public static string successPage(string authCode, string accessToken, OIDCIdToken idToken, OIDCUserInfoResponseMessage userInfoResponse) { string stringIdToken = idToken.serializeToJsonString(); string userInfoString = userInfoResponse.serializeToJsonString(); String successPage = File.ReadAllText(Path.Combine(Client.ROOT_PATH, "success_page.html")); return(String.Format(successPage, authCode, accessToken, stringIdToken, userInfoString)); }