Qbservable.Publish<TSource, TResult> Method (IQbservable<TSource>, Expression<Func<IObservable<TSource>, IObservable<TResult>>>, TSource)
Returns a queryable observable sequence that is the result of invoking the selector on a connectable observable sequence that shares a single subscription to the underlying sequence.
Assembly: System.Reactive.Providers (in System.Reactive.Providers.dll)
public static IQbservable<TResult> Publish<TSource, TResult>( this IQbservable<TSource> source, Expression<Func<IObservable<TSource>, IObservable<TResult>>> selector, TSource initialValue )
The type of source.
The type of result.
- Type: System.Reactive.Linq.IQbservable<>
The source sequence whose elements will be multicasted through a single shared subscription.
- Type: System.Linq.Expressions.Expression<Func<IObservable<>, IObservable<>>>
The selector function which can use the multicasted source sequence as many times as needed, without causing multiple subscriptions to the source sequence.
The initial value received by observers upon subscription.
Return ValueType: System.Reactive.Linq.IQbservable<>
A queryable observable sequence that contains the elements of a sequence produced by multicasting the source sequence within a selector function.
Usage NoteIn Visual Basic and C#, you can call this method as an instance method on any object of type IQbservable<>. 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.