Explain IEnumerable vs IQuerable in C#.
Technology
Web App Development
Mobile App Development
Windows App Development
Database Development
UI/UX Development
Cloud Development
SEO
Digital Marketing
Guest Posting
Content Writing
Artificial Intelligence
Data Science
ERP Development
CRM Development
CMS Development
LMS Development
Business Listing
Blockchain Technology
Startup Promotion
Student
Content writing is the process of writing, editing, and publishing content in a digital format. That content can include blog posts, video or podcast scripts, ebooks or whitepapers, press releases, product category descriptions, landing page or social media copy and more.
Can you answer this question?
Write Answer1 Answers
In C#, there are two interfaces, IEnumerable and IQueryable that are used to for data querying but they vary in where and in what mode, the query is executed. Here's a straightforward comparison:
1. IEnumerable
Namespace:
System.CollectionsPurpose: For in-memory collection iteration (e.g.,
List,Array).Execution: Queries are executed in-memory after retrieving data from the data source (e.g., database).
Usage: Suitable for querying in-memory data structures like collections.
Performance: Fetches all data into memory before applying filters.
Extension Methods: Works with LINQ-to-Objects.
Example:
2. IQueryable
Namespace:
System.LinqPurpose: For querying data sources like databases using LINQ.
Execution: Queries are translated into SQL (or equivalent) and executed on the data source (deferred execution).
Usage: Suitable for querying large datasets, especially databases (e.g., Entity Framework).
Performance: Efficient because only the required data is fetched from the source.
Extension Methods: Works with LINQ-to-SQL, LINQ-to-Entities, etc.
Example:
Hope it helps!!