LINQ makes it easy to select, sort, and shape your data.
🔎 Filtering with Where
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| var even = numbers.Where(n => n % 2 == 0);
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🗂️ Ordering with OrderBy
/ OrderByDescending
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| var sorted = names.OrderBy(n => n);
var reversed = names.OrderByDescending(n => n);
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💡 Projecting with Select
Transform each item in a collection.
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| var lengths = names.Select(n => n.Length);
foreach (var len in lengths)
Console.WriteLine(len);
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📝 Combined Example
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| string[] fruits = { "Apple", "Banana", "Cherry" };
var result = fruits
.Where(f => f.Contains("a"))
.OrderBy(f => f)
.Select(f => f.ToUpper());
foreach (var fruit in result)
Console.WriteLine(fruit);
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💡 Try It!
From a list of numbers, print the square of all odd numbers in order:
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| int[] nums = { 1, 2, 3, 4, 5 };
var squares = nums.Where(n => n % 2 != 0)
.OrderBy(n => n)
.Select(n => n * n);
foreach (var s in squares)
Console.WriteLine(s);
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Next: Aggregation and grouping with LINQ!