I have three models in my application. Customer can have single or multiple Orders and each order can contains single or multiple Products.
Write a Linq code to get Order details based on order number and return the result as JSON. 
 
Models: 
Customer Model:
- public class Customer  
- {  
-     public string CustomerName { get; set; }  
-     public int CustomerNumber { get; set; }  
-     public List<Order> Orders { get; set; }  
- }  
Order Model:
- public class Order  
- {  
-     public int OrderNumber { get; set; }  
-     public DateTime OrderDate{ get; set; }  
-     public List<Product> ProductList { get; set; }  
- }  
- public class Product  
- {  
-     public string ProductNumber { get; set; }  
-     public string Name { get; set; }  
-     public int Quantity { get; set; }  
-     public string Description { get; set; }  
-     public double Price { get; set; }  
-     public string ProductGroup { get; set; }  
-     public string OrderLineNumber { get; set; }  
-           
- }  
Linq Code to select Order Details based on Order number: 
-   
- var result = from customer in customersList  
-           from order in customer.Orders  
-           where order.OrderNumber.Equals(orderNumber)  
-           select new { customer.CustomerName, customer.CustomerNumber,order };  
 
Return Order Details as JSON Result:
-   
- return new JsonResult { Data = result };