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PollingFileChangeToken Class

Definition

Namespace:
Microsoft.Extensions.FileProviders.Physical
Assembly:
Microsoft.Extensions.FileProviders.Physical.dll
Package:
Microsoft.Extensions.FileProviders.Physical v11.0.0-preview.5.26302.115
Source:
PollingFileChangeToken.cs
Source:
PollingFileChangeToken.cs
Source:
PollingFileChangeToken.cs
Source:
PollingFileChangeToken.cs

Important

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A change token that polls for file system changes.

public ref class PollingFileChangeToken : Microsoft::Extensions::Primitives::IChangeToken
public class PollingFileChangeToken : Microsoft.Extensions.Primitives.IChangeToken
type PollingFileChangeToken = class
 interface IChangeToken
Public Class PollingFileChangeToken
Implements IChangeToken
Inheritance
PollingFileChangeToken
Implements

Remarks

Polling occurs every 4 seconds.

By default, this change token does not raise change callbacks. Callers should watch for HasChanged to turn from false to true. When ActiveChangeCallbacks is true, callbacks registered via RegisterChangeCallback(Action<Object>, Object) will be invoked when the file or directory changes.

Constructors

Name Description
PollingFileChangeToken(FileInfo)

Initializes a new instance of the PollingFileChangeToken class that polls the specified file or directory for changes as determined by LastWriteTimeUtc.

Properties

Name Description
ActiveChangeCallbacks

Gets a value that indicates whether this token will proactively raise callbacks. If false, the token consumer must poll HasChanged to detect changes.
HasChanged

Gets a value that indicates whether the file or directory has changed since the change token was created.

Methods

Name Description
RegisterChangeCallback(Action<Object>, Object)

Registers a callback that will be invoked when the token changes, if ActiveChangeCallbacks is true. If ActiveChangeCallbacks is false, no callback is registered and an empty disposable is returned.

Applies to

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