Hi @Ravikumar Sivasamy ,
Welcome to Microsoft Q&A platform and thanks for reaching out.
Unfortunately we do not have an existing feature in ADF that could trigger your pipeline based on new events in Azure File Share. We have event triggers in ADF but that doesn't support Azure File Share.
A workaround could be to use schedule trigger to trigger your pipeline on scheduled intervals.
I would recommend you to please log a feature request in ADF user voice forum: https://feedback.azure.com/forums/270578-data-factory/ and do share the link here so that others can up-vote and comment on your idea which would help to increase the priority of feature implementation.
Here is another similar feedback submitted by other users: Please feel free to up-vote and/or comment on it: https://feedback.azure.com/forums/270578-data-factory/suggestions/36812446-event-based-triggers-if-the-file-arrives-to-on-pre
Hope this info helps. Please let us know if you have further query.
Thank you
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