Max(TSource, TResult) Method (IEnumerable(TSource), Func(TSource, TResult))

Enumerable::Max<TSource, TResult> Method (IEnumerable<TSource>^, Func<TSource, TResult>^)


Invokes a transform function on each element of a generic sequence and returns the maximum resulting value.

Namespace:   System.Linq
Assembly:  System.Core (in System.Core.dll)

generic<typename TSource, typename TResult>
static TResult Max(
	IEnumerable<TSource>^ source,
	Func<TSource, TResult>^ selector


Type: System.Collections.Generic::IEnumerable<TSource>^

A sequence of values to determine the maximum value of.

Type: System::Func<TSourceTResult>^

A transform function to apply to each element.

Return Value

Type: TResult

The maximum value in the sequence.

Type Parameters


The type of the elements of source.


The type of the value returned by selector.

Exception Condition

source or selector is null.

If type TResult implements IComparable<T>, this method uses that implementation to compare values. Otherwise, if type TResult implements IComparable, that implementation is used to compare values.

In Visual Basic query expression syntax, an Aggregate Into Max() clause translates to an invocation of Max.

The following code example demonstrates how to use Max<TSource>(IEnumerable<TSource>^, Func<TSource, Int32>^) to determine the maximum value in a sequence of projected values.


This code example uses an overload of this overloaded method that is different from the specific overload that this topic describes. To extend the example to this topic, change the body of the selector function.

No code example is currently available or this language may not be supported.

Universal Windows Platform
Available since 4.5
.NET Framework
Available since 3.5
Portable Class Library
Supported in: portable .NET platforms
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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