tree.cs

客户资源是企业的宝贵资源

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

namespace MisResource.Components
{
	/// <summary>
	/// Tree 的摘要说明。
	/// </summary>
	public class Tree
	{
		public static string ApplicationPath = "localhost";

		public void  BindTree(TreeView treeView)
		{
			Tree tree = new Tree();
			DataTable dataTable = tree.GetTrees(MisSystem.PROJECTNAME.ToLower());

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

			TreeNode rootnode = new TreeNode();
			rootnode.Text = "系统平台";                               // 给节点绑定显示值
			
			///作者注：此值请勿随便修改！！！
			rootnode.NodeData = MisSystem.PROJECTTREEROOTNODEDATE;    // 给节点绑定key值
			
			rootnode.Expanded = false;                                //　默认根结点为展开
			rootnode.NavigateUrl = "MainDesktop.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.NavigateUrl = FormatAdminUrl(row["Url"].ToString());
				tempnode.Target = "MainFrame";
				parentnode.Nodes.Add(tempnode);
				CreateChildNode(tempnode,dataTable);
			}			
		}

		public DataTable GetTrees(string sProName)
		{
			///定义类SQLHelper
			SQLHelper.SQLHelper sqlHelper = new SQLHelper.SQLHelper();
			
			///定义保存从数据库获取的结果的DataReader
			SqlDataReader dr = null;

			///创建访问数据库的参数			
			SqlParameter[] paramList = {
										   sqlHelper.CreateInParam("@ProName",SqlDbType.VarChar,200,sProName)
									   };

			try
			{
				///执行存储过程
				sqlHelper.RunProc("Pr_GetTrees",paramList,out dr);
			}
			catch(Exception ex)
			{
				///抛出执行数据库异常
				SystemError.SystemLog(ex.Message);
				throw new Exception(ex.Message,ex);
			}			

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

			///返回从数据库获取的结果
			return(dt);
		}

		private string FormatAdminUrl(string adminUrl)
		{			
			if(adminUrl.IndexOf("Admins") > -1)
			{
				return("Http://" + ApplicationPath + "/" + MisSystem.PROJECTNAME
					+ "/" + adminUrl);
			}
			else
			{
				return(adminUrl);
			}
		}
	}
}