Depot Model
public class Depot
    {
        [Key]
        public int DepotNo { get; set; }
        public string DepotName {get;set;}
`    }

public class Department 
    {
        [Key]
        public int DepartmentID{ get; set; }
        public string DepartmentName {get;set;} 
    }

public class DepartmentWorkTime
    {
        [Key]
        public int Id { get; set; }
        public int DepotNo { get; set; }
        public int DepartmentID { get; set; }
        public DepotModel Depot { get; set; }
       public DepartmentModel Department { get; set; }
    }

Depot Model
{1, .AAAA Depot},
{2, BBBB Depot},
{4, CCCC Depot},


Department Model
{1, Retail},
{2, Office},
{3, Field Staff},
{4, Warehouse},


DepartmentWorkTime  List
{1,1,1, Depot Model ,Department Model},
{2,1,2, Depot Model ,Department Model},
{3,1,4, Depot Model ,Department Model},

{4,2,1, Depot Model ,Department Model},
{5,2,2, Depot Model ,Department Model},
{6,2,3, Depot Model ,Department Model},

{7,4,1, Depot Model ,Department Model},


Mapping View Model
 public class DepartmentMapModel
    {
        public string id { get; set; }
        public string title { get; set; }
    }

    public class DepotMapModel
    {
        public string id { get; set; }
        public string title { get; set; }
        public List<DepartmentMapModel> subs { get; set; }
    }

 
I am trying to get the result as given below

[0] = { id = 1, title = "1-AAAA Depot", subs = {System.Collections.Generic.List<<>f__AnonymousType10<string, string>>} }
Subs

[0] { id = "1.1", title = "1.Retail" }  <Anonymous Type>
[1] { id = "1.2", title = "1.Office" }  <Anonymous Type>
[2] { id = "1.4", title = "1.Warehouse" }   <Anonymous Type>

[1] = { id = 2, title = "2-BBBB Depot", subs = {System.Collections.Generic.List<<>f__AnonymousType10<string, string>>} }    
Subs
[0] { id = "2.1", title = "2.Retail" }  <Anonymous Type>
[1] { id = "2.2", title = "2.Office" }  <Anonymous Type>
[2] { id = "2.3", title = "2.Field Staff" } <Anonymous Type>



[2] ={ id = 3, title = "4-CCCC Depot", subs = {System.Collections.Generic.List<<>f__AnonymousType10<string, string>>} }

Subs
[0] { id = "4.1", title = "4.Retail" }  <Anonymous Type>