DEV系列--treeList用法2

来源：互联网发布：蜂群算法编辑：程序博客网时间：2024/06/06 00:10
不从数据库读数据，创建一个Datatable绑定到treeList上，效果图：
源代码：
using System;  using System.Collections.Generic;  using System.ComponentModel;  using System.Data;  using System.Drawing;  using System.Text;  using System.Linq;  using System.Windows.Forms;  using DevExpress.XtraEditors;  using DevExpress.XtraTreeList.Nodes;  using DevExpress.XtraTreeList;    namespace lianxi  {      public partial class Example_treelist : DevExpress.XtraEditors.XtraForm      {          public Example_treelist()          {              InitializeComponent();              create_Datatable();          }              //创建一个Datatable          private void create_Datatable()          {                treeList1.OptionsView.ShowCheckBoxes = true;//设置复选框                            DataTable dt = new DataTable();              dt.Columns.Add("ID");              dt.Columns.Add("PARENTID");              dt.Columns.Add("NAME");                DataRow dr1 = dt.NewRow();              dr1["ID"] = 1;              dr1["PARENTID"] = 1;              dr1["NAME"] = "类目1";              dt.Rows.Add(dr1);              DataRow dr2 = dt.NewRow();              dr2["ID"] = 2;              dr2["PARENTID"] = 1;              dr2["NAME"] = "商品1";              dt.Rows.Add(dr2);              DataRow dr3 = dt.NewRow();              dr3["ID"] = 3;              dr3["PARENTID"] = 1;              dr3["NAME"] = "商品2";              dt.Rows.Add(dr3);              DataRow dr4 = dt.NewRow();              dr4["ID"] = 4;              dr4["PARENTID"] = 4;              dr4["NAME"] = "类目2";              dt.Rows.Add(dr4);              DataRow dr5 = dt.NewRow();              dr5["ID"] = 5;              dr5["PARENTID"] = 4;              dr5["NAME"] = "商品1";              dt.Rows.Add(dr5);              DataRow dr6 = dt.NewRow();              dr6["ID"] = 6;              dr6["PARENTID"] = 4;              dr6["name"] = "商品2";              dt.Rows.Add(dr6);                //TreeList绑定数据              this.treeList1.DataSource = dt;              this.treeList1.KeyFieldName = "ID";              this.treeList1.ParentFieldName = "PARENTID";              this.treeList1.Columns[0].Caption = "测试";//树的名称          }          //给节点添加点击事件          private void treeList1_MouseDown(object sender, MouseEventArgs e)          {              if (e.Button == MouseButtons.Right)              {                  DevExpress.XtraTreeList.TreeListHitInfo hinfo = this.treeList1.CalcHitInfo(new Point(e.X,e.Y));                  DevExpress.XtraTreeList.TreeListHitInfo hitInfo = (sender as TreeList).CalcHitInfo(new Point(e.X, e.Y));                  TreeListNode node = hitInfo.Node;                  if (hinfo.HitInfoType == DevExpress.XtraTreeList.HitInfoType.Cell)                  {                      string aaa = node.Expanded.GetHashCode().ToString();                      string ab = node.GetValue("name").ToString();//获取当前节点的值                      if (hinfo.Node.RootNode.Id == hinfo.Node.Id)                      {                          popupMenu1.ShowPopup(Control.MousePosition);                          string ncount = node.Nodes.Count.ToString();                          string names = node.Nodes[1].GetValue("name").ToString();                          richTextBox1.Text = "子节点的总数是\"" + ncount + "\"" + "第二个字节点名称是\"" + names + "\"";                         }                      else                      {                          popupMenu2.ShowPopup(Control.MousePosition);                          string sname = node.ParentNode.GetValue("name").ToString();                          richTextBox1.Text = "根节点的名称是\"" + sname + "\"";                      }                  }                  treeList1.FocusedNode = node;              }          }                                     }  }
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