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RxJS Documentation
Count Method
RxJS
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Visual Basic
C#
.NET Framework Class Library
Observable
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Count Method
Observable Class
See Also
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Returns an number representing the total number of elements in an observable sequence.
Namespace:
Rx
Assembly:
RxJS
(in RxJS.dll)
Syntax
JavaScript
function
Count
();
See Also
Observable Class
Rx Namespace
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Table of contents
Rx Namespace
AsyncSubject Class
AsyncSubject Constructor
AsyncSubject Constructor
AsyncSubject Constructor (Scheduler)
AsyncSubject Methods
Any Method
BufferWithCount Method
BufferWithTime Method
BufferWithTimeOrCount Method
Catch Method
Concat Method
Contains Method
Delay Method
DistinctUntilChanged Method
Do Method
GroupBy Method
Let Method
MaxBy Method
Merge Method
MinBy Method
OnCompleted Method
OnError Method
OnErrorResumeNext Method
OnNext Method
Prune Method
Publish Method
Repeat Method
Replay Method
Retry Method
Sample Method
Select Method
StartWith Method
Subscribe Method
Take Method
Throttle Method
TimeInterval Method
Timeout Method
Timestamp Method
Where Method
BehaviorSubject Class
BehaviorSubject Constructor
BehaviorSubject Constructor (Object)
BehaviorSubject Constructor (Object, Scheduler)
BehaviorSubject Methods
Any Method
BufferWithCount Method
BufferWithTime Method
BufferWithTimeOrCount Method
Catch Method
Concat Method
Contains Method
Delay Method
DistinctUntilChanged Method
Do Method
GroupBy Method
Let Method
MaxBy Method
Merge Method
MinBy Method
OnErrorResumeNext Method
Prune Method
Publish Method
Repeat Method
Replay Method
Retry Method
Sample Method
Select Method
StartWith Method
Subscribe Method
Take Method
Throttle Method
TimeInterval Method
Timeout Method
Timestamp Method
Where Method
BooleanDisposable Class
BooleanDisposable Constructor
BooleanDisposable Methods
Dispose Method
GetIsDisposed Method
CompositeDisposable Class
CompositeDisposable Constructor
CompositeDisposable Constructor
CompositeDisposable Constructor (IDisposable)
CompositeDisposable Constructor (IDisposable, IDisposable)
CompositeDisposable Constructor (IDisposable, IDisposable, IDisposable)
CompositeDisposable Constructor (IDisposable, IDisposable, IDisposable, IDisposable)
CompositeDisposable Methods
Add Method
Clear Method
Dispose Method
GetCount Method
Remove Method
ConnectableObservable Class
ConnectableObservable Constructor
ConnectableObservable Constructor (Observable)
ConnectableObservable Constructor (Observable, ISubject)
ConnectableObservable Methods
Any Method
BufferWithCount Method
BufferWithTime Method
BufferWithTimeOrCount Method
Catch Method
Concat Method
Connect Method
Contains Method
Delay Method
DistinctUntilChanged Method
Do Method
GroupBy Method
Let Method
MaxBy Method
Merge Method
MinBy Method
OnErrorResumeNext Method
Prune Method
Publish Method
RefCount Method
Repeat Method
Replay Method
Retry Method
Sample Method
Select Method
StartWith Method
Subscribe Method
Take Method
Throttle Method
TimeInterval Method
Timeout Method
Timestamp Method
Where Method
Disposable Class
Disposable Methods
Create Method
Disposable Properties
Empty Property
GroupedObservable Class
GroupedObservable Methods
Any Method
BufferWithCount Method
BufferWithTime Method
BufferWithTimeOrCount Method
Catch Method
Concat Method
Contains Method
Delay Method
DistinctUntilChanged Method
Do Method
GroupBy Method
Let Method
MaxBy Method
Merge Method
MinBy Method
OnErrorResumeNext Method
Prune Method
Publish Method
Repeat Method
Replay Method
Retry Method
Sample Method
Select Method
StartWith Method
Subscribe Method
Take Method
Throttle Method
