tree.cs

来自「ASP C#代码实例 适合初学人士学习使用」· CS 代码 · 共 61 行

using System;
using System.Data;
using System.Data.SqlClient;
using Microsoft.Web.UI.WebControls;

namespace OfficeAuto.Components
{
	/// <summary>
	/// Tree 的摘要说明。
	/// </summary>
	public class Tree
	{
		public void  BindTree(TreeView treeView)
		{
			Tree tree = new Tree();
			DataTable dataTable = tree.GetTrees();

			treeView.Nodes.Clear();                   // 清空树

			TreeNode rootnode = new TreeNode();
			rootnode.Text = "办公平台";                 // 给节点绑定显示值
			rootnode.NodeData = "0";                   // 给节点绑定key值
			rootnode.Expanded = false;                  //　默认根结点为展开
			rootnode.NavigateUrl = "OfficeIndex.aspx";
			rootnode.Target = "MainFrame";
			rootnode.ImageUrl = "../Images/Icon/05.gif";
			treeView.Nodes.Add(rootnode);

			CreateChildNode(rootnode,dataTable);                //　加入所有根结点以下的结点　												
		}
		
		public void CreateChildNode(TreeNode parentnode,DataTable dataTable)
		{
			DataRow[] rowList = dataTable.Select("ParentID='" + parentnode.NodeData + "'");
			foreach(DataRow row in rowList)
			{
				TreeNode tempnode = new TreeNode();
				tempnode.Text = row["Title"].ToString();
				tempnode.NodeData = row["TreeID"].ToString();				
				tempnode.Expanded = false;
				tempnode.NavigateUrl = row["Url"].ToString();
				tempnode.Target = "MainFrame";
				parentnode.Nodes.Add(tempnode);
				CreateChildNode(tempnode,dataTable);
			}			
		}

		public DataTable GetTrees()
		{
			Database db = new Database();
			SqlDataReader dr = null;
			db.RunProc("Pr_GetTrees",out dr);

			///获取DataTable对象
			DataTable dt = SystemTools.ConvertDataReaderToDataTable(dr);	

			return(dt);
		}
	}
}