Asp.Net实现无限分类生成表格的方法(后台自定义输出table)
作者:且行且思
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
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
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
<%@ 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
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
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