How to creating a Dynamic sub-menus by sub-categories

Question

I\'m setting a Menu with Sub-menu display Sub-categories, in database I created a column isSelected with Boolean data type. If only

Answer 1

Check if this helps.

public abstract class BaseController : Controller
{

    protected override void OnActionExecuting(ActionExecutingContext filterContext)
    {
        IEnumerable menus = BuildMenu();
        ViewBag.Menus = menus;
        //base.OnActionExecuting(filterContext);
    }

    private IEnumerable BuildMenu()
    {
        IEnumerable menus = new List
        {
            new MVC3Stack.Models.MenuItem{Id = 1, Level = 0, ParentId = 0, Text = "Main", Url = Url.Action("Index", "Home"), IsSelected=true, HasChildren=true },
            new MVC3Stack.Models.MenuItem { Id = 2, Level = 1, ParentId = 1, Text = "Main-SubMenu1", Url = Url.Action("Index", "Home"), IsSelected=false, HasChildren=false },
            new MVC3Stack.Models.MenuItem { Id = 3, Level = 1, ParentId = 1, Text = "Main-SubMenu2", Url = Url.Action("Index", "Home"), IsSelected=true , HasChildren=false},
            new MVC3Stack.Models.MenuItem { Id = 4, Level = 0, ParentId = 0, Text = "Second Menu", Url = Url.Action("Index", "Home") ,IsSelected=true, HasChildren=true},
            new MVC3Stack.Models.MenuItem { Id = 5, Level = 1, ParentId = 4, Text = "Second Menu-SubMenu1", Url = Url.Action("Index", "Home"),IsSelected=true, HasChildren=false }
        };
        return menus;
    }
}

Here is the _layout.cshtml

@{
  var topLevel = ((IEnumerable)ViewBag.Menus).Where(x => x.Level == 0);
 }
 

     @foreach (var item in topLevel)
     {
        if (item.IsSelected)
        {

        

            @item.Text
            @if (item.HasChildren)
            {
                var level1 = ((IEnumerable)ViewBag.Menus).Where(x => x.Level == 1 && x.ParentId == item.Id);
                

                @foreach (var item1 in level1)
                {
                if (item1.IsSelected)
                {
                     

                        @item1.Text
                     
                 }
              }

         
      }
   
    }
  }   

This can give you some pointers on how to implemente this. Note: Number of levels will be fixed with this solution.