Net操作配置文件（Web.config|App.config）通用类

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();