C# 操作自定义config文件

示例文件:DB.config

1.读取

1  //先实例化一个ExeConfigurationFileMap对象,把物理地址赋值到它的 ExeConfigFilename 属性中;
2 ExeConfigurationFileMap fileMap = new ExeConfigurationFileMap();
3 fileMap.ExeConfigFilename = @"DB.config";
4  //再调用fileMap 实例化 config , 这样,操作的文件就是db.config文件了,也不会产生副本文件
5 Configuration config = ConfigurationManager.OpenMappedExeConfiguration(fileMap, ConfigurationUserLevel.None);
6 //获取appsettings节点 
7 AppSettingsSection appsection = (AppSettingsSection)config.GetSection("appSettings");
8 string conStrAll = appsection.Settings[ConnectionName].Value;
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2.新增

1 //在appsettings节点中添加元素 
2 appsection.Settings.Add( "addkey1 ",   "key1 's   value "); 
3 appsection.Settings.Add( "addkey2 ",   "key2 's   value "); 
4 config.Save(); 
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3.删除

1 //删除appsettings节点中的元素 
2 appsection.Settings.Remove( "addkey1 "); 
3 config.Save(); 
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4.修改

1 //修改appsettings节点中的元素 
2 appsection.Settings[ "addkey2 "].Value   =   "modify   key2 's   value "; 
3 config.Save(); 
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原文地址:https://www.cnblogs.com/yf2011/p/5025654.html