Last(TSource) Method (IEnumerable(TSource))

Enumerable.Last<TSource> Method (IEnumerable<TSource>)

Returns the last element of a sequence.

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

public static TSource Last<TSource>(
	this IEnumerable<TSource> source

Type Parameters


The type of the elements of source.


Type: System.Collections.Generic.IEnumerable<TSource>
An IEnumerable<T> to return the last element of.

Return Value

Type: TSource
The value at the last position in the source sequence.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IEnumerable<TSource>. 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).


source is null.


The source sequence is empty.

The Last<TSource>(IEnumerable<TSource>) method throws an exception if source contains no elements. To instead return a default value when the source sequence is empty, use the LastOrDefault method.

The following code example demonstrates how to use Last<TSource>(IEnumerable<TSource>) to return the last element of an array.

            int[] numbers = { 9, 34, 65, 92, 87, 435, 3, 54, 
                                83, 23, 87, 67, 12, 19 };

            int last = numbers.Last();


             This code produces the following output:


.NET Framework

Supported in: 4, 3.5

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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