tree.cs

本系统以采用一种结合B/S和Web的方式开发的中小企业办公自动化系统为例讨论办公自动化系统的设计与实现。

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);
		}
	}
}