentSync(discoveryServiceResourceId, ClientId, AadUserInfo.UserId);

            return authResult.AccessToken;
        });

chakkaradeep

public static async Task Delete(string strFileId)
{
    var file = await _spFilesClient.Files.GetById(strFileId).ToFile().ExecuteAsync();

    await file.DeleteAsync();
}        

chakkaradeep

public static async Task UpdateFileContent(string strFileId, Stream stremFileContent)
{
    var file = (IFileFetcher)(await _spFilesClient.Files.GetById(strFileId).ToFile().ExecuteAsync());

    await file.UploadAsync(stremFileContent);
}

chakkaradeep

public static async Task Update(MyFile myFile, Stream streamFileContent)
{
    var file = await _spFilesClient.Files.GetById(myFile.Id).ToFile().ExecuteAsync();

    file.Name = myFile.Name;

    await file.UpdateAsync();           
}

chakkaradeep

public static async Task<MyFile> Create(string strFileName, Stream streamFileContent)
{
    //MyFile is the business object
    MyFile myFile = null;

    //add the file to OneDrive
    //file name will be the full file name along with the extension
    IFile file = await _spFilesClient.Files.AddAsync(strFileName, true, streamFileContent);

    if (file != null)

chakkaradeep

public static async Task<Stream> GetFileContent(string strFileId)
{
    var file = (IFileFetcher)(await _spFilesClient.Files.GetById(strFileId).ToFile().ExecuteAsync());

    var streamFileContent = await file.DownloadAsync();

    streamFileContent.Seek(0, System.IO.SeekOrigin.Begin);

    return streamFileContent;
}

chakkaradeep

public static async Task<ObservableCollection<MyFile>> GetMyFiles(string strFolderName)
{
    //MyFile is the business object
    ObservableCollection<MyFile> myFilesList = new ObservableCollection<MyFile>();

    //get the files from the folder
    var filesResults = await _spFilesClient.Files[strFolderName].ToFolder().Children.ExecuteAsync();

    //get the results from current page
    var files = filesResults.CurrentPage.OfType<Microsoft.Office365.SharePoint.File>().ToList();

chakkaradeep

public static async Task<ObservableCollection<MyFile>> GetMyFiles()
{
    ObservableCollection<MyFile> myFilesList = new ObservableCollection<MyFile>();

    var filesResults = await _spFilesClient.Files.ExecuteAsync();

    var files = filesResults.CurrentPage.OfType<Microsoft.Office365.SharePoint.File>().ToList();

    foreach (var file in files)
    {