public LoginViewModel()
{
_userCredentials = new UserCredentials();
this.LoginCommand = new Command(async() => {
AppData.Credentials = _userCredentials;
var authenticated = await SitecoreHelper.Authenticate();
if (authenticated)
{
App.Current.MainPage = new NavigationPage(
ViewFactory.CreatePageFromViewModel(new WorkboxViewModel()));
}
;
}, () => !string.IsNullOrEmpty(_userCredentials.InstanceUrl) &&
!string.IsNullOrEmpty(_userCredentials.Username) &&
!string.IsNullOrEmpty(_userCredentials.Password));
}