本文实例讲述了Asp.Net实现无限分类生成表格的方法。分享给大家供大家参考，具体如下：
数据结构 monitor_group
monitor_grp_id monitor_grp_name parent_id level childCount orderby
[int,自动递增] [nvarchar,not null] [int,not null] [int,not null] [int,not null] [int ,null]
1 数据库服务器 0 1 2
2 应用服务器 0 1 2
3 系统服务器 0 1 0
4 WEB服务器 1 2 0
5 邮件服务器 1 2 0
6 代理服务器 2 2 0
7 Ftp服务器 2 2 0
\App_code\data.cs
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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 的摘要说明/// </summary>/// namespace yihan{ namespace Data { public class myDataBind { public myDataBind() { // //TODO: 在此处添加构造函数逻辑 // } public static string GetTree_monitor_grp_id(DataTable dt, int parent_id, ref string returnString) { //绑定目录树 //dt:DataTable对象;parent_id:父ID;returnString:输出引用变量; DataRow[] dr = dt.Select("parent_id=" + parent_id); int currentLenght = 0; //当前次数 foreach (DataRow row in dr) { string nodeImg = ""; //节点图片 string treeLineImg = ""; //树线 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++) { //计算treeLineImg if (i == Convert.ToInt32(row["level"])) { if (currentLenght == dr.Length) //判断当前次数是否与本次dr总数量相等 { 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"] + "'>添加子类</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('确删要删除该类及其子类吗?'))return false;}\">删除</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
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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); //调用 dt.Dispose(); conn.Close(); } }} |
class_list.aspx
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<%@ 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">监视器组名称</th> <th width="9%" bgcolor="#BAD8EF">级别</th> <th width="15%" bgcolor="#BAD8EF">子节点总数</th> <th width="29%" bgcolor="#BAD8EF">操作</th> </tr> <tr> <td colspan="5" style="padding-left:6px;background:#DBDBDB;">监视器组</td> </tr> <asp:Literal ID="Literal1" runat="server"></asp:Literal> </table> </form></body> |
手写Table
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string s="<table>"s+="<tr><td>";s+=变量值;s+="</td></tr></table>";ResPonse.Write(s); |
至于循环及其其他的方法自己构造
希望本文所述对大家asp.net程序设计有所帮助。
