Calling a method on your WebView is simple just call the WebView.InvokeScriptAsync( method , param) (more information on MSDN) and you are good to go. However imagine if you need to send json in the param, how do you send it?
When we are building our string to call with the eval function in javasciprt we will need to have some like this : myJsObject.MyMethode(Paramater1, ,JSON.parse("MyJSONStringFormat")) , when using StringBuilder we just need follow the pattern above.
Here is the code that will help you pass the correct string to your webview:
You can find my sample here