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ASP.net method of realizing infinite classification generation table (background custom output table) _ Practical Tips

Source: Internet
Author: User
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The example of this paper describes the method of ASP.net to realize the infinite classification generation table. Share to everyone for your reference, specific as follows:

Data Structure Monitor_group

monitor_grp_id monitor_grp_name parent_id level ChildCount by
[int, auto increment]      [Nvarchar,not NULL]  [Int,not NULL]   [Int,not NULL]     [Int,not NULL] [int, NULL]
1 Database server 0 1 2
2 Application Server 0 1 2
3 System server 0 1 0
4 Web server 1 2 0
5 mail server 1 2 0
6 Proxy server 2 2 0
7 FTP server 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 Summary Description///</summary>///namespace Yihan {namespace Data {public class Myda Tabind {public Mydatabind () {////todo: Adding constructor logic//} public stat here IC string gettree_monitor_grp_id (DataTable dt, int parent_id, ref string returnstring) {//Binding directory tree//d
        T:datatable object; parent_id: Parent id;returnstring: output reference variable; datarow[] dr = dt.
        Select ("parent_id=" + parent_id);     int currentlenght = 0;    Current number of foreach (DataRow row in DR) {string nodeimg = "";  Node picture string treelineimg = "";
          Tree line Currentlenght + + 1; if (CoNvert.
          ToInt32 (row["ChildCount"]) > 0) {nodeimg = "\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"] + "' > Add subclass </a>  ";
          Returnstring + + "<a href= ' class_modi.aspx?monitor_grp_id=" + row["monitor_grp_id"] + "' > Modify </a>  "; Returnstring + = "<a href= ' class_del.aspx?monitor_grp_id=" + row["monitor_grp_id"] + "' onclick=\" javascript:{ if (!confirm delete the class and its subclasses?)) return false;}
          \ "> Delete </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 desc,monitor_grp_id";
      Dbconn conn = new Dbconn ();
      DT = conn. DataTable (SQL);
      Literal1.text = mydatabind.gettree_monitor_grp_id (dt, 0, ref resultstring); Call
      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" > Monitor group name </th>
    <th width= "9%" bgcolor= "#BAD8EF" > Level </th>
    <th width= "15%" bgcolor= "#BAD8EF" > sub-nodes Total </th> <th width= "
    29%" bgcolor= "#BAD8EF" > Operations </th>
   </tr>
   <tr>
    <td colspan= "5" style= "padding-left:6px;background:# DBDBDB; " > Monitor Group </td>
   </tr>
    <asp:literal id= "Literal1" runat= "Server" ></asp:Literal>
  </table>
  </form>
</body>

Handwriting table

String s= "<table>"
s+= "<tr><td>";
s+= variable value;
s+= "</td></tr></table>";
Response.Write (s);

As for the cycle and its other methods to construct themselves

More interested in asp.net related content readers can view the site topics: "asp.net file Operation skills Summary", "ASP.net ajax Skills Summary" and "asp.net cache operation skills Summary."

I hope this article will help you to ASP.net program design.

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