/// <summary>
/// Execute JavaScript code from the javascript parameter in the
/// current top level document rendered in the WebView. This will execute
/// asynchronously and when complete, if a handler is provided in the
/// ExecuteScriptCompletedHandler parameter, its Invoke method will be
/// called with the result of evaluating the provided JavaScript. The result
/// value is a JSON encoded string.
/// If the result is undefined, contains a reference cycle, or otherwise
/// cannot be encoded into JSON, the JSON null value will be returned as the
/// string 'null'. Note that a function that has no explicit return value
/// returns undefined.
/// If the executed script throws an unhandled exception, then the result is
/// also 'null'.
/// This method is applied asynchronously. If the call is made while the
/// webview is on one document, and a navigation occurs after the call is
/// made but before the JavaScript is executed, then the script will not be
/// executed and the handler will be called with E_FAIL for its errorCode
/// parameter.
/// ExecuteScript will work even if IsScriptEnabled is set to FALSE.
/// </summary>
/// <param name="javaScript"></param>
/// <param name="callback"></param>
public void ExecuteScript(string javaScript, Action <ExecuteScriptCompletedEventArgs> callback)
{
if (_webView2WebView == null)
{
return;
}
_webView2WebView.ExecuteScript(javaScript, callback);
}
