public class SqlObjectExplorerController : ToolController, ISqlObjectExplorerController
{
    private ISqlObjectExplorerView view = null;
    private SqlServerStructureProvider structureProvider;
    private IProgress<IProgressInfo> progress;

    public SqlObjectExplorerController(ISqlObjectExplorerView view)
    {
        if (view == null)
            throw new ArgumentNullException("view");

        this.view = view;
        InitializeEventHandlers();
        ...
    }

    private void InitializeEventHandlers()
    {
        (view as ToolView).Initialize += new EventHandler(async (s, e) => await RefreshObjectExplorerAsync());
        view.OnRefreshObjectExplorerClicked += new EventHandler(async (s, e) => await RefreshObjectExplorerAsync());
        view.OnAddServerInstanceClicked += new EventHandler(async (s, e) => await AddServerInstanceAsync());
        view.OnNewSqlQueryClicked += new EventHandler<NewSqlQueryRequestEventArgs>((s, e) => OpenNewSqlQueryDocument(e));
        view.OnExpandRequested += new EventHandler<BeforeExpandEventArgs>((s, e) => BuildSubStructureForDatabaseNode(e));
    }

    private async Task RefreshObjectExplorerAsync()
    {
        await InitializeObjectExplorerAsync();
        view.InitializeObjectExplorer(ServerCache);
    }

    ... // Lots more code.