Description: LinqToObjects is a LINQ (Language Integrated Query) provider that allows querying in-memory collections in the C# programming language. This approach facilitates data manipulation and querying in a more intuitive and readable manner, integrating query capabilities directly into the language. LINQ to Objects enables developers to use SQL-like syntax to interact with collections such as lists, arrays, and dictionaries, simplifying the process of filtering, sorting, and grouping data. One of the standout features of LinqToObjects is its ability to work with any collection that implements the IEnumerable
History: LinqToObjects was introduced with the arrival of LINQ in .NET Framework 3.5, released in November 2007. LINQ was designed to unify data access across different sources, such as databases, XML, and in-memory collections. The inclusion of LinqToObjects allowed developers to apply the same query syntax to in-memory collections, easing the transition between different types of data sources.
Uses: LinqToObjects is primarily used in .NET applications to query in-memory collections, such as lists and arrays. It allows developers to filter, sort, and group data efficiently and readably. It is also used in scenarios where data manipulation is required at runtime, such as in desktop applications, web services, and mobile applications.
Examples: A practical example of LinqToObjects is using a list of integers to filter even numbers. With LinqToObjects, you can write: ‘var evens = numbers.Where(n => n % 2 == 0);’. Another example would be grouping a list of objects by a specific property, such as grouping employees by department using: ‘var groups = employees.GroupBy(e => e.Department);’.
