response.addheader的相对路径

您需要为刷新头指定一个绝对URL。看一看 this post 显示如何从relative获取绝对URL(可以使用 ResolveServerUrl 显示在那里):

Response.AddHeader("REFRESH", "2;url=" + ResolveServerUrl("~/pages/home.aspx"));

供参考:

/// <summary>
/// This method returns a fully qualified absolute server Url which includes
/// the protocol, server, port in addition to the server relative Url.
/// 
/// Works like Control.ResolveUrl including support for ~ syntax
/// but returns an absolute URL.
/// </summary>
/// <param name="ServerUrl">Any Url, either App relative or fully qualified</param>
/// <param name="forceHttps">if true forces the url to use https</param>
/// <returns></returns>
public static string ResolveServerUrl(string serverUrl, bool forceHttps)
{
    // *** Is it already an absolute Url?
    if (serverUrl.IndexOf("://") > -1)
        return serverUrl;

    // *** Start by fixing up the Url an Application relative Url
    string newUrl = ResolveUrl(serverUrl);

    Uri originalUri = HttpContext.Current.Request.Url;
    newUrl = (forceHttps ? "https" : originalUri.Scheme) + 
             "://" + originalUri.Authority + newUrl;

    return newUrl;
} 

/// <summary>
/// This method returns a fully qualified absolute server Url which includes
/// the protocol, server, port in addition to the server relative Url.
/// 
/// It work like Page.ResolveUrl, but adds these to the beginning.
/// This method is useful for generating Urls for AJAX methods
/// </summary>
/// <param name="ServerUrl">Any Url, either App relative or fully qualified</param>
/// <returns></returns>
public static string ResolveServerUrl(string serverUrl)
{
    return ResolveServerUrl(serverUrl, false);
}