TimeInterval Method
Timeout Method
Timestamp Method
Where Method
GroupedObservable Properties
Key Property
IObservable Interface
IObservable Methods
Subscribe Method
IObserver Interface
IObserver Methods
OnCompleted Method
OnError Method
OnNext Method
ISubject Interface
ISubject Methods
List Class
List Constructor
List Constructor
List Constructor (FuncObjectObjectBoolean)
List Methods
Add Method
Clear Method
GetCount Method
GetItem Method
IndexOf Method
Remove Method
RemoveAt Method
SetItem Method
ToArray Method
MutableDisposable Class
MutableDisposable Constructor
MutableDisposable Methods
Dispose Method
Get Method
Replace Method
Notification Class
Notification Constructor
Notification Constructor (String)
Notification Constructor (String, Object)
Notification Methods
Accept Method
Any Method
BufferWithCount Method
BufferWithTime Method
BufferWithTimeOrCount Method
Catch Method
Concat Method
Contains Method
Delay Method
DistinctUntilChanged Method
Do Method
GroupBy Method
Let Method
MaxBy Method
Merge Method
MinBy Method
OnErrorResumeNext Method
Prune Method
Publish Method
Repeat Method
Replay Method
Retry Method
Sample Method
Select Method
StartWith Method
Subscribe Method
Take Method
Throttle Method
TimeInterval Method
Timeout Method
Timestamp Method
Where Method
Notification Properties
Kind Property
Value Property
Observable Class
Observable Constructor
Observable Methods
Aggregate Method
Aggregate1 Method
All Method
Amb Method
Amb Method (Observable)
Amb Method (Observable, Observable)
Amb Method (Observable, Observable, Observable)
Amb Method (Observable, Observable, Observable, Observable)
And Method
Any Method
Any Method
Any Method (FuncObjectBoolean)
AsObservable Method
Average Method
BufferWithCount Method
BufferWithCount Method (Int32)
BufferWithCount Method (Int32, Int32)
BufferWithTime Method
BufferWithTime Method (Int32)
BufferWithTime Method (Int32, Int32)
BufferWithTime Method (Int32, Int32, Scheduler)
BufferWithTimeOrCount Method
BufferWithTimeOrCount Method (Int32, Int32)
BufferWithTimeOrCount Method (Int32, Int32, Scheduler)
Case Method
Case Method (FuncObservable, )
Case Method (FuncObservable, , Observable)
Case Method (FuncObservable, , Observable, Scheduler)
Catch Method
Catch Method (Observable)
Catch Method (Observable[])
Catch Method (Observable, Observable)
Catch Method (Observable[], Scheduler)
Catch Method (Observable, Observable, Observable)
Catch Method (Observable, Observable, Observable, Observable)
CombineLatest Method
Concat Method
Concat Method (Observable)
Concat Method (Observable[])
Concat Method (Observable, Observable)
Concat Method (Observable[], Scheduler)
Concat Method (Observable, Observable, Observable)
Concat Method (Observable, Observable, Observable, Observable)
Contains Method
Contains Method (Object)
Contains Method (Object, FuncObjectObjectBoolean)
Count Method
Create Method
CreateWithDisposable Method
Defer Method
Delay Method
Delay Method (Int32)
Delay Method (Int32, Scheduler)
Dematerialize Method
DistinctUntilChanged Method
DistinctUntilChanged Method
DistinctUntilChanged Method (FuncObjectObject)
DistinctUntilChanged Method (FuncObjectObject, FuncObjectObjectBoolean)
Do Method
Do Method (Observer)
Do Method (ActionObject)
Do Method (ActionObject, ActionObject)
Do Method (ActionObject, ActionObject, Action)
DoWhile Method
Empty Method
Empty Method
Empty Method (Scheduler)
Final Method
Finally Method
For Method
ForkJoin Method
ForkJoin Method (Observable, Observable)
ForkJoin Method (Observable, Observable, Observable)
ForkJoin Method (Observable, Observable, Observable, Observable)
ForkJoin Method (Observable, Observable, Observable, Observable, Observable)
FromArray Method
FromArray Method (Object[])
FromArray Method (Object[], Scheduler)
FromDOMEvent Method
