怎样将以上格式的xml 读取成string？
我想用C＃读取xml 文件，存成一个txt 文档。
<grade>
<Class className="one">
<Column StudentName="heery" score="90" subject="chinese" > </Column>
<Column StudentName="jim" score="75" subject="math" > </Column>
<Column StudentName="nancy" score="90" subject="chinese" > </Column>
...................
</Class>

<Class className="two">
<Column StudentName="mike" score="90" subject="chinese" > </Column>
<Column StudentName="lily" score="75" subject="math" > </Column>
<Column StudentName="rose" score="90" subject="chinese" > </Column>
...................
</Class>
</grade>
怎样将以上格式的xml 读取成string？

[解决办法]
这是将xml文件存入数据库中:

C# code

private void SaveDocument()        {            SqlConnection cn = new SqlConnection(@"连接字符串");            FileInfo fi = new FileInfo(@"C:\200801110040004.xml");            FileStream fs = fi.OpenRead();            byte[] bytes = new byte[fs.Length];            fs.Read(bytes, 0, Convert.ToInt32(fs.Length));            fs.close();            SqlCommand cm = new SqlCommand();            cm.Connection = cn;            cm.CommandType = CommandType.Text;            cm.CommandText = "insert into  FileTable ( FileStr) values(@file)";            SqlParameter spFile = new SqlParameter("@file", SqlDbType.Image);            spFile.Value = bytes;            cm.Parameters.Add(spFile);            cn.Open();            cm.ExecuteNonQuery();            cn.Close();        }
[解决办法]
处理应该用xmldocument+xpath把，最后保存的时候直接更改文件后缀即可
xml是可以用文本格式才存放的
  xmldocument doc=new xmldocument();
  doc.load(@"d:\fsj.xml");
   
  xmlnode root=doc.documentElement;
  root.selectnodes/selectSinglenode();
  ... ...
  处理
  doc.save(@"c:\fsj.txt")