void UpdateNodeCellsForResult(TreeModelViewNode viewNode, FileAssociation fileAssociation)
 {
   viewNode.SetValue(myPatternTypeColumn, fileAssociation.PatternType);
   
   string docType = String.Format("{0}{1}", fileAssociation.DocType, fileAssociation.Enabled ? null : " (disabled)");
   viewNode.SetValue(myAssociationColumn, docType);
 }
        void UpdateNodeCellsForResult(TreeModelViewNode viewNode, FileAssociation fileAssociation)
        {
            viewNode.SetValue(myPatternTypeColumn, fileAssociation.PatternType);

            string docType = String.Format("{0}{1}", fileAssociation.DocType, fileAssociation.Enabled ? null : " (disabled)");

            viewNode.SetValue(myAssociationColumn, docType);
        }
    protected override void UpdateNodeCells(TreeModelViewNode viewNode, TreeModelNode modelNode, PresentationState state)
    {
      base.UpdateNodeCells(viewNode, modelNode, state);
      viewNode.SetValue(myPatternTypeColumn, RichText.Empty);
      viewNode.SetValue(myAssociationColumn, RichText.Empty);

      var association = modelNode.DataValue as FileAssociation;
      if (association != null)
      {
        UpdateNodeCellsForResult(viewNode, association);
      }
    }
        protected override void UpdateNodeCells(TreeModelViewNode viewNode, TreeModelNode modelNode, PresentationState state)
        {
            base.UpdateNodeCells(viewNode, modelNode, state);
            viewNode.SetValue(myPatternTypeColumn, RichText.Empty);
            viewNode.SetValue(myAssociationColumn, RichText.Empty);

            var association = modelNode.DataValue as FileAssociation;

            if (association != null)
            {
                UpdateNodeCellsForResult(viewNode, association);
            }
        }
 protected override void InitializeCells(TreeModelViewNode viewNode, TreeModelNode modelNode)
 {
     viewNode.SetValue(this.ModelColumn, new PresentableItem());
 }