FromDOMEvent Method (, String)
FromDOMEvent Method (, String)
FromDOMEvent Method (, String)
FromHtmlEvent Method
FromHtmlEvent Method (, String)
FromHtmlEvent Method (, String)
FromHtmlEvent Method (, String)
FromIEEvent Method
FromIEEvent Method (, String)
FromIEEvent Method (, String)
FromIEEvent Method (, String)
Generate Method
Generate Method (FuncObject, FuncObjectBoolean, FuncObjectObject, FuncObjectObject)
Generate Method (FuncObject, FuncObjectBoolean, FuncObjectObject, FuncObjectObject, Scheduler)
GenerateWithTime Method
GenerateWithTime Method (FuncObject, FuncObjectBoolean, FuncObjectObject, FuncObjectObject, FuncObjectInt32)
GenerateWithTime Method (FuncObject, FuncObjectBoolean, FuncObjectObject, FuncObjectObject, FuncObjectInt32, Scheduler)
GroupBy Method
GroupBy Method (FuncObjectObject)
GroupBy Method (FuncObjectObject, FuncObjectObject)
GroupBy Method (FuncObjectObject, FuncObjectObject, FuncObjectString)
If Method
Interval Method
Interval Method (Int32)
Interval Method (Int32, Scheduler)
IsEmpty Method
Join Method
Join Method (Plan)
Join Method (Plan, Plan)
Join Method (Plan, Plan, Plan)
Join Method (Plan, Plan, Plan, Plan)
Join Method (Plan, Plan, Plan, Plan, Plan)
Join Method (Plan, Plan, Plan, Plan, Plan, Plan)
Join Method (Plan, Plan, Plan, Plan, Plan, Plan, Plan)
Join Method (Plan, Plan, Plan, Plan, Plan, Plan, Plan, Plan)
Let Method
Let Method (FuncObservableObservable)
Let Method (FuncObservableObservable, FuncISubject)
Let Method (Object, FuncObjectObservable)
Materialize Method
Max Method
MaxBy Method
MaxBy Method (FuncObjectObject)
MaxBy Method (FuncObjectObject, FuncObjectObjectInt32)
Merge Method
Merge Method (Observable)
Merge Method (Observable[])
Merge Method (Observable, Observable)
Merge Method (Observable[], Scheduler)
Merge Method (Observable, Observable, Observable)
Merge Method (Observable, Observable, Observable, Observable)
MergeObservable Method
Min Method
MinBy Method
MinBy Method (FuncObjectObject)
MinBy Method (FuncObjectObject, FuncObjectObjectInt32)
Never Method
OnErrorResumeNext Method
OnErrorResumeNext Method (Observable)
OnErrorResumeNext Method (Observable[])
OnErrorResumeNext Method (Observable, Observable)
OnErrorResumeNext Method (Observable[], Scheduler)
OnErrorResumeNext Method (Observable, Observable, Observable)
OnErrorResumeNext Method (Observable, Observable, Observable, Observable)
Prune Method
Prune Method
Prune Method (FuncObservableObservable)
Prune Method (FuncObservableObservable, Scheduler)
Publish Method
Publish Method
Publish Method (FuncObservableObservable)
Range Method
Range Method (Int32, Int32)
Range Method (Int32, Int32, Scheduler)
RemoveInterval Method
RemoveTimestamp Method
Repeat Method
Repeat Method
Repeat Method (Int32)
Repeat Method (Object)
Repeat Method (Int32, Scheduler)
Repeat Method (Object, Int32)
Repeat Method (Object, Int32, Scheduler)
Replay Method
Replay Method
Replay Method (FuncObservableObservable)
Replay Method (FuncObservableObservable, Int32)
Replay Method (FuncObservableObservable, Int32, Int32)
Replay Method (FuncObservableObservable, Int32, Int32, Scheduler)
Retry Method
Retry Method
Retry Method (Int32)
Retry Method (Int32, Scheduler)
Return Method
Return Method (Object)
Return Method (Object, Scheduler)
Sample Method
Sample Method (Int32)
Sample Method (Int32, Scheduler)
Scan Method
Scan0 Method
Scan1 Method
Select Method
Select Method (FuncObjectInt32Object)
Select Method (FuncObjectObject)
SelectMany Method
Skip Method
SkipLast Method
SkipUntil Method
SkipWhile Method
Start Method
Start Method (Action)
Start Method (ActionObject)
Start Method (FuncObject)
Start Method (FuncObjectArrayObject)
Start Method (FuncObjectObject)
Start Method (Action, Scheduler)
Start Method (Action, Object)
Start Method (ActionObject, Scheduler)
