在web.config中配置自定义节点配置文件的层次结构：<?xml version="1.0"encoding="utf-8"?><configuration><configSections><section name="buildingCollection"type="命名空间.BuildingSection"/></configSections><buildingCollection><buildingElement uniqueid="001"description="一号语音楼"floornum="6"></buildingElement><buildingElement uniqueid="002"description="二号行软楼"floornum="4"></buildingElement><buildingElement uniqueid="003"description="三号通信楼"floornum="2"></buildingElement></buildingCollection><appSettings><!--系统管理员角色名--><add key="AdminRoleName"value="系统管理员"/></appSettings><connectionStrings><add name="ConnectionString"connectionString="User ID=sa;Initial Catalog=databaseName;Data Source=databaseIP;Password=databasePassword"/></connectionStrings></configuration>对<configSections>的自定义配置节点类：using System;using System.Data;using System.Configuration;using System.Web;using System.Web.Security;namespace mon{public class BuildingConfigHelper{public BuildingConfigHelper(){}}public class BuildingSection : ConfigurationSection{[ConfigurationProperty("", IsDefaultCollection = true)]public BuildingElementCollection BuildingCollection{get{return (BuildingElementCollection)base[""];}}}public class BuildingElementCollection : ConfigurationElementCollection {protected override ConfigurationElement CreateNewElement(){return new BuildingElement();}protected override object GetElementKey(ConfigurationElement element) {BuildingElement buildingElement = element as BuildingElement;return buildingElement.UniqueID;}public override ConfigurationElementCollectionType CollectionType{get{ return ConfigurationElementCollectionType.BasicMap; }}protected override string ElementName{get{ return"buildingElement"; }}}public class BuildingElement : ConfigurationElement{[ConfigurationProperty("uniqueid", IsRequired = true)]public string UniqueID{get { return (string)base["uniqueid"];}set { base["uniqueid"] = value; }}[ConfigurationProperty("description", IsRequired = true)]public string Description{get{ return (string)base["description"];}set{ base["description"] = value; }}[ConfigurationProperty("floornum", IsRequired = true)]public string FloorNum{get{ return (string)base["floornum"];}set{ base["floornum"] = value; }}}}自定义配置节点：///<summary>///楼号的数据绑定///</summary>private void DataBindBuilding(){BuildingSection buildingSection = ConfigurationManager.GetSection("buildingCollection") as BuildingSection;foreach (BuildingElement Building in buildingSection.BuildingCollection){string id = Building.UniqueID;string text = Building.Description;}this.ddlBuilding.Items.Clear();this.ddlBuilding.DataSource = buildingSection.BuildingCollection;this.ddlBuilding.DataTextField = "Description";this.ddlBuilding.DataValueField = "UniqueID";this.ddlBuilding.DataBind();this.ddlBuilding.SelectedIndex = 0;}///<summary>///楼层的数据绑定///</summary>///<param name="buildingid"></param>private void DataBindFloor(string buildingid){this.ddlFloor.Items.Clear();BuildingSection buildingSection = ConfigurationManager.GetSection("buildingCollection") as BuildingSection;foreach (BuildingElement Building in buildingSection.BuildingCollection){if( Building.UniqueID.Equals(buildingid)){AppBox.WebControls.ListItem item;int num = Int32.Parse(Building.FloorNum);for (int i = 0; i < num; i++){item = new AppBox.WebControls.ListItem((i + 1).ToString() + "层楼", (i + 1).ToString());this.ddlFloor.Items.Add(item);}this.ddlFloor.SelectedIndex = 0;}}}。