1、Settings.settings

2、app.config

**引用头**
using System.Configuration; 

**读取**
string strPath = ConfigurationManager.AppSettings["Path"]; 

**写入**
Configuration cfa = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None); 
cfa.AppSettings.Settings["NAME"].Value = "WANGLICHAO"; 
cfa.Save(); 

**文件**
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <appSettings>
    <add key="Path" value="D:\"/>
    <add key="NAME" value="123"/>
  </appSettings>
</configuration>