Logic for displaying infinite category tree in nested s from Self Join Table

Question

Please help me solve my big problem.
in my on-line shopping project i created a dynamic Category List (with Infinite Level Depth) Implemented in a Sing

Answer 1

Use this recursive method

private string GenerateUL(IQueryable<Menu> menus)
{
    var sb = new StringBuilder();

    sb.AppendLine("<ul>");
    foreach (var menu in menus)
    {
        if (menu.Menus.Any())
        {
            sb.AppendLine("<li>" + menu.Text);
            sb.Append(GenerateUL(menu.Menus.AsQueryable()));
            sb.AppendLine("</li>");
        }
        else
            sb.AppendLine("<li>" + menu.Text + "</li>");
    }
    sb.AppendLine("</ul>");

    return sb.ToString();
}

like this

DataClasses1DataContext context = new DataClasses1DataContext();
var s = GenerateUL(context.Menus.Where(m => m.ParentID == null));
Response.Write(s);

Answer 2

I think ASP.NET TreeView is your friend.

Take a look here too.

Also, you might want to use a dynamically created nested DataGrid or Repeater, here is an example (you can make it dynamic, so the nested (or even the parent) repeaters are genenerated programmatically.

void GenerateChildren(Menu menu)
{
    //Create DataGridRow/RepeaterRow/TreeViewNode/whatever for this menu
    menu.Children.Load();
    foreach (var child in menu.Children)
    {
        GenerateChildren(child);        
    }
}

Update See example 5 on this page. I would recommend generating the jQuery code by server, so it's easier for you to control both the menus and the jQ generated menus.