Can we use IQueryable in LINQ?
IQueryable is suitable for LINQ to SQL queries. IQueryable supports deferred execution.
Which method is valid in LINQ?
Most of the LINQ projection and restriction methods are supported in LINQ to Entities queries, with the exception of those that accept a positional argument. For more information, see Standard Query Operators in LINQ to Entities Queries.
What is IQueryable interface?
The IQueryable interface is intended for implementation by query providers. 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.
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.
What is the difference between the IQueryable and IEnumerable interface?
While querying data from database, IEnumerable executes select query on server side, load data in-memory on client side and then filter data. While querying data from database, IQueryable executes select query on server side with all filters. Hence does less work and becomes fast.
What is IQueryable and IEnumerable in C#?
Querying data from a database, IEnumerable execute a select query on the server side, load data in-memory on a client-side and then filter data. Querying data from a database, IQueryable execute the select query on the server side with all filters.
What are the LINQ methods?
In LINQ, Method Syntax is used to call the extension methods of the Enumerable or Queryable static classes. It is also known as Method Extension Syntax or Fluent. However, the compiler always converts the query syntax in method syntax at compile time.
What is IQueryable and IEnumerable?
IQueryable support lazy loading. Querying data from a database, IEnumerable execute a select query on the server side, load data in-memory on a client-side and then filter data. Querying data from a database, IQueryable execute the select query on the server side with all filters.
Which is faster IQueryable or 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 a collection?
Both IEnumerable and IQueryable are forward collection. Querying data from a database, IEnumerable execute a select query on the server side, load data in-memory on a client-side and then filter data.