xpathnavigator如何给xml文档添加encoding属性？
xmldocument doc = new xmldocument();
xpathnavigator xp = doc.createnavigator();
xp.appendchild( " <root> </root> ");
doc.save( "d:\\books.xml ");

我现在想在创建出的books.xml的第一行加上 <?xml version= "1.0 " encoding= "UTF-8 "?>
该怎么做？

[解决办法]
<?xml version= "1.0 " encoding= "UTF-8 "?> 会自动添加吧