读取xml文件(可执行文件根目录debug)

xml文件格式如下

<?xml version="1.0" encoding="utf-8" ?>
<root>
  <appKey>abcdefg</appKey>
  <appSecret>hijklmn</appSecret>
  <serverUrl>opqrst</serverUrl>
  <accessToken>uvwxyz</accessToken>
</root>

读取格式如下,我是放在构造函数里面

先声明几个私有变量接受

private string SERVER_URL;
private string accessToken;
private string appKey;
private string appSecret; 

            //判断可执行文件下有么有JD_API.xml文件,也就是debug目录下
       if (File.Exists(Application.StartupPath + "\\JD_API.xml"))
       {
           XmlDocument xml = new XmlDocument();
           xml.Load(Application.StartupPath+"\\JD_API.xml");//加载xml文件
           appKey = xml.SelectSingleNode("root/appKey").InnerText;//读取xml节点
           appSecret = xml.SelectSingleNode("root/appSecret").InnerText;
           SERVER_URL = xml.SelectSingleNode("root/serverUrl").InnerText;
           accessToken = xml.SelectSingleNode("root/accessToken").InnerText;
      }