创建xml

需求：创建一个xml文档，其格式为：

<?xml version="1.0" encoding="gb2312" ?>
<chart caption='个人一年内月度得分统计'   xAxisName='月份' yAxisName='分值' numberPrefix=''>
  <set label='1月' value='14400' />
  <set label='2月' value='19600' />
  <set label='3月' value='24000' />
  <set label='4月' value='15700' />
  <set label='5月' value='14400' />
  <set label='6月' value='19600' />
  <set label='7月' value='24000' />
  <set label='8月' value='15700' />
  <set label='9月' value='14400' />
  <set label='10月' value='19600' />
  <set label='11月' value='24000' />
  <set label='12月' value='15700' />
</chart>

代码：

private string CreatXml(DataTable dt)
    {
        string ss = "";
        try
        {
            XDocument xdoc = new XDocument(new XDeclaration("1.0", "gb2312", "yes"));

            XElement root = new XElement("chart",
                new XAttribute("caption", "个人一年内月度得分统计"),
                new XAttribute("xAxisName", "月份"),
                new XAttribute("yAxisName", "分值"),
                new XAttribute("numberPrefix", "")
           );
            for (int i = 0; i < dt.Rows.Count; i++)
            {
                XElement node = new XElement("set",
                new XAttribute("label", dt.Rows[i]["label"]),
                new XAttribute("value", dt.Rows[i]["value"])
                );
                root.Add(node);
            }

            xdoc.Add(root);
            ss = xdoc.ToString();
        }
        catch (Exception)
        {
            throw;
        }

        return ss;
    }