如何检查网址是否在我的ASP.NET应用程序中？

string pattern = @"^https?://([a-z0-9]+\.)+[a-z0-9]+(/.*)?$";

bool isMatch = Regex.IsMatch(url, pattern);

var pageList = new List<string>();
var directory = new DirectoryInfo(Server.MapPath("~"));
var files = directory.GetFiles("*.aspx", SearchOption.AllDirectories);

foreach (var file in files)
{
    pageList.Add(file.Name);
}

string sitemapUrl = "sitemap.xml";
var xmlDocument = new XmlDocument();
xmlDocument.Load(Server.MapPath(sitemapUrl));

foreach (XmlNode node in xmlDocument.SelectNodes("//url/loc"))
{
    string pageUrl = node.InnerText;
    // 检查页面URL是否包含给定的网址
}