AnyTypeExtensions.PollValues.T. Method (IAdsConnection, ISymbol, IObservable.Unit., Func.Exception, T.)

Polls the symbol values on timepoints where the polling observable streams data / triggers

Namespace:  TwinCAT.Ads.Reactive
Assembly:  TwinCAT.Ads.Reactive (in TwinCAT.Ads.Reactive.dll) Version: 6.0.328+39e3229

Syntax

C#

public static IObservable<T> PollValues<T>(
    this IAdsConnection connection,
    ISymbol symbol,
    IObservable<Unit> trigger,
    Func<Exception, T>? errorHandler
)

Parameters

connection

Type: TwinCAT.Ads.IAdsConnection
The connection.

symbol

Type: TwinCAT.TypeSystem.ISymbol
The symbol.

trigger

Type: System.IObservable.Unit.
The Polling trigger

errorHandler

Type: System.Func.Exception, T.
The error handler.

Type Parameters

T

The ANY_TYPE compatible .NET Type.

Return Value

Type: IObservable.T.
IObservable<System.Object>.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IAdsConnection. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

Reference

AnyTypeExtensions Class

PollValues Overload

TwinCAT.Ads.Reactive Namespace