protected override void OnContentChanged()
        {
            base.OnContentChanged();

            if (Content == null)
            {
                panel.Controls.Clear();
            }
            else if (Content.GetType() == contentType && view != null)
            {
                view.Content = Content;
            }
            else
            {
                view        = null;
                contentType = Content.GetType();
                panel.Controls.Clear();
                var viewType = MainFormManager.GetViewTypes(Content.GetType(), true).FirstOrDefault(t => typeof(DataAnalysisSolutionView).IsAssignableFrom(t));
                if (viewType != null)
                {
                    view          = (DataAnalysisSolutionView)MainFormManager.CreateView(viewType);
                    view.Locked   = Locked;
                    view.ReadOnly = ReadOnly;
                    view.Dock     = DockStyle.Fill;
                    view.Content  = Content;
                    panel.Controls.Add(view);
                }
            }
        }
    protected override void OnContentChanged() {
      base.OnContentChanged();

      if (Content == null) {
        panel.Controls.Clear();
      } else if (Content.GetType() == contentType && view != null) {
        view.Content = Content;
      } else {
        view = null;
        contentType = Content.GetType();
        panel.Controls.Clear();
        var viewType = MainFormManager.GetViewTypes(Content.GetType(), true).FirstOrDefault(t => typeof(DataAnalysisSolutionView).IsAssignableFrom(t));
        if (viewType != null) {
          view = (DataAnalysisSolutionView)MainFormManager.CreateView(viewType);
          view.Locked = Locked;
          view.ReadOnly = ReadOnly;
          view.Dock = DockStyle.Fill;
          view.Content = Content;
          panel.Controls.Add(view);
        }
      }
    }