核心代码

using System;using System.Data;using System.Configuration;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;namespace Commons{      public class DefaultElement : ConfigurationElement    {        [ConfigurationProperty("factory")]        public string Factory        {            get            {                return this["factory"] as string;            }            set            {                this["factory"] = value;            }        }    }     public class FactoryElement : ConfigurationElement    {        [ConfigurationProperty("name")]        public string Name        {            get            {                return this["name"] as string;            }            set            {                this["name"] = value;            }        }        [ConfigurationProperty("assembly")]        public string Assembly        {            get            {                return this["assembly"] as string;            }            set            {                this["assembly"] = value;            }        }        [ConfigurationProperty("class")]        public string Class        {            get            {                return this["class"] as string;            }            set            {                this["class"] = value;            }        }    }    public class FactoryElements : ConfigurationElementCollection    {        protected override ConfigurationElement CreateNewElement()        {            return new FactoryElement();        }        protected override object GetElementKey(ConfigurationElement element)        {            return ((FactoryElement)element).Name;        }        public FactoryElement this[string name]        {            get            {                return BaseGet(name) as FactoryElement;            }        }    }    public class DbFactorySection : ConfigurationSection    {        [ConfigurationProperty("default")]        public DefaultElement DefaultFactory        {            get            {                return this["default"] as DefaultElement;            }            set            {                this["default"] = value;            }        }        [ConfigurationProperty("factorys")]        public FactoryElements Factorys        {            get            {                return this["factorys"] as FactoryElements;            }            set            {                this["factorys"] = value;            }        }    }}

配置文件

代码中使用

DbFactorySection dfs = ConfigurationManager.GetSection("dbFactory") as DbFactorySection;FactoryElements fes = dfs.Factorys;FactoryElement feSql = fes["sql"];FactoryElement feSqlite = fes["sqlite"]