C# Asp.NET 生成GOOGLE地图和索引

（1）首先要对内容的特殊字符进行过虑：
C# 代码：
public string res(string partno)
{
partno = partno.Replace("&", "");
partno = partno.Replace("/", "");
partno = partno.Replace("&", "");
return partno;
}
（2）从数据库中获得要生成地图的内容：
C# 代码：
public void getXMLSitemapData(StreamWriter writerFile,int minid,int maxid)
{

SqlConnection mycon = new SqlConnection(ConfigurationManager.ConnectionStrings["conn"].ConnectionString);
string sqlstr = "Select id,name from table where id>'" + minid + "' and id <'" + maxid + "'";//数据库内容语句

SqlCommand cmd = new SqlCommand(sqlstr, mycon);
mycon.Open();
SqlDataReader rdr = cmd.ExecuteReader();
if (rdr.HasRows)
{
while (rdr.Read())
{

writerFile.WriteLine("<url>");
writerFile.WriteLine("<loc>" + "http://www.uni888.com/" + res(rdr[1].ToString())+".html" + "</loc>");
writerFile.WriteLine("<lastmod>" +"2009-04-22"+ "</lastmod>");
writerFile.WriteLine("<changefreq>weekly</changefreq>");
writerFile.WriteLine("<priority>1.0</priority>");
writerFile.WriteLine("</url>");
}
}
rdr.Close();
mycon.Close();
}
(3)创建并写入sitemaps.xml GOOGLE地图
C# 代码：
public void createXMLSitemap(int minid,int maxid,int maps)
{
FileInfo XMLFile = null;
StreamWriter WriteXMLFile = null;
string FilePath = HttpContext.Current.Server.MapPath("sitemap"+maps+".xml");
XMLFile = new FileInfo(FilePath);
WriteXMLFile = XMLFile.CreateText();
//下面两句话必须写，而且不能做任何修改
WriteXMLFile.WriteLine("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
WriteXMLFile.Wri