如何在使用Umbraco重写时删除querystring

<rewrite>
  <rules>
    <rule name="Remove Query String" stopProcessing="true">
      <match url="(.*)" />
      <conditions>
        <add input="{QUERY_STRING}" pattern="(.+)" />
      </conditions>
      <action type="Redirect" url="{R:1}" appendQueryString="false" />
    </rule>
  </rules>
</rewrite>

protected void Application_BeginRequest(object sender, EventArgs e)
{
    string url = HttpContext.Current.Request.Url.PathAndQuery;
    if (url.Contains("?"))
    {
        HttpContext.Current.Response.Redirect(url.Split('?')[0]);
    }
}