xml中动态添加节点的问题
现在有一个xml文件如下：
<?xml...>
<configuration>
<appsettings>
<add name= "a1 " value= "192.168.0.1 " active= '是 '> </add>
<add name= "a2 " value= "192.168.0.2 " active= '否 '> </add>
</appsettings>
</configuration>


现在想在文件中动态的添加一个子节点,属性如下:
<add name= "a3 " value= "192.168.0.3 " active= "否 "> </add>
请问如何添加，谢谢!

[解决办法]
http://dev.csdn.net/article/69/69049.shtm