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Observable.LastOrDefault<TSource> Method (IObservable<TSource>, Func<TSource, Boolean>)

Returns the last element of an observable sequence that matches the predicate, or a default value if no value is found.

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

public static TSource LastOrDefault<TSource>(
	this IObservable<TSource> source,
	Func<TSource, bool> predicate
)

predicate: Type: System.Func<TSource, Boolean>
A predicate function to evaluate for elements in the sequence.

Type: TSource
The last element of an observable sequence that matches the predicate, or a default value if no value is found.

In Visual Basic and C#, you can call this method as an instance method on any object of type IObservable<TSource>. When you use instance method syntax to call this method, omit the first parameter. For more information, see http://msdn.microsoft.com/en-us/library/bb384936.aspx or http://msdn.microsoft.com/en-us/library/bb383977.aspx.

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