我有这个功能，它始终工作，试试吧。

I have this function, and it always works, try it

public static void callJavascriptFunction(string strScript)
    {

            if (HttpContext.Current == null && HttpContext.Current.Handler is Page) { return; }

            Page currentPage = (Page)HttpContext.Current.Handler;
            ScriptManager.RegisterStartupScript(currentPage,
                                                currentPage.GetType(),
                                                "Funct",
                                                strScript,
                                                true);
    }