public ExpandingEventArgs(TreeGridNode node)
     : base()
 {
     this._node = node;
 }
 public ExpandedEventArgs(TreeGridNode node)
     : base(node)
 {
 }
 public CollapsedEventArgs(TreeGridNode node)
     : base(node)
 {
 }
 public CollapsingEventArgs(TreeGridNode node)
     : base()
 {
     this._node = node;
 }
 public TreeGridNodeEventBase(TreeGridNode node)
 {
     this._node = node;
 }