window.opener() with Webview2

Question

In the webform, I have used window.opener for opening a new window that acted as a dialog which required user input, and needed to pass information back to the main window. I am trying to embed this in winform using WebView2 control.The NewWindowRequested eventhandler is supporting windows.open() in a new tab (e.handled=true) .But the windows.opener() is not working as expected.Which event handler can I use for implementing this functionality?Thanks in advance!