protected virtual void OnAssemblyListTreeCursorChanged(object sender, System.EventArgs e)
 {
     TypeTree.ItemsDataSource = (AssemblyListTree.CurrentSelection.FinalTarget as AssemblyDescription).DevelopmentInformation;
     if (TypeTree.ItemsDataSource != null)
     {
         TypeTree.ExpandAll();
     }
     InfoTree.ItemsDataSource = (AssemblyListTree.CurrentSelection.FinalTarget as AssemblyDescription).DevelopmentInformation.DevelopmentDescriptions;
     if (InfoTree.ItemsDataSource != null)
     {
         InfoTree.ExpandAll();
     }
     InfoLabel.Markup          = "<b>Assembly</b> development information";
     DescriptionBox.DataSource = null;
     DescriptionBox.Visible    = false;
 }