So if you working with only in-memory data collection IEnumerable is a good choice but if you want to query data collection which is connected with database `IQueryable is a better choice as it reduces network traffic and uses the power of SQL language.
What is the difference between IEnumerable vs IQueryable?
The principle difference is that IEnumerable will enumerate all of its elements all the time, while IQueryable will enumerate elements, or even do other things, based on a query. The query is an Expression (a data representation of .
Is IQueryable faster than IEnumerable?
IQueryable is faster than IEnumerable. In addition to Munesh Sharma’s answer:IEnumerable loads data in-memory and then apply filters to it one by one but IQueryable apply filters all at once and return the result.
Is IQueryable faster?
That is why IQueryable is considered faster, because there is a lot less data that needs to be processed because you where able to ask a more specific question to the server.
Is IQueryable lazy loading?
Both IQueryable and IEnumerable support lazy loading of data from remote database servers.
When should I use IQueryable?
IQueryable uses Expression objects that result in the query being executed only when the application requests an enumeration. Use IQueryable when you have to run ad-hoc queries against data source like LinQ to SQL Server,Entity framework and other sources which implement IQueryable.
Which is better LINQ or stored procedure?
Stored procedures are faster as compared to LINQ query since they have a predictable execution plan and can take the full advantage of SQL features. Hence, when a stored procedure is being executed next time, the database used the cached execution plan to execute that stored procedure.
Why we use IQueryable in LINQ?
IQueryable is suitable for querying data from out-memory (like remote database, service) collections. While querying data from a database, IQueryable executes a “select query” on server-side with all filters. IQueryable is beneficial for LINQ to SQL queries.
Does IEnumerable support lazy loading?
IEnumerable doesn’t support lazy loading. IQueryable support lazy loading. Hence it is suitable for paging like scenarios.
Why we use IEnumerable in LINQ?
The IEnumerable is mostly used for LINQ to Object and LINQ to XML queries. The IEnumerable collection is of type forward only. That means it can only move in forward, it can’t move backward and between the items. IEnumerable supports deferred execution.
What is lazy loading and eager loading in C#?
While lazy loading delays the initialization of a resource, eager loading initializes or loads a resource as soon as the code is executed. Eager loading also involves pre-loading related entities referenced by a resource.
What is difference between IQueryable and list in C#?
List
Is IQueryable faster than list?
GetList(context) might return an object backed by a custom LINQ provider (like an Entity Framework collection), then you probably want to leave the data cast as an IQueryable: even though your benchmark shows it being 20 times faster to use a list, that difference is so small that no user is ever going to be able to
Does IEnumerable implement IQueryable?
The IQueryable interface inherits the IEnumerable interface so that if it represents a query, the results of that query can be enumerated. Enumeration causes the expression tree associated with an IQueryable object to be executed.
Which is better IEnumerable or list?
IEnumerable is best to query data from in-memory collections like List, Array etc. IEnumerable doesn’t support add or remove items from the list. Using IEnumerable we can find out the no of elements in the collection after iterating the collection.
What is IEnumerable and IQueryable in C#?
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. Collections namespace.
Is Linq lazy loading?
What is Lazy Loading? Lazy Loading means the related entities are not loaded, until we iterate through them or bind them the data. By default, LINQ to SQL loads the related entities, using Lazy Loading. There is one-to-many relationship between Department and Employees entities.
Which is better eager loading or lazy loading?
Use Eager Loading when you are sure that you will be using related entities with the main entity everywhere. Use Lazy Loading when you are using one-to-many collections. Use Lazy Loading when you are sure that you are not using related entities instantly.
