c# 配置文件之configSections配置(三）

使用IConfigurationSectionHandler配置configSections

·步骤1：定义一个实体类

 using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;

 namespace ConsoleApplication1
 {
     /// <summary>
     /// 说明:
     /// 创建日期：2016/10/27 8:54:11
     /// 创建人：曹永承
     /// </summary>
     public class Conn
     {
         public string DataBase { get; set; }

         public string Server { get; set; }

         public string UserId { get; set; }

         public string Password { get; set; }

         public override string ToString()
         {
             return string.Format("server={0};database={1};user id={2};password={3}", Server, DataBase, UserId, Password);
         }
     }
 }

步骤2：定义一个ConnSectionHandler类实现IConfigurationSectionHandler接口

 using System.Configuration;
 using System.Xml;

 namespace ConsoleApplication1.config
 {
     /// <summary>
     /// 说明:
     /// 创建日期：2016/10/27 8:52:35
     /// 创建人：曹永承
     /// </summary>
     public class ConnSectionHandler : IConfigurationSectionHandler
     {
         public object Create(object parent, object configContext, XmlNode section)
         {
             Conn conn = new Conn();

             if (section != null)
             {
                 foreach (XmlNode node in section.ChildNodes)
                 {
                     switch (node.Name)
                     {
                         case "server":
                             conn.Server = node.SelectSingleNode("@value").InnerText;
                             break;
                         case "database":
                             conn.DataBase = node.SelectSingleNode("@value").InnerText;
                             break;
                         case "userid":
                             conn.UserId = node.SelectSingleNode("@value").InnerText;
                             break;
                         case "password":
                             conn.Password = node.SelectSingleNode("@value").InnerText;
                             break;
                     }

                 }
             }

             return conn;
         }
     }
 }

步骤3：配置xml

 <configSections>
   <section name="conn" type="ConsoleApplication1.config.ConnSectionHandler,ConsoleApplication1"/>
 </configSections>
 <conn>
   <server value="(local)"/>
   <database value="testDB"/>
   <userid value="sa"/>
   <password value="123456"/>
 </conn>

步骤4：测试代码

 Conn conn = ConfigurationManager.GetSection("conn") as Conn ;
 Console.WriteLine(conn);
 Console.ReadKey();

输出结果：