treeview的结点
请位各位。treeview中，结点是不是可以触一个事件的。
如上图，我想点一下某个学生的信息，即改变label的text
这些值都有数据库里面了，而且结点的value值是所要显示学生信息记录的id
请各指教，急急急。谢谢！！！！！！！！！
[解决办法]
<%@ Page Language="C#" %><%@ Import Namespace="System.Data" %><%@ Import Namespace="System.Data.Sql" %><%@ Import Namespace="System.Data.SqlClient" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><script runat="server"> protected void Page_Load(object sender, EventArgs e) { using (SqlConnection conn = new SqlConnection(connectionString)) { using (SqlDataAdapter da = new SqlDataAdapter(SQLString, conn)) { using (DataTable dt = new DataTable()) { conn.Open(); da.Fill(dt); conn.Close(); foreach (DataRow dr in dt.Rows) { this.TreeView1.Nodes.Add(new TreeNode(dr["stu_name"].ToString(), dr["stu_id"].ToString())); } } } } } protected void TreeView1_SelectedNodeChanged(object sender, EventArgs e) { using (SqlConnection conn = new SqlConnection(connectionString)) { conn.Open(); using (SqlCommand comm = new SqlCommand("SELECT * FROM stu_table WHERE stu_id='" + this.TreeView1.SelectedNode.Value + "'", conn)) { using (SqlDataReader dr = comm.ExecuteReader()) { // show data } } } }</script><html xmlns="http://www.w3.org/1999/xhtml"><head runat="server"> <title>无标题页</title></head><body> <form id="form1" runat="server"> <div> <asp:TreeView ID="TreeView1" runat="server" ShowLines="true" OnSelectedNodeChanged="TreeView1_SelectedNodeChanged"> </asp:TreeView> <asp:Label ID="Label1" runat="server"></asp:Label> </div> </form></body></html>
[解决办法]
<%@ Page Language="C#" %><%@ Import Namespace="System.Data" %><%@ Import Namespace="System.Data.Sql" %><%@ Import Namespace="System.Data.SqlClient" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><script runat="server"> protected void Page_Load(object sender, EventArgs e) { using (SqlConnection conn = new SqlConnection(connectionString)) { using (SqlDataAdapter da = new SqlDataAdapter(SQLString, conn)) { using (DataTable dt = new DataTable()) { conn.Open(); da.Fill(dt); conn.Close(); foreach (DataRow dr in dt.Rows) { this.TreeView1.Nodes.Add(new TreeNode(dr["stu_name"].ToString(), dr["stu_id"].ToString())); } } } } } protected void TreeView1_SelectedNodeChanged(object sender, EventArgs e) { using (SqlConnection conn = new SqlConnection(connectionString)) { conn.Open(); using (SqlCommand comm = new SqlCommand("SELECT * FROM stu_table WHERE stu_id='" + this.TreeView1.SelectedNode.Value + "'", conn)) { using (SqlDataReader dr = comm.ExecuteReader()) { // show data } } } }</script><html xmlns="http://www.w3.org/1999/xhtml"><head runat="server"> <title>无标题页</title></head><body> <form id="form1" runat="server"> <div> <asp:TreeView ID="TreeView1" runat="server" ShowLines="true" OnSelectedNodeChanged="TreeView1_SelectedNodeChanged"> </asp:TreeView> <asp:Label ID="Label1" runat="server"></asp:Label> </div> </form></body></html>
[解决办法]
一个XML的例子，你可以参照。
<?xml version="1.0" encoding="utf-8" ?> <Area> <Province iAreaID ="1" cAreaName="北京市"/> <Province iAreaID ="2" cAreaName="上海市"/> <Province iAreaID ="3" cAreaName="天津市"/> <Province iAreaID ="4" cAreaName="重庆市"/> <Province iAreaID ="5" cAreaName="湖北省"> <City iAreaID ="51" cAreaName="武汉市"/> <City iAreaID ="52" cAreaName="黄冈市" /> <City iAreaID ="53" cAreaName="荆州市"/> <City iAreaID ="54" cAreaName="武穴市" /> <City iAreaID ="55" cAreaName="十堰市"/> <City iAreaID ="56" cAreaName="黄石市" /> </Province> <Province iAreaID ="6" cAreaName="河北省"> <City iAreaID ="61" cAreaName="石家庄市"/> <City iAreaID ="62" cAreaName="唐山市" /> </Province> <Province iAreaID ="7" cAreaName="山西省"> <City iAreaID ="71" cAreaName="太原市" /> <City iAreaID ="72" cAreaName="大同市" /> </Province> </Area>