Master Page Path (MasterPage 相对路径)

写一个页面基类BasePage.cs，其它Aspx继承此BasePage,实现将"~"路径转换成客户端能识别的绝对路径。
如：~/admin/Default.aspx 将被自动转换成 domain/admin/Default.aspx




代码如下：

    public class BasePage : System.Web.UI.Page
    {
         protected override void Render(HtmlTextWriter writer)
        {
            StringWriter stringWriter = new StringWriter();
            HtmlTextWriter htmlWriter = new HtmlTextWriter(stringWriter);
            base.Render(htmlWriter);
            htmlWriter.Flush();
            htmlWriter.Close();
            string html = stringWriter.ToString();

            #region 转换相对路径
            MatchCollection collection = Regex.Matches(html, "<(a|link|img|script|input|form).[^>]*(href|src|action)=(\"|'|)(.[^\"']*)(\"|'|)[^>]*>", RegexOptions.IgnoreCase);

            foreach (Match match in collection)
            {
                string url = match.Groups[match.Groups.Count - 2].Value;
                if (url.IndexOf("~") != -1)
                {
                    string newurl = this.Page.ResolveUrl(url);
                    html = html.Replace(url, newurl);
                }
            }
            #endregion
            writer.Write(html);
        }
   }