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LINQ to Objects

Aggregation

Aggregate, Average, Count, LongCount, Max, Min, Sum

      Aggregate (simple)       Aggregate (seed)       Average       Count       LongCount       Max       Min       Sum

Conversion

AsEnumerable, Cast, OfType, ToArray, ToDictionary, ToList, ToLookup

      AsEnumerable       Cast       OfType       ToArray       ToDictionary (simple)       ToDictionary (conditional)       ToList       ToLookup

Element

ElementAt, ElementAtOrDefault, First, FirstOrDefault, Last, LastOrDefault, Single, SingleOrDefault

      ElementAt       ElementAtOrDefault       First (simple)       First (conditional)       FirstOrDefault       Last       LastOrDefault (simple)       LastOrDefault (conditional)       Single       SingleOrDefault

Generation

DefaultIfEmpty, Empty, Range, Repeat

      DefaultIfEmpty (simple)       DefaultIfEmpty (default value)       Empty       Range       Repeat

Grouping

GroupBy

      GroupBy

Join

GroupJoin, Join

      GroupJoin (left outer join)       Join (inner join)

Ordering

OrderBy, OrderByDescending, Reverse, ThenBy, ThenByDescending

      OrderBy (simple - numbers)       OrderBy (simple - dates)       OrderBy (simple - objects)       OrderByDescending       Reverse       ThenBy       ThenByDescending

Other

Concat, SequenceEqual, Zip

      Concat (simple - numbers)       Concat (simple - strings)       SequenceEqual       Zip

Partitioning

Skip, SkipWhile, Take, TakeWhile

      Skip       SkipWhile       Take       TakeWhile

Projection

Select, SelectMany

      Select (simple)       Select (anonymous type)       Select (indexed)       SelectMany (cross join)

Quantifiers

All, Any, Contains

      All       Any       Contains

Restriction

Where

      Where (simple - numbers)       Where (simple - objects)       Where (indexed)

Set

Distinct, Except, Intersect, Union

      Distinct       Except       Intersect       Union
  Close

Max

Lambda Query

Max: Finds the largest value in a collection.

Max: Finds the largest value in a collection.

This Lambda Expression sample finds the highest number in array.

This Lambda Expression sample finds the highest number in array.

  • C#
  • VB.Net
  • F#
// A Query Expression cannot be constructed for Max() in C#.
// Consider using a Lambda Expression instead.
Private Shared Sub Sample_Max_Linq()
    Dim numbers As Integer() = {2, 8, 5, 6, 1}

    Dim result = Aggregate n In numbers Into Max()

    Debug.WriteLine("Highest number is:")
    Debug.WriteLine(result)
End Sub
Output:
Highest number is:
8
// There is no Max() for Query Expressions in F#, but it has the similar "maxBy".
let Sample_Max_Linq =
    let numbers = [|2; 8; 5; 6; 1|]

    let result = query {
        for n in numbers do
        maxBy n
    }

    Debug.WriteLine(sprintf "Highest number is:")
    Debug.WriteLine(sprintf "%d" result)
Output:
Highest number is:
8
  • C#
  • VB.Net
  • F#
static void Sample_Max_Lambda()
{
    int[] numbers = { 2, 8, 5, 6, 1 };

    var result = numbers.Max();

    Debug.WriteLine("Highest number is:");
    Debug.WriteLine(result);
}
Output:
Highest number is:
8
Private Shared Sub Sample_Max_Lambda()
    Dim numbers As Integer() = {2, 8, 5, 6, 1}

    Dim result = numbers.Max()

    Debug.WriteLine("Highest number is:")
    Debug.WriteLine(result)
End Sub
Output:
Highest number is:
8
let Sample_Max_Lambda() =
    let numbers = [|2; 8; 5; 6; 1|]

    let result = numbers.Max()

    Debug.WriteLine(sprintf "Highest number is:")
    Debug.WriteLine(sprintf "%d" result)
Output:
Highest number is:
8

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