SecureDelete.FileSearch.ExpressionEvaluator.GetExpressionTreeString C# (CSharp) Méthode

        public string GetExpressionTreeString(ExpressionTree tree)
        {
            if(tree == null) {
                throw new ArgumentNullException("tree");
            }

            return TreeToString(tree.Root).Trim();
        }

        private void LoadFilters()
        {
            loading = true;
            FilterHost.SuspendLayout();
            filterViews.Clear();
            FilterHost.Controls.Clear();

            if(fileFilter == null) {
                FilterHost.ResumeLayout();
                return;
            }

            int count = fileFilter.FilterCount;
            for(int i = 0; i < count; i++) {
                FilterBase filter = fileFilter.GetFilter(i);

                if(filter is SizeFilter) {
                    AddSizeFilter(filter as SizeFilter, false);
                }
                else if(filter is DateFilter) {
                    AddDateFilter(filter as DateFilter, false);
                }
                else if(filter is AttributeFilter) {
                    AddAttributeFilter(filter as AttributeFilter, false);
                }
                else if(filter is ImageFilter) {
                    AddImageFilter(filter as ImageFilter, false);
                }
                else {
                    Debug.ReportWarning("Unsupported file Filter. Type: {0}", filter.GetType().FullName);
                }
            }

            LayoutFilterViews();
            FilterHost.ResumeLayout();

            if(fileFilter.ExpressionTree != null) {
                ExpressionEvaluator evaluator = new ExpressionEvaluator();
                ExpressionText.Text = evaluator.GetExpressionTreeString(fileFilter.ExpressionTree);
                AdvancedButton.Checked = true;
                splitContainer1.Panel2Collapsed = false;
                ExpressionText.Height = splitContainer1.Panel2.Height;
                UpdateTextColor(GetFilerNames());
            }

            loading = false;
        }