Start Method (ActionObject, Object)
Start Method (FuncObject, Scheduler)
Start Method (FuncObject, Object)
Start Method (FuncObjectArrayObject, Scheduler)
Start Method (FuncObjectArrayObject, Object)
Start Method (FuncObjectObject, Scheduler)
Start Method (FuncObjectObject, Object)
Start Method (Action, Object, Scheduler)
Start Method (Action, Object, Object[])
Start Method (ActionObject, Object, Scheduler)
Start Method (ActionObject, Object, Object[])
Start Method (FuncObject, Object, Scheduler)
Start Method (FuncObject, Object, Object[])
Start Method (FuncObjectArrayObject, Object, Scheduler)
Start Method (FuncObjectArrayObject, Object, Object[])
Start Method (FuncObjectObject, Object, Scheduler)
Start Method (FuncObjectObject, Object, Object[])
Start Method (Action, Object, Object[], Scheduler)
Start Method (ActionObject, Object, Object[], Scheduler)
Start Method (FuncObject, Object, Object[], Scheduler)
Start Method (FuncObjectArrayObject, Object, Object[], Scheduler)
Start Method (FuncObjectObject, Object, Object[], Scheduler)
StartWith Method
StartWith Method (Object)
StartWith Method (Object[])
StartWith Method (Object, Scheduler)
StartWith Method (Object[], Scheduler)
Subscribe Method
Subscribe Method
Subscribe Method (IObserver)
Subscribe Method (ActionObject)
Subscribe Method (ActionObject, ActionObject)
Subscribe Method (ActionObject, ActionObject, Action)
Sum Method
Switch Method
Take Method
Take Method (Int32)
Take Method (Int32, Scheduler)
TakeLast Method
TakeUntil Method
TakeWhile Method
Then Method
Throttle Method
Throttle Method (Int32)
Throttle Method (Int32, Scheduler)
Throw Method
Throw Method (Object)
Throw Method (Object, Scheduler)
TimeInterval Method
TimeInterval Method
TimeInterval Method (Scheduler)
Timeout Method
Timeout Method (Int32)
Timeout Method (Int32, Observable)
Timeout Method (Int32, Scheduler)
Timeout Method (Int32, Observable, Scheduler)
Timer Method
Timer Method (Int32)
Timer Method (Int32, Int32)
Timer Method (Int32, Int32, Scheduler)
Timestamp Method
Timestamp Method
Timestamp Method (Scheduler)
ToAsync Method
ToAsync Method (Action)
ToAsync Method (ActionObject)
ToAsync Method (FuncObject)
ToAsync Method (FuncObjectArrayObject)
ToAsync Method (FuncObjectObject)
ToAsync Method (Action, Scheduler)
ToAsync Method (ActionObject, Scheduler)
ToAsync Method (FuncObject, Scheduler)
ToAsync Method (FuncObjectArrayObject, Scheduler)
ToAsync Method (FuncObjectObject, Scheduler)
Using Method
Where Method
Where Method (FuncObjectBoolean)
Where Method (FuncObjectInt32Boolean)
While Method
XmlHttpRequest Method
XmlHttpRequest Method (XmlHttpRequestDetails)
XmlHttpRequest Method (String)
Zip Method
Observer Class
Observer Constructor
Observer Constructor (ActionObject)
Observer Constructor (ActionObject, ActionObject)
Observer Constructor (ActionObject, ActionObject, Action)
Observer Methods
AsObserver Method
Create Method
Create Method (ActionObject)
Create Method (ActionObject, ActionObject)
Create Method (ActionObject, ActionObject, Action)
OnCompleted Method
OnError Method
OnNext Method
Pattern Class
Pattern Methods
And Method
Then Method
Plan Class
Plan Methods
RefCountDisposable Class
RefCountDisposable Constructor
RefCountDisposable Methods
Dispose Method
GetDisposable Method
ReplaySubject Class
ReplaySubject Constructor
ReplaySubject Constructor (Int32, Int32)
ReplaySubject Constructor (Int32, Int32, Scheduler)
ReplaySubject Methods
Any Method
BufferWithCount Method
BufferWithTime Method
BufferWithTimeOrCount Method
Catch Method
Concat Method
Contains Method
Delay Method
DistinctUntilChanged Method
Do Method
GroupBy Method
Let Method
MaxBy Method
Merge Method
MinBy Method
OnCompleted Method
OnError Method
OnErrorResumeNext Method
OnNext Method
Prune Method
Publish Method
Repeat Method
Replay Method
