How to generate a dynamic sitemap in asp.net?

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<?xml version="1.0" encoding="UTF-8" ?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
</urlset>

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protected List<string> GetProductUrls()
{
    List<string> urls = new List<string>();
    // Code to retrieve the URLs of products from a database
    // Add each URL to the urls list
    urls.Add("https://example.com/products/1");
    urls.Add("https://example.com/products/2");
    urls.Add("https://example.com/products/3");
    return urls;
}

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protected void Page_Load(object sender, EventArgs e)
{
    Response.ContentType = "text/xml";
    List<string> urls = GetProductUrls();
    XmlDocument xml = new XmlDocument();
    XmlElement root = xml.CreateElement("urlset", "http://www.sitemaps.org/schemas/sitemap/0.9");
    foreach (string url in urls)
    {
        XmlElement elem = xml.CreateElement("url", "http://www.sitemaps.org/schemas/sitemap/0.9");
        XmlElement loc = xml.CreateElement("loc", "http://www.sitemaps.org/schemas/sitemap/0.9");
        loc.InnerText = url;
        elem.AppendChild(loc);
        root.AppendChild(elem);
    }
    xml.AppendChild(root);
    xml.Save(Response.OutputStream);
}