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MoreEnumerableMaxByTSource, TKey Method (IEnumerableTSource, FuncTSource, TKey)

Returns the maximal element of the given sequence, based on the given projection.

Namespace:  MoreLinq
Assembly:  MoreLinq (in MoreLinq.dll) Version: 2.4.0
public static TSource MaxBy<TSource, TKey>(
	this IEnumerable<TSource> source,
	Func<TSource, TKey> selector


Type: System.Collections.GenericIEnumerableTSource
Source sequence
Type: SystemFuncTSource, TKey
Selector to use to pick the results to compare

Type Parameters

Type of the source sequence
Type of the projected element

Return Value

Type: TSource
The maximal element, according to the projection.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IEnumerableTSource. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).
ArgumentNullExceptionsource or selector is null
InvalidOperationExceptionsource is empty
If more than one element has the maximal projected value, the first one encountered will be returned. This overload uses the default comparer for the projected type. This operator uses immediate execution, but only buffers a single result (the current maximal element).
See Also