.NET interview questions: – How to implement practically Lazy loading in .NET?

In .NET we have “Lazy<T>” class which provides automatic support for lazy loading. So let’s say if you want to implement “Lazy<>” in the above code we need to implement two steps for the same:-

Create the object of orders using the “Lazy” generic class.

private Lazy<List> _Orders= null;

Attach this Lazy<> object with the method which will help us load the order’s data.

_Orders = new Lazy<List>(() => LoadOrders());

Now as soon as any client makes a call to the “_Orders” object, It will call the “LoadOrders” function to load the data.

You will get the “List<Orders>” data in the “Value” property.

        public List Orders
        {
            get 
            {
                return _Orders.Value; 
            }

        }

Below goes the full code for the same.

public class Customer
{
private Lazy<List> _Orders= null;

        public List Orders
        {
            get 
            {
                return _Orders.Value; 
            }

        }
 public Customer()
        {
            // Makes a database trip
            _CustomerName = "Shiv";
            _Orders = new Lazy<List>(() => LoadOrders());

        }
}

Also see our .NET interview questions video on Lazy Loading in Design Pattern: –

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