void SetActiveWorkspace(WorkspaceViewModel workspace)
{
System.Diagnostics.Debug.Assert(this.Workspaces.Contains(workspace));
ICollectionView collectionView = CollectionViewSource.GetDefaultView(this.Workspaces);
if (collectionView != null)
collectionView.MoveCurrentTo(workspace);
SelectedWorkspace = workspace;
}
void ShowWorkspace()
{
var workspaceVm = new WorkspaceViewModel(AuthKey);
this.SetActiveView(workspaceVm);
}