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I am currently using a visualforce page inside a lightning component.Is there any way to set the parent lightning component attribute from visualforce page or send data to the lightning component from visualforce page?

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The only official mechanism for this sort of communication is the Lightning Message Service.

Note that you cannot directly embed a Visualforce page within an LWC. The best you can do is to use an iframe with the URL for a Visualforce page inside the LWC.

However, since URLs for the two different types of page (lightning vs visuallforce) cannot be programmatically determined within the same context due to a lack of any API to do so, I strongly recommend against such an approach and feel you should simply include both a Visualforce page and an LWC that interacts with that page via LMS in the same Lightning Page. I.e. the components are simply siblings on the page.

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  • Sorry but I don't quite understand, I am trying to use visualforce inside the aura component, not the other way around. – adnan_aust Nov 25 '20 at 2:32
  • Apologies, I initially misread your question. Answer updated. – Phil W Nov 25 '20 at 7:40

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