[DEVEXPRESS/WINFORM] TreeList 클래스 : PopupMenuShowing 이벤트를 사용해 커스텀 컨텍스트 메뉴 표시하기

TestProject.zip

다운로드

▶ MainForm.cs

using System;

using DevExpress.Utils.Menu;
using DevExpress.XtraEditors;
using DevExpress.XtraTreeList;
using DevExpress.XtraTreeList.Nodes;

namespace TestProject
{
    /// <summary>
    /// 메인 폼
    /// </summary>
    public partial class MainForm : XtraForm
    {
        //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor
        ////////////////////////////////////////////////////////////////////////////////////////// Public

        #region 생성자 - MainForm()

        /// <summary>
        /// 생성자
        /// </summary>
        public MainForm()
        {
            InitializeComponent();

            Load                           += Form_Load;
            this.treeList.PopupMenuShowing += treeList_PopupMenuShowing;
        }

        #endregion

        //////////////////////////////////////////////////////////////////////////////////////////////////// Method
        ////////////////////////////////////////////////////////////////////////////////////////// Private
        //////////////////////////////////////////////////////////////////////////////// Event

        #region 폼 로드시 처리하기 - Form_Load(sender, e)

        /// <summary>
        /// 폼 로드시 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private void Form_Load(object sender, EventArgs e)
        {
            this.treeList.RowHeight                              = 25;
            this.treeList.OptionsView.AutoWidth                  = false;
            this.treeList.OptionsBehavior.ReadOnly               = true;
            this.treeList.OptionsBehavior.PopulateServiceColumns = true;
            this.treeList.KeyFieldName                           = "ID";
            this.treeList.ParentFieldName                        = "RegionID";

            this.treeList.DataSource = SalesData.GetSalesDataList();

            this.treeList.Columns[this.treeList.KeyFieldName   ].Visible = false;
            this.treeList.Columns[this.treeList.ParentFieldName].Visible = false;

            this.treeList.BestFitColumns();

            this.treeList.ExpandAll();
        }

        #endregion
        #region 트리 리스트 팝업 메뉴 표시시 처리하기 - treeList_PopupMenuShowing(sender, e)

        /// <summary>
        /// 트리 리스트 팝업 메뉴 표시시 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private void treeList_PopupMenuShowing(object sender, PopupMenuShowingEventArgs e)
        {
            TreeList treeList = sender as TreeList;

            TreeListHitInfo hitInfo = treeList.CalcHitInfo(e.Point);

            TreeListNode node = null;

            if(hitInfo.HitInfoType == HitInfoType.RowIndicator)
            {
                node = hitInfo.Node;
            }

            if(node == null)
            {
                return;
            }

            DXMenuItem menuItem = new DXMenuItem("Delete Node");
            
            menuItem.Tag = node;

            menuItem.Click += menuItemClick;
    
            e.Menu.Items.Add(menuItem);
        }

        #endregion
        #region 메뉴 항목 클릭시 처리하기 - menuItemClick(sender, e)

        /// <summary>
        /// 메뉴 항목 클릭시 처리하기
        /// </summary>
        /// <param name="sender">이벤트 발생자</param>
        /// <param name="e">이벤트 인자</param>
        private void menuItemClick(object sender, EventArgs e)
        {
            DXMenuItem item = sender as DXMenuItem;

            if(item == null)
            {
                return;
            }

            TreeListNode node = item.Tag as TreeListNode;

            if(node == null)
            {
                return;
            }

            node.TreeList.DeleteNode(node);
        }

        #endregion
    }
}