IEnvironmentVariableService.SubscribeAsync Method
Definition
Important
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Attaches an observer for updates to environment variables. The observer will always receive an initial message with the current environment variables.
public System.Threading.Tasks.Task<IDisposable> SubscribeAsync (IObserver<System.Collections.Generic.IReadOnlyDictionary<string,string>> observer, System.Threading.CancellationToken cancellationToken);abstract member SubscribeAsync : IObserver<System.Collections.Generic.IReadOnlyDictionary<string, string>> * System.Threading.CancellationToken -> System.Threading.Tasks.Task<IDisposable>Public Function SubscribeAsync (observer As IObserver(Of IReadOnlyDictionary(Of String, String)), cancellationToken As CancellationToken) As Task(Of IDisposable)Parameters
- observer
- IObserver<IReadOnlyDictionary<String,String>>
An observer of environment variable changes. The observer is called back with the currently defined environment variables, where the key is the name of the variable.
- cancellationToken
- CancellationToken
A cancellation token to cancel the in-progress invocation.
Returns
A value that may be disposed of to unregister observer from future notifications.