XmlTextWriter(stream, Encoding)的时候stream始终为空，大家帮忙看看。
System.IO.MemoryStream stream = new System.IO.MemoryStream();
writer = new XmlTextWriter(stream, Encoding);
writer.WriteRaw(xmlStandard);
这时候看stream.Length还是0，xmlStandard内有字符，把writer = new XmlTextWriter(textwriter);以后能正常输出，各位看看我忽略了哪儿了？
[解决办法]
Encoding 是什么编码?
[解决办法]
http://dotnet.aspx.cc/article/04bb9308-b32e-4efd-85c6-1cac83dda93f/read.aspx
[解决办法]
===〉
Stringbuilder sb = new ....
StringWriter sw = new StringWriter( sb );
writer = new XmlTextWriter( sw );
..
Response.Write( sb.ToString() )
至于编码可以通过Web.config 或 Response.AddHeader控制
