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);

    }

}

注释：为了兼容ie，带www的为200 ，非www为301。 同时也避免了自己跳转自己。