/// <summary>
/// Signs in the current user.
/// </summary>
/// <returns></returns>
public async Task SignInCurrentUserAsync()
{
_currentUser = await _userOperations.AuthenticateCurrentUserAsync();
if (_currentUser != null)
{
this.DisplayName = _currentUser.DisplayName;
this.JobTitle = _currentUser.JobTitle;
this.Avatar = await _userOperations.GetUserThumbnailPhotoAsync(_currentUser);
this.LogOnCaption = "Disconnect from Office 365";
this.Id = _currentUser.ObjectId;
this._mailAddress = _currentUser.Mail;
this.SignedIn = true;
}
}