如何在app.config中创建自定义配置部分？[重复]

导入名称空间：

using System.Configuration;

创建ConfigurationElement公司：

public class Company : ConfigurationElement{        [ConfigurationProperty("name", IsRequired = true)]        public string Name        { get {     return this["name"] as string; }        } [ConfigurationProperty("pre", IsRequired = true)]        public string Code        { get {     return this["pre"] as string; }        }}

ConfigurationElementCollection：

public class Companies        : ConfigurationElementCollection    {        public Company this[int index]        { get {     return base.baseGet(index) as Company ; } set {     if (base.baseGet(index) != null)     {         base.baseRemoveAt(index);     }     this.baseAdd(index, value); }        }       public new Company this[string responseString]       { get { return (Company) baseGet(responseString); } set {     if(baseGet(responseString) != null)     {         baseRemoveAt(baseIndexOf(baseGet(responseString)));     }     baseAdd(value); }        }        protected override System.Configuration.ConfigurationElement CreateNewElement()        { return new Company();        }        protected override object GetElementKey(System.Configuration.ConfigurationElement element)        { return ((Company)element).Name;        }    }

和ConfigurationSection：

public class RegisterCompaniesConfig        : ConfigurationSection    {        public static RegisterCompaniesConfig GetConfig()        { return (RegisterCompaniesConfig)System.Configuration.ConfigurationManager.GetSection("RegisterCompanies") ?? new RegisterCompaniesConfig();        }        [System.Configuration.ConfigurationProperty("Companies")] [ConfigurationCollection(typeof(Companies), AddItemName = "Company")]        public Companies Companies        { get {     object o = this["Companies"];     return o as Companies ; }        }    }

并且您还必须在web.config（app.config）中注册新的配置部分：

<configuration><configSections>          <section name="Companies" type="blablabla.RegisterCompaniesConfig" ..>

然后你用

var config = RegisterCompaniesConfig.GetConfig();foreach(var item in config.Companies){   do something ..}