zoukankan      html  css  js  c++  java
  • ASP.NET 递归将分类绑定到 TreeView

    CREATE TABLE [dbo].[sysMenuTree](
    [NoteId] [decimal](18, 0) NOT NULL,
    [ParentId] [decimal](18, 0) NULL,
    [sText] [nvarchar](50) NULL,
    [sValue] [nvarchar](50) NULL,
    [sURL] [nvarchar](50) NULL,
    [sTarget] [nvarchar](50) NULL,
    [Chger] [nvarchar](50) NULL,
    [ChgTime] [nvarchar](50) NULL,
    CONSTRAINT [PK_sysMenuTree] PRIMARY KEY CLUSTERED
    (
    [NoteId] ASC
    )WITH (PAD_INDEX = OFF, STATISTICS_NORECOMPUTE = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS = ON, ALLOW_PAGE_LOCKS = ON) ON [PRIMARY]
    ) ON [PRIMARY]

    insert into sysMenuTree values(3,0,N'目錄',N'目錄','','','','')
    insert into sysMenuTree values(4,0,N'目錄',N'目錄','','','','')
    insert into sysMenuTree values(5,0,N'目錄',N'目錄','','','','')
    insert into sysMenuTree values(6,3,N'項目.1',N'項目.1','','','','')
    insert into sysMenuTree values(7,3,N'項目.2',N'項目.2','','','','')
    insert into sysMenuTree values(8,4,N'項目.1',N'項目.1','','','','')
    insert into sysMenuTree values(9,4,N'項目.2',N'項目.2','','','','')
    insert into sysMenuTree values(10,4,N'項目.3',N'項目.3','','','','')
    insert into sysMenuTree values(11,5,N'項目.1',N'項目.1','','','','')
    insert into sysMenuTree values(12,5,N'項目.2',N'項目.2','','','','')

    <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>

    <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

    <html xmlns="http://www.w3.org/1999/xhtml">
    <head runat="server">
    <title></title>
    </head>
    <body>
    <form id="form1" runat="server">
    <div>
    <asp:TreeView ID="treeMenu" runat="server">
    </asp:TreeView>
    </div>
    </form>
    </body>
    </html>

    using System.Web.UI.WebControls;
    using System.Data;
    using System.Data.SqlClient;

    public partial class _Default : System.Web.UI.Page
    {
    private readonly string ConnString = @"server=.MSSQLSERVER2008;database=chart;uid=sa;pwd=123456";
    private DataTable dt = null;
    protected void Page_Load(object sender, EventArgs e)
    {
    if(!IsPostBack)
    {
    dt = new DataTable();
    GetMenuToDataTable("select * from sysMenuTree",dt);
    BindTree(dt,null,"0");
    }
    }

    private void BindTree(DataTable dtSource,TreeNode parentNode,string parentID)
    {
    DataRow[] rows = dtSource.Select(string.Format("ParentID={0}",parentID));
    foreach(DataRow row in rows)
    {
    TreeNode node = new TreeNode();
    node.Text = row["sText"].ToString();
    node.Value = row["sValue"].ToString();
    BindTree(dtSource,node,row["NoteId"].ToString());
    if(parentNode == null)
    {
    treeMenu.Nodes.Add(node);
    }
    else
    {
    parentNode.ChildNodes.Add(node);
    }
    }
    }

    private DataTable GetMenuToDataTable(string query,DataTable dt)
    {
    using(SqlConnection conn = new SqlConnection(ConnString))
    {
    SqlCommand cmd = new SqlCommand(query,conn);
    SqlDataAdapter ada = new SqlDataAdapter(cmd);
    ada.Fill(dt);
    }
    return dt;
    }
    }

  • 相关阅读:
    P4890 Never·island
    P2617 Dynamic Rankings
    P3243 [HNOI2015]菜肴制作
    P4172 [WC2006]水管局长
    P4219 [BJOI2014]大融合
    P5241 序列
    P1501 [国家集训队]Tree II
    无法读取用户配置文件,系统自动建立Temp临时用户
    组件服务 控制台打不开
    打印服务器 功能地址保护错误
  • 原文地址:https://www.cnblogs.com/yangpeng-jingjing/p/5825172.html
Copyright © 2011-2022 走看看