IChangeToken Interface

Propagates notifications that a change has occured.

Namespace
Microsoft.Extensions.Primitives
Assemblies
  • Microsoft.Extensions.Primitives

Syntax

public interface IChangeToken
interface Microsoft.Extensions.Primitives.IChangeToken

Properties

Microsoft.Extensions.Primitives.IChangeToken.ActiveChangeCallbacks

Indicates if this token will pro-actively raise callbacks. Callbacks are still guaranteed to fire, eventually.

Return type:System.Boolean 
bool ActiveChangeCallbacks { get; }
Microsoft.Extensions.Primitives.IChangeToken.HasChanged

Gets a value that indicates if a change has occured.

Return type:System.Boolean 
bool HasChanged { get; }

Methods

RegisterChangeCallback(System.Action<System.Object>, System.Object)

Registers for a callback that will be invoked when the entry has changed. Microsoft.Extensions.Primitives.IChangeToken.HasChanged MUST be set before the callback is invoked.

Arguments:
  • callback (System.Action<System.Object>) – The System.Action`1 to invoke.
  • state (System.Object) – State to be passed into the callback.
Return type:

System.IDisposable
Returns:

An System.IDisposable that is used to unregister the callback.

 
IDisposable RegisterChangeCallback(Action<object> callback, object state)