What is the difference between IEnumerable and IQueryable give example?

What is the difference between IEnumerable and IQueryable give example?

The main difference between IEnumerable and IQueryable in C# is that IQueryable queries out-of-memory data stores, while IEnumerable queries in-memory data. Moreover, IQueryable is part of . NET’s System. LINQ namespace, while IEnumerable is in System.

What is an IEnumerable in Entity Framework?

IEnumerable fetches all the data from SQLServer then it applies filters over fetched data. Let’s break-down its flow from the client to the server. The client makes a call to fetch data with filters using Entity Framework with IEnumerable.

When should I use IQueryable and IEnumerable using LINQ?

In LINQ to query data from database and collections, we use IEnumerable and IQueryable for data manipulation. IEnumerable is inherited by IQueryable, Hence IQueryable has all the features of IEnumerable and except this, it has its own features. Both have its own importance to query data and data manipulation.

Why we use IEnumerable instead of list?

“IEnumerable describes behaviour, while List is an implementation of that behaviour. When you use IEnumerable, you give the compiler a chance to defer work until later, possibly optimising along the way. If you use ToList() you force the compiler to reify the results right away.”

Is IEnumerable more efficient than list?

It’s that IEnumerable is a more efficient design construct because it’s a more specific indication of what your design requires. (Though this can lead to runtime gains in specific cases.)

When should you use IEnumerable?

IEnumerable interface is used when we want to iterate among our classes using a foreach loop. The IEnumerable interface has one method, GetEnumerator, that returns an IEnumerator interface that helps us to iterate among the class using the foreach loop.

Why should I use IEnumerable instead of List?

IEnumerable types have a method to get the next item in the collection. It doesn’t need the whole collection to be in memory and doesn’t know how many items are in it, foreach just keeps getting the next item until it runs out. List implements IEnumerable, but represents the entire collection in memory.

When should I use IEnumerable?

Why we use IEnumerable instead of List?