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.
Assembly: System.Core (in System.Core.dll)
public: generic<typename TSource> [ExtensionAttribute] static TSource LastOrDefault( IEnumerable<TSource>^ source, Func<TSource, bool>^ predicate )
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: TSourcedefault(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.
Available since 8
.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