Calling partial view from _Layout.cshtml

Question

I have a main category and main category has its subcategory list in database. So its a relational database. For better understanding .edmx map picture is attached. Now my goal

Answer 1

1.Change @Html.Partial("_GuestNav") to @{Html.RenderAction("_GuestNav", "YourControlerName");}

2.Add @Model TypeofYourViewModel on top of your partial view.

3.Change the looping as follows:

@foreach (var item in Model)
    {
        

            @item.MainCatName
            

                @foreach (var subcat in item.subcat)
                {
                    
subcat.SubcatName
                }
            
        
    }

Note: Change TypeofYourViewModel to whatever ViewModel you are passing into the partial view