using?System;
using?System.Configuration;
using?System.Data;
using?System.Linq;
using?System.Web;
using?System.Web.Security;
using?System.Web.UI;
using?System.Web.UI.HtmlControls;
using?System.Web.UI.WebControls;
using?System.Web.UI.WebControls.WebParts;
using?System.xml.Linq;
using?System.xml;
using?System.Collections.Generic;//泛型集合

public?partial?class?_Default?:?System.Web.UI.Page?
{
????protected?void?Page_Load（object?sender?EventArgs?e）
????{
????????if?（!Page.IsPostBack）
????????{
????????????ClassName?=?““;
????????????GridViewBind（）;
????????}
????}
????public?String?ClassName
????{
????????get?{?return?（string）ViewState[“className“];?}
????????set?{?ViewState[“className“]?=?value;?}
????}
????public?void?GridViewBind（）
????{
????????xmlDocument?xmldoc?=?new?xmlDocument（）;
????????xmldoc.Load（Server.MapPath（“~/xmlData/YYJCSchool.xml“））;
????????//定義Xpath字符串
????????string?xpath?=?““;
????????if?（ClassName?==?““）
????????{
????????????xpath?=?“/School/ClassInfo/Students/Student“;
????????}
????????else?
????????{
????????????xpath?=?“/School/ClassInfo[@Name=‘“?+?ClassName?+?“‘]/Students/Student“;
????????}
????????xmlNodeList?nodeList?=?xmldoc.SelectNodes（xpath）;
????????List?studentList=?new?List（）;
????????foreach?（xmlNode?xmlNode?in?nodeList）
????????{
????????????StudentInfo?StuInfo?=?new?StudentInfo（）;//定義一個(gè)學(xué)員
????????????StuInfo.Id?=?xmlNode.Attributes[“Id“].Value;
????????????StuInfo.Sex?=?xmlNode.Attributes[“Sex“].Value;
????????????StuInfo.Name?=?xmlNode[“name“].InnerText;
????????????StuInfo.Phone?=?xmlNode[“phone“].InnerText;
????????????StuInfo.Qq?=?xmlNode[“QQ“].InnerText;
????????????StuInfo.Email?=?xmlNode[“Email“].InnerText;
????????????StuInfo.Address?=?xmlNode[“Address“].InnerText;
????????????StuInfo.Age?=（xmlNode[“age“].InnerText）;
????????????//
????????????studentList.Add（StuInfo）;
????????}
????????//綁定數(shù)據(jù)源
????????GridView1.DataSource?=?studentList;
????????GridView1.DataBind（）;
????}
????protected?void?TreeView1_SelectedNodeChanged（object?sender?EventArgs?e）
????{
????????ClassName?=?TreeView1.SelectedNode.Text;
????????GridViewBind（）;
????}
}