csharp-linq

Master C# LINQ for querying collections using query/method syntax, deferred execution, and performance optimization.

• LINQ for data querying in C#
• Two syntaxes: query and method syntax
• Supports deferred execution and expression trees

• Query and method syntax compile to same code
• Deferred execution delays query execution until enumeration
• IEnumerable executes in memory; IQueryable builds expression trees
• IQueryable supports remote execution (e.g., EF, SQL)
• Performance optimized via expression trees and filtering at source
• Supports complex transformations and joins

1. 1.Use query syntax for joins and readable, SQL-like queries
2. 2.Use method syntax for complex chaining and filtering
3. 3.Leverage deferred execution to avoid unnecessary processing
4. 4.Use IQueryable for database queries with expression trees
5. 5.Force execution with ToList(), ToArray(), or similar methods when needed