在C# WinForm开发中,如果想要修改AppSettings中的值,发现用下面这个代码并没有成功。
ConfigurationManager.AppSettings.Set(key, value);//修改值,但是没有成功
下面提供可以用的获取、增加、删除、修改appSettings的方法。
public class WinConfigHelper { /// <summary> /// 根据Key取Value值 /// </summary> /// <param name="key"></param> public static string GetValue(string key) { return ConfigurationManager.AppSettings[key].ToString().Trim(); } /// <summary> /// 根据Key修改Value /// </summary> /// <param name="key">要修改的Key</param> /// <param name="value">要修改为的值</param> public static void SetValue(string key, string value) { Configuration cfa = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None); cfa.AppSettings.Settings[key].Value=value; cfa.Save(); ConfigurationManager.RefreshSection("appSettings"); } /// <summary> /// 添加新的Key ,Value键值对 /// </summary> /// <param name="key">Key</param> /// <param name="value">Value</param> public static void Add(string key, string value) { Configuration cfa = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None); cfa.AppSettings.Settings.Add(key, value); cfa.Save(); ConfigurationManager.RefreshSection("appSettings"); } /// <summary> /// 根据Key删除项 /// </summary> /// <param name="key">Key</param> public static void Remove(string key) { Configuration cfa = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None); cfa.AppSettings.Settings.Remove(key); cfa.Save(); ConfigurationManager.RefreshSection("appSettings"); } }
标签:Key,配置文件,ConfigurationManager,C#,AppSettings,cfa,key,string From: https://www.cnblogs.com/rwen/p/17300825.html