Retry Method
Sample Method
Select Method
StartWith Method
Subscribe Method
Take Method
Throttle Method
TimeInterval Method
Timeout Method
Timestamp Method
Where Method
Scheduler Class
Scheduler Constructor
Scheduler Methods
Now Method
Schedule Method
ScheduleRecursive Method
ScheduleRecursiveWithTime Method
ScheduleWithTime Method
Scheduler Properties
CurrentThread Property
Immediate Property
Timeout Property
Subject Class
Subject Constructor
Subject Constructor
Subject Constructor (Scheduler)
Subject Methods
Any Method
BufferWithCount Method
BufferWithTime Method
BufferWithTimeOrCount Method
Catch Method
Concat Method
Contains Method
Delay Method
DistinctUntilChanged Method
Do Method
GroupBy Method
Let Method
MaxBy Method
Merge Method
MinBy Method
OnCompleted Method
OnError Method
OnErrorResumeNext Method
OnNext Method
Prune Method
Publish Method
Repeat Method
Replay Method
Retry Method
Sample Method
Select Method
StartWith Method
Subscribe Method
Take Method
Throttle Method
TimeInterval Method
Timeout Method
Timestamp Method
Where Method
XmlHttpRequestDetails Class
XmlHttpRequestDetails Constructor
XmlHttpRequestDetails Methods
XmlHttpRequestDetails Properties
Headers Property
Method Property
Password Property
Url Property
User Property
System Namespace
Action Class
Action Constructor
Action Methods
Invoke Method
ActionAction Class
ActionAction Constructor
ActionAction Methods
Invoke Method
ActionActionInt32 Class
ActionActionInt32 Constructor
ActionActionInt32 Methods
Invoke Method
ActionInt32 Class
ActionInt32 Constructor
ActionInt32 Methods
Invoke Method
ActionObject Class
ActionObject Constructor
ActionObject Methods
Invoke Method
FuncBoolean Class
FuncBoolean Constructor
FuncBoolean Methods
Invoke Method
FuncIDisposable Class
FuncIDisposable Constructor
FuncIDisposable Methods
Invoke Method
FuncIDisposableObservable Class
FuncIDisposableObservable Constructor
FuncIDisposableObservable Methods
Invoke Method
FuncISubject Class
FuncISubject Constructor
FuncISubject Methods
Invoke Method
FuncObject Class
FuncObject Constructor
FuncObject Methods
Invoke Method
FuncObjectArrayObject Class
FuncObjectArrayObject Constructor
FuncObjectArrayObject Methods
Invoke Method
FuncObjectArrayObservable Class
FuncObjectArrayObservable Constructor
FuncObjectArrayObservable Methods
Invoke Method
FuncObjectBoolean Class
FuncObjectBoolean Constructor
FuncObjectBoolean Methods
Invoke Method
FuncObjectInt32 Class
FuncObjectInt32 Constructor
FuncObjectInt32 Methods
Invoke Method
FuncObjectInt32Boolean Class
FuncObjectInt32Boolean Constructor
FuncObjectInt32Boolean Methods
Invoke Method
FuncObjectInt32Object Class
FuncObjectInt32Object Constructor
FuncObjectInt32Object Methods
Invoke Method
FuncObjectObject Class
FuncObjectObject Constructor
FuncObjectObject Methods
Invoke Method
FuncObjectObjectBoolean Class
FuncObjectObjectBoolean Constructor
FuncObjectObjectBoolean Methods
Invoke Method
FuncObjectObjectInt32 Class
FuncObjectObjectInt32 Constructor
FuncObjectObjectInt32 Methods
Invoke Method
FuncObjectObjectObject Class
FuncObjectObjectObject Constructor
FuncObjectObjectObject Methods
Invoke Method
FuncObjectObservable Class
FuncObjectObservable Constructor
FuncObjectObservable Methods
Invoke Method
FuncObjectString Class
FuncObjectString Constructor
FuncObjectString Methods
Invoke Method
FuncObservable Class
FuncObservable Constructor
FuncObservable Methods
Invoke Method
FuncObservableObservable Class
FuncObservableObservable Constructor
FuncObservableObservable Methods
Invoke Method
FuncObserverAction Class
FuncObserverAction Constructor
FuncObserverAction Methods
Invoke Method
FuncObserverIDisposable Class
FuncObserverIDisposable Constructor
FuncObserverIDisposable Methods
Invoke Method
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