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Reactive Extensions
Reactive Extensions Class Library
System.Reactive.Linq
Qbservable Class
Qbservable Methods
Aggregate Method
All(TSource) Method
Amb Method
And(TLeft, TRight) Method
Any Method
AsObservable(TSource) Method
AsQbservable(TSource) Method
Average Method
Buffer Method
Cast(TResult) Method
Catch Method
CombineLatest(TFirst, TSecond, TResult) Method
Concat Method
Contains Method
Count(TSource) Method
Create Method
DefaultIfEmpty Method
Defer(TValue) Method
Delay Method
Dematerialize(TSource) Method
Distinct Method
DistinctUntilChanged Method
Do Method
ElementAt(TSource) Method
ElementAtOrDefault(TSource) Method
Empty Method
Finally(TSource) Method
FromAsyncPattern Method
FromEvent Method
FromEventPattern Method
Generate Method
GroupBy Method
GroupByUntil Method
GroupJoin(TLeft, TRight, TLeftDuration, TRightDuration, TResult) Method
IgnoreElements(TSource) Method
Interval Method
Join(TLeft, TRight, TLeftDuration, TRightDuration, TResult) Method
Latest(TSource) Method
LongCount(TSource) Method
Materialize(TSource) Method
Max Method
MaxBy Method
Merge Method
Min Method
MinBy Method
MostRecent(TSource) Method
Multicast(TSource, TIntermediate, TResult) Method
Never(TResult) Method
Next(TSource) Method
ObserveOn Method
OfType(TResult) Method
OnErrorResumeNext Method
Publish Method
PublishLast(TSource, TResult) Method
Range Method
RefCount(TSource) Method
Repeat Method
Replay Method
Retry Method
Return Method
Sample Method
Scan Method
Select Method
SelectMany Method
SequenceEqual Method
Skip(TSource) Method
SkipLast(TSource) Method
SkipUntil(TSource, TOther) Method
SkipWhile Method
Start Method
StartWith Method
SubscribeOn Method
Sum Method
Switch(TSource) Method
Synchronize Method
Take(TSource) Method
TakeLast(TSource) Method
TakeUntil(TSource, TOther) Method
TakeWhile Method
Then(TSource, TResult) Method
Throttle Method
Throw Method
TimeInterval Method
Timeout Method
Timer Method
Timestamp Method
ToArray(TSource) Method
ToAsync Method
ToDictionary Method
ToList(TSource) Method
ToLookup Method
ToObservable Method
ToQbservable(TSource) Method
ToQueryable(TSource) Method
Using(TSource, TResource) Method
When Method
Where Method
Window Method
Zip Method
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Qbservable.Then(TSource, TResult) Method

Matches when the queryable observable sequence has an available value and projects the value.

Namespace:  System.Reactive.Linq
Assembly:  System.Reactive.Providers (in System.Reactive.Providers.dll)
C#
C++
F#
JScript
VB
Copy 
JScript does not support generic types and methods.

Type Parameters

TSource

The type of source.

TResult

The type of result.

Parameters

source
Type: System.Reactive.Linq.IQbservable(TSource)
The queryable observable source sequence.
selector
Type: System.Linq.Expressions.Expression(Func(TSource, TResult))
A transform function to apply to each source element.

Return Value

Type: System.Reactive.Joins.QueryablePlan(TResult)
The queryable observable sequence has an available value and projects the value.

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 http://msdn.microsoft.com/en-us/library/bb384936(v=vs.103).aspx or http://msdn.microsoft.com/en-us/library/bb383977(v=vs.103).aspx.
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