XML解析失败

[yuanlovechina]

错误如下：

XML 解析失败: 语法错误 (行号: 273, 字符: 27)

将文档重解析为 HTML

错误:document type declaration after content
规范:http://www.w3.org/TR/REC-xml/
270: <!-- lsaquo is proposed but not yet ISO standardized -->
271: <!ENTITY rsaquo "›">
272: <!-- rsaquo is proposed but not yet ISO standardized -->
273: <!ENTITY euro "€">



找不到原因了，各位高手帮我看看吧！

[yuanlovechina]

private void bCoopratePage()
{
string strPage;
Response.ContentType = "text/vnd.wap.wml";
Response.ContentEncoding = System.Text.Encoding.GetEncoding("GB2312");

String strSql = "select scontent from ISingle where sid=1";
DataTable dt = new DataTable();
dt = DataManager.ExecuteQuery(strSql);
strPage = "<?xml version=\"1.0\" encoding=\"GB2312\"?>\r\n";
strPage += "<!DOCTYPE wml PUBLIC \"-//WAPFORUM//DTD WML 1.1//EN\" \"http://www.wapforum.org/DTD/wml_1.1.xml\"><wml>\r\n";
strPage += "\r\n";
strPage += "<card title=\"Cooprate\">";
strPage += "<p>";
if (dt.Rows.Count != 0)
{
strPage += "<span style=\" font-size:10px;\" >【商务合作】</span>\n<br/>";
strPage += "<span style=\" font-size:10px;\" >";
strPage += dt.Rows[0][0].ToString().Trim();
strPage += "</span>\n<br/>";
}
else
{
strPage += "<span style=\" font-size:10px;\" >【商务合作】</span>\n<br/>";
}
strPage += "</p>";
strPage += "<p>";
strPage += "<span style=\" font-size:10px;\" ><a href=\"index.aspx\" method=\"get\">【返回首页】</a></span>\n<br/>";
strPage += "</p>";
strPage += "</card>\r\n";
strPage += "\r\n";
strPage += "</wml>\r\n";
strPage += "\r\n";
Response.Write(strPage);
}