Net操作配置文件（Web.config|App.config）通用类

た入场券 2023-10-17 20:28 6阅读 0赞

**一、Net操作web.config通用类（代码如下）：**

using System;
    using System.Configuration;
    using System.Web;
    using System.Web.Configuration;
    
    
    /// ConfigurationOperator 的摘要说明
    public class ConfigurationOperator : IDisposable
    {
        private Configuration config;
        public ConfigurationOperator()
            : this(HttpContext.Current.Request.ApplicationPath) { }
        public ConfigurationOperator(string path)
        {
            config = WebConfigurationManager.OpenWebConfiguration(path);
        }
    
        /// 设置应用程序配置节点,如果已经存在此节点,则会修改该节点的值,否则添加此节点
        ///
    
        /// 节点名称 
        /// 节点值 
        public void SetAppSetting(string key, string value)
        {
            AppSettingsSection appSetting = (AppSettingsSection)config.GetSection("appSettings");
            if (appSetting.Settings[key] == null)//如果不存在此节点,则添加
            {
                appSetting.Settings.Add(key, value);
            }
            else//如果存在此节点,则修改
            {
                appSetting.Settings[key].Value = value;
            }
        }
        ///
    
        /// 设置数据库连接字符串节点,如果不存在此节点,则会添加此节点及对应的值,存在则修改
        ///
    
        /// 节点名称 
        /// 节点值 
        public void SetConnectionString(string key, string connectionString)
        {
            ConnectionStringsSection connectionSetting = (ConnectionStringsSection)config.GetSection("connectionStrings");
            if (connectionSetting.ConnectionStrings[key] == null)//如果不存在此节点,则添加
            {
                ConnectionStringSettings connectionStringSettings = new ConnectionStringSettings(key, connectionString);
                connectionSetting.ConnectionStrings.Add(connectionStringSettings);
            }
            else//如果存在此节点,则修改
            {
                connectionSetting.ConnectionStrings[key].ConnectionString = connectionString;
            }
        }
        ///
    
        /// 保存所作的修改
        public void Save()
        {
            config.Save();
            config = null;
        }
        public void Dispose()
        {
            if (config != null)
            {
                config.Save();
            }
        }
    }

**二、调用方法：**

// 连接字符串
    string connectionString = string.Format("Data Source={0};Initial Catalog={1};User ID={2};Password={3}; max pool size=150",
        tbx_ip.Text.Trim(), tbx_dbname.Text.Trim(), tbx_username.Text.Trim(), tbx_pwd.Text.Trim());
    
    ConfigurationOperator config = new ConfigurationOperator();
    config.SetConnectionString("defaultConnection", connectionString);
    config.Save();