tree_left.aspx.cs

4个源代码 比较经典 适合CSharp初学者

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using Microsoft.Web.UI.WebControls;

namespace tree
{
	/// <summary>
	/// tree_Left 的摘要说明。
	/// </summary>
	public class tree_Left : System.Web.UI.Page
	{
		protected Microsoft.Web.UI.WebControls.TreeView TreeView1;
		protected System.Web.UI.WebControls.Label lbl_Error;
		protected System.Web.UI.WebControls.Label lbl_Curnodeid;
		protected config conn=new config();
	
		private void Page_Load(object sender, System.EventArgs e)
		{
			// 在此处放置用户代码以初始化页面
			if (!Page.IsPostBack)
			{
				string str_Sql="select * from t_tree order by order_id";
				if (conn.GetRowCount(str_Sql)>0) // 遍历树
				{
					conn.BindTreeView1("nodeid","parentid","location","mytext",str_Sql,"mainFrame","tree_Operate.aspx",lbl_Curnodeid,TreeView1);	
				}				
			}
		}

		#region Web Form Designer generated code
		override protected void OnInit(EventArgs e)
		{
			//
			// CODEGEN：该调用是 ASP.NET Web 窗体设计器所必需的。
			//
			InitializeComponent();
			base.OnInit(e);
		}
		
		/// <summary>
		/// 设计器支持所需的方法 - 不要使用代码编辑器修改
		/// 此方法的内容。
		/// </summary>
		private void InitializeComponent()
		{    
			this.Load += new System.EventHandler(this.Page_Load);

		}
		#endregion
		private void TreeView_Selected(object sender, Microsoft.Web.UI.WebControls.TreeViewSelectEventArgs e)
		{
			lbl_Curnodeid.Text =  ((TreeNode)TreeView1.GetNodeFromIndex(e.NewNode)).NodeData;	
		}
		private void Page_Unload(object sender, System.EventArgs e)
		{
			conn.Close();
		}

	}

}