asp.net web page 301重定向

@{

    var domain = "www." + helpers.Domain();

    var host = Request.Url.Host;

    var AbsolutePath = Request.Url.AbsolutePath;

    if (domain != host)

    {

        Response.Status = "301 Moved Permanently";

        Response.AddHeader("Location", "http://www.mastersws.com" + AbsolutePath);

    }

}

註釋：爲了兼容ie，帶www的爲200 ，非www爲301。 同時也避免了本身跳轉本身。