VitNX_TreeView.EnsureVisible Method

public void EnsureVisible()
 {
     if (SelectedNodes.Count == 0)
         return;
 
     foreach (var node in SelectedNodes)
         node.EnsureVisible();
 
     var itemTop = -1;
 
     if (!MultiSelect)
         itemTop = SelectedNodes[0].FullArea.Top;
     else
         itemTop = _anchoredNodeEnd.FullArea.Top;
 
     var itemBottom = itemTop + ItemHeight;
 
     if (itemTop < Viewport.Top)
         VScrollTo(itemTop);
 
     if (itemBottom > Viewport.Bottom)
         VScrollTo((itemBottom - Viewport.Height));
 }