recursiveUL.aspx

        <%
        Action<System.Data.DataTable, int> printCategoriesRecursively = null;
        printCategoriesRecursively = (System.Data.DataTable categoryRows, int depth) => {
            if (categoryRows==null || categoryRows.Rows.Count==0) return;
        %>
            <ul class="node-list depth-<%=depth%>">
        <%
            foreach (System.Data.DataRow CategoryRow in categoryRows.Rows) {
            %>
            <li>
                <%=CategoryRow["categoryCode"]%>
                <% BAL.Category Category = new BAL.Category((String)CategoryRow["categoryCode"]); %>
                <%printCategoriesRecursively(Category.getChildren(), depth + 1);%>
            </li>
            <%
            }
        %>
            </ul>
        <%
        };
        printCategoriesRecursively(TopLevelCategories, 0);
        %>