本文實例講述了Asp.Net實現無限分類生成表格的方法。分享給大家供大家參考，具體如下：
數據結構 monitor_group
monitor_grp_id monitor_grp_name parent_id level childCount orderby
[int,自動遞增] [nvarchar,not null] [int,not null] [int,not null] [int,not null] [int ,null]
1 數據庫服務器 0 1 2
2 應用服務器 0 1 2
3 系統服務器 0 1 0
4 WEB服務器 1 2 0
5 郵件服務器 1 2 0
6 代理服務器 2 2 0
7 Ftp服務器 2 2 0
/App_code/data.cs
using System;using System.Data;using MySql.Data.MySqlClient;using System.Configuration;using System.Linq;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.HtmlControls;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Xml.Linq;/// <summary>///common 的摘要說明/// </summary>/// namespace yihan{ namespace Data { public class myDataBind { public myDataBind() { // //TODO: 在此處添加構造函數邏輯 // } public static string GetTree_monitor_grp_id(DataTable dt, int parent_id, ref string returnString) { //綁定目錄樹 //dt:DataTable對象;parent_id:父ID;returnString:輸出引用變量; DataRow[] dr = dt.Select("parent_id=" + parent_id); int currentLenght = 0; //當前次數 foreach (DataRow row in dr) { string nodeImg = ""; //節點圖片 string treeLineImg = ""; //樹線 currentLenght += 1; if (Convert.ToInt32(row["childCount"]) > 0) {nodeImg = "<img src='images/treeExpand.gif' align='absmiddle'>";} else {nodeImg = "<img src='images/treeNode.gif' align='absmiddle'>";} for (var i = 1; i <= Convert.ToInt32(row["level"]); i++) { //計算treeLineImg if (i == Convert.ToInt32(row["level"])) { if (currentLenght == dr.Length) //判斷當前次數是否與本次dr總數量相等 { treeLineImg += "└ "; } else { treeLineImg += "├ "; } } else { treeLineImg += "│ "; } } returnString += "<tr>/n"; returnString += "<td align='left'>" + treeLineImg + nodeImg + " " + row["monitor_grp_name"] + "</td>/n"; returnString += "<td align='center'>" + row["level"] + "</td>/n"; returnString += "<td align='center'>" + row["childCount"] + "</td>/n"; returnString += "<td align='center'>"; returnString += "<a href='class_add.aspx?monitor_grp_id=" + row["monitor_grp_id"] + "'>添加子類</a> "; returnString += "<a href='class_modi.aspx?monitor_grp_id=" + row["monitor_grp_id"] + "'>修改</a> "; returnString += "<a href='class_del.aspx?monitor_grp_id=" + row["monitor_grp_id"] + "' onclick=/"javascript:{if(!confirm('確刪要刪除該類及其子類嗎?'))return false;}/">刪除</a> "; returnString += "</td>/n"; returnString += "</tr>/n"; GetTree_monitor_grp_id(dt, Convert.ToInt32(row["monitor_grp_id"]), ref returnString); } return returnString; }//GetCatalogTree End }//myDataBind End }} class_list.aspx.cs
using System;using System.Collections;using System.Configuration;using System.Data;using System.Linq;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.HtmlControls;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Xml.Linq;using yihan.Data;public partial class monitor_monitor_group_class_list : System.Web.UI.Page{ protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { DataTable dt = new DataTable(); string resultString = ""; string sql = "select * from monitor_group order by orderby desc,monitor_grp_id"; DbConn conn = new DbConn(); dt = conn.DataTable(sql); Literal1.Text = myDataBind.GetTree_monitor_grp_id(dt, 0, ref resultString); //調用 dt.Dispose(); conn.Close(); } }} class_list.aspx
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="class_list.aspx.cs" Inherits="monitor_monitor_group_class_list" %><body> <form id="form1" runat="server"> <table class="conBox" width="100%" border="0" cellpadding="0" cellspacing="1" bgcolor="#66AADD"> <tr align="center" bgcolor="#999999"> <th width="36%" bgcolor="#BAD8EF">監視器組名稱</th> <th width="9%" bgcolor="#BAD8EF">級別</th> <th width="15%" bgcolor="#BAD8EF">子節點總數</th> <th width="29%" bgcolor="#BAD8EF">操作</th> </tr> <tr> <td colspan="5" style="padding-left:6px;background:#DBDBDB;">監視器組</td> </tr> <asp:Literal ID="Literal1" runat="server"></asp:Literal> </table> </form></body>
手寫Table
string s="<table>"s+="<tr><td>";s+=變量值;s+="</td></tr></table>";ResPonse.Write(s);
至于循環及其其他的方法自己構造
