DEV系列--treeList用法2

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;
}
}

}
}