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Enumerable.LastOrDefault<'TSource> Method (IEnumerable<'TSource>, Func<'TSource, Boolean>)

 

Returns the last element of a sequence that satisfies a condition or a default value if no such element is found.

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

static member LastOrDefault<'TSource> : 
        source:IEnumerable<'TSource> *
        predicate:Func<'TSource, bool> -> 'TSource

Parameters

source
Type: System.Collections.Generic.IEnumerable<'TSource>

An IEnumerable<'T> to return an element from.

predicate
Type: System.Func<'TSource, Boolean>

A function to test each element for a condition.

Return Value

Type: TSource

default(TSource) if the sequence is empty or if no elements pass the test in the predicate function; otherwise, the last element that passes the test in the predicate function.

Type Parameters

TSource

The type of the elements of source.

Exception Condition
ArgumentNullException

source or predicate is null.

The default value for reference and nullable types is null.

The following code example demonstrates how to use LastOrDefault<'TSource>(IEnumerable<'TSource>, Func<'TSource, Boolean>) by passing in a predicate. In the second call to the method, there is no element in the sequence that satisfies the condition.

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
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1
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