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Type: Event

Parameters:  String URI String MessageAsJson String MessageAsString



Raised when the WebMessageEnabled setting is set and the top-level document of the top level frame uses javascript postMessage to send a message via the mechanism.

If postMessage is used to send a JSON value, then the string is empty.


You do need to enable the WebMessageEnabled property if you want to process this event.


See also CoreWebView2.WebMessageReceived Event.