Filtering Collections with LINQ

Snippet

Filtering Collections with LINQ

LINQ (Language Integrated Query) provides a powerful, declarative way to manipulate collections. The intermediate level involves chaining multiple operators to transform data efficiently.

snippet.csharp
csharp
var activeUsers = users
    .Where(u => u.IsActive)
    .OrderBy(u => u.LastName)
    .Select(u => u.Email)
    .ToList();

Breakdown

.Where(u => u.IsActive)

Filters the sequence based on a predicate (only active users).

.OrderBy(u => u.LastName)

Sorts the filtered results alphabetically by last name.

.Select(u => u.Email)

Projects each element into a new form (extracting only the email string).

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Filtering Collections with LINQ

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