Asp.Net实现无限分类生成表格的方法(后台自定义输出table)_实用技巧_

 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; /// 
 ///common 的摘要说明 /// 
 /// 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 = "";} else {nodeImg = "";} 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 += "\n"; returnString += "" + treeLineImg + nodeImg + " " + row["monitor_grp_name"] + "\n"; returnString += "" + row["level"] + "\n"; returnString += "" + row["childCount"] + "\n"; returnString += ""; returnString += "添加子类  "; returnString += "修改  "; returnString += "删除  "; returnString += "\n"; returnString += "\n"; GetTree_monitor_grp_id(dt, Convert.ToInt32(row["monitor_grp_id"]), ref returnString); } return returnString; }//GetCatalogTree End }//myDataBind End } } 

 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(); } } } 

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="class_list.aspx.cs" Inherits="monitor_monitor_group_class_list" %>
监视器组名称
级别
子节点总数
操作
监视器组

 string s="" s+="
"; s+=变量值; s+="
"; ResPonse.Write(s);