ConfigurationManager.GetSection()方法的使用

GetSection方法读取的是configSections节点,这个节点在web.config配置文件中,它比较特殊,必须放 置于首节点,也就是说,在它之前不能有其它类型的节点。configSections子节点有section和sectionGroup,后者是前者的集 合节点:

<configSections>
        <section name="CustomConfig" type="ConsoleApplication1.CustomConfig, ConsoleApplication1"/>
    </configSections>
    <CustomConfig>
        <Person Name="AAA" Sex="M"/>
        <Person Name="BBB" Sex="F"/>
    </CustomConfig>

 通过对ConfigurationManager.GetSection(...)方法的调用,如果某个类继承IConfigurationSectionHandler接口,那么会触发此接口的Create方法,这样我们就可以做一些事了。

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

namespace ConsoleApplication1
{
    public class CustomConfig : IConfigurationSectionHandler
    {
        public class LoveConfig
        {
            public string Name { get; set; }
            public string Sex { get; set; } 
        } 
        public object Create(object parent, object configContext, XmlNode section)
        { 
            if (section == null)
                return null;
            List<LoveConfig> list = new List<LoveConfig>();
            foreach (XmlNode node in section.ChildNodes)
            {
                if (node.Name.ToLower() == "person")
                {
                    var app = new LoveConfig();
                    app.Name = node.Attributes["Name"].Value;
                    app.Sex = node.Attributes["Sex"].Value; 
                    list.Add(app);
                }
            }
            return list;
        }
    }
} 

调用:

static void Main(string[] args)
        { 
            var lst =  (List<CustomConfig.LoveConfig>)ConfigurationManager.GetSection("CustomConfig");
            var lst2 = ConfigurationManager.GetSection("CustomConfig"); 
            foreach (var item in lst)
            {
                Console.WriteLine(item.Name + item.Sex); 
            }  
            Console.WriteLine("Task End !");
            Console.ReadLine(); 
        }

 

posted @ 2022-03-24 16:34  德平Zeng  阅读(442)  评论(0编辑  收藏  举报