Method MaxItems

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MaxItems<T>(IEnumerable<T>)

Returns all of the items that share the maximum value of a sequence.

Declaration
public static IEnumerable<T> MaxItems<T>(this IEnumerable<T> source)
Parameters
Type Name Description
IEnumerable<T> source

The source sequence.
Returns
Type Description
IEnumerable<T>

An IEnumerable<T> containing all of the items that share the maximum value.
Type Parameters
Name Description
T

Type of elements in the sequence.
Remarks

This operator is a shortcut for DensePartialSort<T>(IEnumerable<T>, int, OrderByDirection) with a direction of Descending and a count of 1.

This method is implemented by using deferred execution. However, source will be consumed in it's entirety immediately when first element of the returned sequence is consumed.

Examples

The following code example demonstrates how to get the maximum items from a sequence using MaxItems.

var sequence = new[]
{
    "A", "B", "C", "D", "F",
    "a", "b", "c", "d", "f",
}.AsEnumerable();

// Find the maximum items of the sequence
var result = sequence
    .MaxItems();

Console.WriteLine(
    "[" +
    string.Join(", ", result) +
    "]");

// This code produces the following output:
// [F]
Exceptions
Type Condition
ArgumentNullException

source is null.
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MaxItems<T>(IEnumerable<T>, IComparer<T>?)

Returns all of the items that share the maximum value of a sequence.

Declaration
public static IEnumerable<T> MaxItems<T>(this IEnumerable<T> source, IComparer<T>? comparer)
Parameters
Type Name Description
IEnumerable<T> source

The source sequence.
IComparer<T> comparer

A IComparer<T> to compare elements.
Returns
Type Description
IEnumerable<T>

An IEnumerable<T> containing all of the items that share the maximum value.
Type Parameters
Name Description
T

Type of elements in the sequence.
Remarks

This operator is a shortcut for DensePartialSort<T>(IEnumerable<T>, int, IComparer<T>?, OrderByDirection) with a count of 1.

This method is implemented by using deferred execution. However, source will be consumed in it's entirety immediately when first element of the returned sequence is consumed.

Examples

The following code example demonstrates how to get the maximum items from a sequence using MaxItems.

var sequence = new[]
{
    "A", "B", "C", "D", "F",
    "a", "b", "c", "d", "f",
}.AsEnumerable();

// Find the maximum items of the sequence
var result = sequence
    .MaxItems(StringComparer.OrdinalIgnoreCase);

Console.WriteLine(
    "[" +
    string.Join(", ", result) +
    "]");

// This code produces the following output:
// [F]
Exceptions
Type Condition
ArgumentNullException

source is null.