/// <summary>
/// Initializes a new instance of the <see cref="SelectProjectsViewModel" /> class.
/// </summary>
/// <param name="visualStudio">The visual studio.</param>
/// <param name="existingProjects">The existing projects.</param>
/// <exception cref="ArgumentNullException">The <paramref name="visualStudio" /> is <c>null</c>.</exception>
/// <exception cref="ArgumentNullException">The <paramref name="visualStudio" /> is <c>null</c>.</exception>
public SelectProjectsViewModel(DTE2 visualStudio, IEnumerable<Project> existingProjects)
{
Argument.IsNotNull("visualStudio", visualStudio);
Argument.IsNotNull("existingProjects", existingProjects);
_visualStudio = visualStudio;
AvailableProjects = new List<Project>(existingProjects);
_selectableProjects = AvailableProjects.Select(x => new ProjectSelection(x)).ToList();
SelectableProjects = new ObservableCollection<ProjectSelection>();
RootProject = _visualStudio.GetActiveProject();
}