.Net配置文件读取及修改方法封装（未加密）

  1 using System;
  2 using System.Collections.Generic;
  3 using System.Linq;
  4 using System.Text;
  5 using System.Configuration;
  6 
  7 namespace WPFControlsDemo.Control
  8 {
  9     /// <summary>
 10     /// 配置文件帮助类
 11     /// </summary>
 12     public class ConfigHelper
 13     {
 14         #region ConnectionStrings
 15 
 16         /// <summary>
 17         /// 根据连接串名字connectionName返回数据连接字符串
 18         /// </summary>
 19         /// <param name="connectionName">连接串名字</param>
 20         /// <returns>数据连接字符串</returns>
 21         private static string GetConnectionStringsConfig(string connectionName)
 22         {
 23             string connectionString = ConfigurationManager.ConnectionStrings[connectionName].ToString();
 24             return connectionString;
 25         }
 26 
 27         /// <summary>
 28         /// 更新连接字符串
 29         /// </summary>
 30         /// <param name="newName">连接字符串名称</param>
 31         /// <param name="newConString">连接字符串内容</param>
 32         /// <param name="newProviderName">数据提供程序名称</param>
 33         private static void UpdateConnectionStringConfig(string newName, string newConString, string newProviderName)
 34         {
 35             //记录该连接字符串是否已经存在
 36             bool isModified = false;
 37             //如果要更改的连接字符串已经存在
 38             if (ConfigurationManager.ConnectionStrings[newName] != null)
 39             {
 40                 isModified = true;
 41             }
 42 
 43             //新建一个连接字符串实例
 44             ConnectionStringSettings mySettings = new ConnectionStringSettings(newName, newConString, newProviderName);
 45             Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
 46 
 47             //如果连接串已存在，首先删除它
 48             if (isModified)
 49             {
 50                 config.ConnectionStrings.ConnectionStrings.Remove(newName);
 51             }
 52             //将新的连接串添加到配置文件
 53             config.ConnectionStrings.ConnectionStrings.Add(mySettings);
 54             //保存对配置文件所做的更改
 55             config.Save(ConfigurationSaveMode.Modified);
 56             //强制重新载入配置文件的ConnectionStrings配置节
 57             ConfigurationManager.RefreshSection("ConnectionStrings");
 58         }
 59 
 60         #endregion
 61 
 62         #region AppStrings
 63 
 64         /// <summary>
 65         /// 返回config文件中的appSettings配置节的value项
 66         /// </summary>
 67         /// <param name="strKey">appSettings配置节关键字</param>
 68         /// <returns>APPSettings配置节值</returns>
 69         private static string GetAppConfig(string strKey)
 70         {
 71             foreach (string key in ConfigurationManager.AppSettings)
 72             {
 73                 if (key == strKey)
 74                 {
 75                     return ConfigurationManager.AppSettings[strKey];
 76                 }
 77             }
 78 
 79             return null;
 80         }
 81 
 82         /// <summary>
 83         /// 在config文件中appSettings配置节增加一对键，值对
 84         /// </summary>
 85         /// <param name="newKey"></param>
 86         /// <param name="newValue"></param>
 87         private static void UpdateAppConfig(string newKey, string newValue)
 88         {
 89             bool isModified = false;
 90             foreach (string key in ConfigurationManager.AppSettings)
 91             {
 92                 if (key == newKey)
 93                 {
 94                     isModified = true;
 95                 }
 96             }
 97             //打开配置文件
 98             Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
 99             //删除已存在的节点
100             if (isModified)
101             {
102                 config.AppSettings.Settings.Remove(newKey);
103             }
104             //增加appSettings节点
105             config.AppSettings.Settings.Add(newKey, newValue);
106             //保存配置文件
107             config.Save(ConfigurationSaveMode.Modified);
108             //强制刷新
109             ConfigurationManager.RefreshSection("appSettings");
110         }
111 
112         #endregion
113     }
114 }