C#生成sitemap站点地图的方法

namespace Voodoo.other.SEO
{
/// <summary>
/// 生成站点地图sitemap
/// (c) http://aizr.net
/// </summary>
public class SiteMap
{
public List<PageInfo> url
{
get;
set;
}

/// <summary>
/// 生成SiteMap字符串
/// </summary>
/// <returns></returns>
public string GenerateSiteMapString()
{
StringBuilder sb = new StringBuilder();
sb.AppendLine(“<?xml version=\”1.0\” encoding=\”UTF-8\”?> “);
sb.AppendLine(“<urlset xmlns=\”http://www.sitemaps.org/schemas/sitemap/0.9\”> “);

foreach (PageInfo pi in url)
{
sb.AppendLine(“<url>”);
sb.AppendLine(string.Format(“<loc>{0}</loc>”,pi.loc));
sb.AppendLine(string.Format(“<lastmod>{0}</lastmod> “, pi.lastmod.ToString(“yyyy-MM-dd”)));
sb.AppendLine(string.Format(“<changefreq>{0}</changefreq> “, pi.changefreq));
sb.AppendLine(string.Format(“<priority>{0}</priority> “,pi.priority));
sb.AppendLine(“</url>”);
}

sb.AppendLine(“</urlset>”);
return sb.ToString();
}

/// <summary>
/// 保存Site文件
/// </summary>
/// <param name=”FilePath”>路径</param>
public void SaveSiteMap(string FilePath)
{
Voodoo.IO.File.Write(FilePath, GenerateSiteMapString());//保存在指定目录下
}
}

public class PageInfo
{
/// <summary>
/// 网址
/// </summary>
public string loc { get; set; }

/// <summary>
/// 最后更新时间
/// </summary>
public DateTime lastmod { get; set; }

/// <summary>
/// 更新频繁程度
/// </summary>
public string changefreq{get;set;}

/// <summary>
/// 优先级，0-1
/// </summary>
public string priority { get; set; }
}
}