ASP.NET中Config文件的读写示例_实用技巧_

 using System.Configuration; namespace pcauto { public static class ConfigHelper { ///
 ///返回*.exe.config文件中appSettings配置节的value项 ///
 /// /// public static string GetAppConfig(string strKey) { string file = System.Windows.Forms.Application.ExecutablePath; Configuration config = ConfigurationManager.OpenExeConfiguration(file); foreach (string key in config.AppSettings.Settings.AllKeys) { if (key == strKey) { return config.AppSettings.Settings[strKey].Value.ToString(); } } return null; } ///
 ///在*.exe.config文件中appSettings配置节增加一对键值对 ///
 /// /// public static void UpdateAppConfig(string newKey, string newValue) { string file = System.Windows.Forms.Application.ExecutablePath; Configuration config = ConfigurationManager.OpenExeConfiguration(file); bool exist = false; foreach (string key in config.AppSettings.Settings.AllKeys) { if (key == newKey) { exist = true; } } if (exist) { config.AppSettings.Settings.Remove(newKey); } config.AppSettings.Settings.Add(newKey, newValue); config.Save(ConfigurationSaveMode.Modified); ConfigurationManager.RefreshSection("appSettings"); } } }

 ConfigHelper.GetAppConfig("testkey")

 ConfigHelper.UpdateAppConfig("testkey", "abc");