DevExpress建立一个常规TreeList

XtraTreeList(https://www.daboke.com)是DevExpress中的一个树形控件，它可以将信息显示为树状、网格或两者的结合，XtraTreeList 不缓存任何数据，因此只占用少量内存，并且快速执行数据操作!

using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace CreateXtraTreeList
{
    public partial class Form1 : Form
    {
        public Form1（）
        {
            InitializeComponent（）;
        }

        /// 

        /// 节点选中前事件
        /// 

        /// 
        /// 
        private void treeList1_BeforeCheckNode（object sender DevExpress.XtraTreeList.CheckNodeEventArgs e）
        {
            e.State = （e.PrevState == CheckState.Checked ? CheckState.Unchecked : CheckState.Checked）;
        }

        /// 

       

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2020-06-14 13:57  CreateXtraTreeList\
     目录           0  2020-06-14 13:57  CreateXtraTreeList\.vs\
     目录           0  2020-06-14 13:57  CreateXtraTreeList\.vs\CreateXtraTreeList\
     目录           0  2020-06-14 13:57  CreateXtraTreeList\.vs\CreateXtraTreeList\v16\
     文件       59392  2020-06-14 16:05  CreateXtraTreeList\.vs\CreateXtraTreeList\v16\.suo
     目录           0  2020-06-14 13:57  CreateXtraTreeList\.vs\CreateXtraTreeList\v16\Server\
     目录           0  2020-06-14 16:05  CreateXtraTreeList\.vs\CreateXtraTreeList\v16\Server\sqlite3\
     文件           0  2020-06-14 13:57  CreateXtraTreeList\.vs\CreateXtraTreeList\v16\Server\sqlite3\db.lock
     文件     2928640  2020-06-14 16:05  CreateXtraTreeList\.vs\CreateXtraTreeList\v16\Server\sqlite3\storage.ide
     目录           0  2020-06-14 16:04  CreateXtraTreeList\CreateXtraTreeList\
     文件         163  2020-06-14 13:58  CreateXtraTreeList\CreateXtraTreeList\app.config
     目录           0  2020-06-14 13:57  CreateXtraTreeList\CreateXtraTreeList\bin\
     目录           0  2020-06-14 14:36  CreateXtraTreeList\CreateXtraTreeList\bin\Debug\
     文件       14336  2020-06-14 16:05  CreateXtraTreeList\CreateXtraTreeList\bin\Debug\CreateXtraTreeList.exe
     文件         163  2020-06-14 13:58  CreateXtraTreeList\CreateXtraTreeList\bin\Debug\CreateXtraTreeList.exe.config
     文件       40448  2020-06-14 16:05  CreateXtraTreeList\CreateXtraTreeList\bin\Debug\CreateXtraTreeList.pdb
     目录           0  2020-06-14 14:36  CreateXtraTreeList\CreateXtraTreeList\bin\Debug\de\
     文件      176408  2020-06-07 11:08  CreateXtraTreeList\CreateXtraTreeList\bin\Debug\de\DevExpress.Data.v20.1.resources.dll
     文件       15640  2020-06-07 11:09  CreateXtraTreeList\CreateXtraTreeList\bin\Debug\de\DevExpress.Pdf.v20.1.Core.resources.dll
     文件       78104  2020-06-07 11:09  CreateXtraTreeList\CreateXtraTreeList\bin\Debug\de\DevExpress.Printing.v20.1.Core.resources.dll
     文件       13080  2020-06-07 11:09  CreateXtraTreeList\CreateXtraTreeList\bin\Debug\de\DevExpress.Sparkline.v20.1.Core.resources.dll
     文件       27416  2020-06-07 11:09  CreateXtraTreeList\CreateXtraTreeList\bin\Debug\de\DevExpress.Utils.v20.1.resources.dll
     文件      123672  2020-06-07 11:09  CreateXtraTreeList\CreateXtraTreeList\bin\Debug\de\DevExpress.XtraEditors.v20.1.resources.dll
     文件       18712  2020-06-07 11:09  CreateXtraTreeList\CreateXtraTreeList\bin\Debug\de\DevExpress.XtraLayout.v20.1.resources.dll
     文件       21272  2020-06-07 11:10  CreateXtraTreeList\CreateXtraTreeList\bin\Debug\de\DevExpress.XtraTreeList.v20.1.resources.dll
     文件      401176  2020-06-07 11:08  CreateXtraTreeList\CreateXtraTreeList\bin\Debug\DevExpress.Data.Desktop.v20.1.dll
     文件       41134  2020-06-07 11:08  CreateXtraTreeList\CreateXtraTreeList\bin\Debug\DevExpress.Data.Desktop.v20.1.xml
     文件     6334232  2020-06-07 11:08  CreateXtraTreeList\CreateXtraTreeList\bin\Debug\DevExpress.Data.v20.1.dll
     文件     1230778  2020-06-07 11:08  CreateXtraTreeList\CreateXtraTreeList\bin\Debug\DevExpress.Data.v20.1.xml
     文件     3631896  2020-06-07 11:09  CreateXtraTreeList\CreateXtraTreeList\bin\Debug\DevExpress.Pdf.v20.1.Core.dll
     文件      367733  2020-06-07 11:09  CreateXtraTreeList\CreateXtraTreeList\bin\Debug\DevExpress.Pdf.v20.1.Core.xml
............此处省略70个文件信息