Recursion in an ASP.NET MVC view

Question

I have a nested data object for a set of items within categories. Each category can contain sub categories and there is no set limit to the depth of sub categories. (A file

Answer 1

You can reuse html parts with lambdas

Example

public class Category
    {
        public int id;
        public string name;
        public IEnumerable categories;
    }

 <%
        Action> categoriesMacros = null;
        categoriesMacros = categories => { %>
        

            <% foreach(var c in categories) { %>
                
 <%= Html.Encode(c.name)%> 
                <% if (c.categories != null && c.categories.Count() > 0) categoriesMacros(c.categories);  %>
            <% } %>
        
        <% }; %>

    <% var categpries = (IEnumerable)ViewData["categories"]; %>
    <% categoriesMacros(categpries); %>