textbox 绑定到 app.config的问题

Question

如何让程序在退出时保存textbox.text到app.config中,textbox.text已经绑定到app.config?

Answer 1

修改config文件的类，你可以增加节点，用节点的value来保存内容using System;
using System.Configuration;
namespace Heaven.Pub
{
    /// <summary>
    /// 配置文件的类型
    /// </summary>
    public enum ConfigType
    {
        /// <summary>
        /// 网站的配置文件
        /// </summary>
        WebConfig=0,
        /// <summary>
        /// 应用程序的配置文件
        /// </summary>
        AppConfig=1
    }    public class ConfigurationOperator
    {
        private Configuration config;
        private ConfigType configType;
        private string configPath;        /// <summary>
        /// 配置文件
        /// </summary>
        public Configuration Config
        {
            set
            {
                config = value;
            }
            get
            {
                return config;
            }
        }        /// <summary>
        /// 
        /// </summary>
        /// <param name="configType">配置文件类型</param>
        public ConfigurationOperator(ConfigType configType)
        {
            this.configType = configType;
            if (configType == ConfigType.WebConfig)
            {
                configPath = System.Web .HttpContext.Current.Request.ApplicationPath;
            }
            else
            {
                configPath = System.Windows .Forms .Application.ExecutablePath;
            }
            Initialize();
        }        /// <summary>
        /// 
        /// </summary>
        /// <param name="configPath">配置文件路径</param>
        /// <param name="configType">配置文件类型</param>
        public ConfigurationOperator(string configPath, ConfigType configType)
        {
            this.configPath = configPath;
            this.configType = configType;
            Initialize();
        }        private void Initialize()
        {
            if (configType == ConfigType.AppConfig )
            {
                config = System.Configuration .ConfigurationManager.OpenExeConfiguration(configPath);
            }
            else
            {
                config = System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration(configPath);
            }
        }        /// <summary>
        /// 增加appSetting
        /// </summary>
        /// <param name="key">appSetting的关键字</param>
        /// <param name="value">appSetting的值</param>
        public void AddAppSetting(string key, string value)
        {
            AppSettingsSection appSetting = (AppSettingsSection)config.GetSection("appSettings");
            if (appSetting.Settings[key] == null)
            {
                appSetting.Settings.Add(key, value);
            }
            else
            {
                ModifySetting(key, value);
            }
        }        /// <summary>
        /// 修改appSetting
        /// </summary>
        /// <param name="key">appSetting的关键字</param>
        /// <param name="newValue">appSetting的新值</param>
        public void ModifySetting(string key, string newValue)
        {
            AppSettingsSection appSetting = (AppSettingsSection)config.GetSection("appSettings");
            if (appSetting.Settings[key] != null)
            {
                appSetting.Settings[key].Value  = newValue;
            }
            else
            {
                AddAppSetting(key, newValue);
            }
        }        /// <summary>
        /// 增加连接字符串
        /// </summary>
        /// <param name="key">增加的关键字</param>
        /// <param name="connectString">增加的连接字符串</param>
        public void AddConnectString(string key, string connectString)
        {
            ConnectionStringsSection connectionString = (ConnectionStringsSection)config.GetSection("connectionStrings");
            if (connectionString.ConnectionStrings[key] == null)
            {
                ConnectionStringSettings connectionSetting=new ConnectionStringSettings (key,connectString );
                connectionString.ConnectionStrings.Add(connectionSetting);
            }
            else
            {
                ModifySetting(key, connectString);
            }
        }        /// <summary>
        /// 修改连接字符串
        /// </summary>
        /// <param name="key">需要修改的关键字</param>
        /// <param name="newConnectString">新的连接字符串</param>
        public void ModifyConnectString(string key, string newConnectString)
        {
            ConnectionStringsSection connectionString = (ConnectionStringsSection)config.GetSection("connectionStrings");
            if (connectionString.ConnectionStrings[key] != null)
            {
                connectionString.ConnectionStrings[key].ConnectionString  = newConnectString;
            }
            else
            {
                AddConnectString(key, newConnectString);
            }
        }        /// <summary>
        /// 保存配置信息
        /// </summary>
        public void SaveConfig()
        {
            config.Save();
        }
    }
}