c# ConfigurationManager

1.读取

ConfigurationManager.AppSettings.Get("Name")

2.添加

自定义文件

Configuration c = ConfigurationManager.OpenExeConfiguration(AppDomain.CurrentDomain.BaseDirectory + "app.config");
AppSettingsSection s = c.GetSection("appSettings") as AppSettingsSection;
s.Settings.Add("Name", "Irelia");
c.SaveAs(AppDomain.CurrentDomain.BaseDirectory + "app.config");

默认文件(*.exe.config)

Configuration c = ConfigurationManager.OpenExeConfiguration( ConfigurationUserLevel.None);
AppSettingsSection s = c.GetSection("appSettings") as AppSettingsSection;
s.Settings.Add("Name", "Irelia");
c.Save();

（注意，试过了，不能自定义section的，将appSetting改成其他节点的名字无法识别，同时，appSetting要添加到最后的节点，要不然读取报错)