C#•7mo ago

ChangeToken / PhysicalFileProvider behavior

I have a PhysicalFileProvider watching for file changes like this

var changeToken = _fileProvider.Watch(filter);
ChangeToken.OnChange(
      () => changeToken,
      { var hasChanged = changeToken.HasChanged; }
)

var changeToken = _fileProvider.Watch(filter);
ChangeToken.OnChange(
      () => changeToken,
      { var hasChanged = changeToken.HasChanged; }
)

When writing some content - even a short "Hello", to a file which matches the filter, ChangeToken.OnChange is firing multiple times. Is this the expected behavior and do I have to implement some sort of de-duplication if I want a change handler to be called only once?

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ChangeToken / PhysicalFileProvider behavior