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Qbservable::Publish<TSource, TResult> Method (IQbservable<TSource>, Expression<Func<IObservable<TSource>, IObservable<TResult>>>)

Returns a queryable observable sequence that is the result of invoking the selector on a connectable queryable observable sequence that shares a single subscription to the underlying sequence.

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

[ExtensionAttribute]
public:
generic<typename TSource, typename TResult>
static IQbservable<TResult>^ Publish(
	IQbservable<TSource>^ source, 
	Expression<Func<IObservable<TSource>^, IObservable<TResult>^>^>^ selector
)

Type Parameters

TSource

The type of source.

TResult

The type of result.

Parameters

source
Type: System.Reactive.Linq::IQbservable<TSource>
The source sequence whose elements will be multicasted through a single shared subscription.
selector
Type: System.Linq.Expressions::Expression<Func<IObservable<TSource>, IObservable<TResult>>>
The selector function which can use the multicasted source sequence as many times as needed, without causing multiple subscriptions to the source sequence.

Return Value

Type: System.Reactive.Linq::IQbservable<TResult>
A queryable observable sequence that contains the elements of a sequence produced by multicasting the source sequence within a selector function.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IQbservable<TSource>. When you use instance method syntax to call this method, omit the first parameter. For more information, see https://msdn.microsoft.com/en-us/library/bb384936(v=vs.103).aspx or https://msdn.microsoft.com/en-us/library/bb383977(v=vs.103).aspx.
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