比较好用的写日志和xml读写类；
其中的XmlHelper用法如下：
XmlHelper helper = new XmlHelper("XML文件路径");
helper["根节点"]["节点名称"].Text;//可读可写
如果xml的子节点名称一样，属性不一样，用第一个数据就是了。
helper["根节点"]["属性名称"].Text;//可读可写(Better use of write logs and XML reading and writing classes;

The use of XmlHelper is as follows:

XmlHelper helper = new XmlHelper ("XML file path");

Helper[is the root node, the node name "].Text; / / read / write

If the XML's child node name is the same, the attributes are different, and the first data is the same.

Helper[is the root node, the property name].Text; / / read / write)