asp.net+jquery+ztree实现动态绑定数据例子

作者：袖梨 2022-06-25

先看效果图：

1、用于获取JSON数据的代码：

 代码如下 复制代码


<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="RegionData.aspx.cs" Inherits="AT.Web.Ajax.RegionData" %>

后台代码：

 代码如下 复制代码

using AT.Business.DAL;
using AT.Business.IDAO;
using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace AT.Web.Ajax
{
    public partial class RegionData : System.Web.UI.Page
    {
        private AT_System_IDAO systemidao = new AT_System_Dal();
        protected void Page_Load(object sender, EventArgs e)
        {
            try
            {
                //取得前台ajax请求的方法名称
                string ajaxMethod = Request["ajaxMethod"].ToString();
                System.Reflection.MethodInfo method = this.GetType().GetMethod(ajaxMethod);
                if (method != null)
                {
                    //通过方法名称指向对应的方法
                    method.Invoke(this, new object[] { });
                }
            }
            catch (Exception)
            {
                throw;
            }
            finally
            {
                Response.End();
            }
        }
        ///


        /// 异步加载当前节点的子节点
        ///
        public void AnsyData()
        {
            List lsNode = new List();
            try
            {
                string parentId = Request.Params["id"];
                DataTable dtRegion = this.systemidao.GetRegionList();
                DataView dv = new DataView(dtRegion);
                dv.RowFilter = "PRegion_ID = '" + parentId + "'";
                lsNode = getList(dv);
                htm = htm&(JsonConvert.SerializeObject(lsNode));
            }
            catch (Exception)
            {
                throw;
            }
        }
        ///
        /// 判断当前节点是否还有子节点
        ///
        /// 父节点Id
        /// bool类型
        public bool isParentTrue(string ParentId)
        {
            try
            {
                DataTable dtRegion = this.systemidao.GetRegionList();
                DataView dv = new DataView(dtRegion);
                dv.RowFilter = "PRegion_ID = '" + ParentId + "'";
                return dv.Count >= 1 ? true : false;
            }
            catch (Exception)
            {
                throw;
            }
        }
        ///
        /// 初始化第一次节点加载
        ///
        public void FirstAnsyData()
        {
            try
            {
                DataTable dtRegion = this.systemidao.GetRegionList();
                DataView dv = new DataView(dtRegion);
                dv.RowFilter = " PRegion_ID = '0' ";
                List lsNode = new List();
                lsNode = getList(dv);
                //用到了Newtonsoft.dll 转化成Json格式
                htm = htm&(JsonConvert.SerializeObject(lsNode));
            }
            catch (Exception)
            {
                throw;
            }
        }
        ///
        /// 把数据形式转换成zTree的json数据格式
        ///
        ///
        ///
        public List getList(DataView table)
        {
            try
            {
                List lsNode = new List();
                bool isParent = true;
                foreach (DataRowView drv in table)
                {
                    var ParentId = string.IsNullOrEmpty(drv["PRegion_ID"].ToString()) ? "0" : drv["PRegion_ID"].ToString();
                    if (isParentTrue(drv["Region_ID"].ToString()))
                    {
                        isParent = true;
                    }
                    else
                    {
                        isParent = false;
                    }
                    var zTreeData = new
                    {
                        id = drv["Region_ID"],
                        pId = string.IsNullOrEmpty(ParentId) ? "0" : ParentId,
                        name = drv["Region_Name"],
                        isParent = isParent
                    };
                    lsNode.Add(zTreeData);
                }
                return lsNode;
            }
            catch (Exception)
            {
                throw;
            }
        }
    }
}

2、用于展示zTree目录树的页面代码：

 代码如下 复制代码

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="AT.Web.WebForm1" %>



   
    zTree树形示例
   
   
   
   
   
   
   
   


   


       

       



    说明：

    1、js加载完成后，调用服务器asp.net的方法，生成data

    2、绑定data数据

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