DevExpress的TreeList的常用属性设置以及常用事件

r囧r小猫 2023-10-11 13:45 38阅读 0赞

## 场景 ##

Winform控件-DevExpress18下载安装注册以及在VS中使用：

[https://blog.csdn.net/BADAO\_LIUMANG\_QIZHI/article/details/100061243][https_blog.csdn.net_BADAO_LIUMANG_QIZHI_article_details_100061243]

DevExpress的TreeList怎样设置数据源，从实例入手：

[https://blog.csdn.net/BADAO\_LIUMANG\_QIZHI/article/details/102548490][https_blog.csdn.net_BADAO_LIUMANG_QIZHI_article_details_102548490]

在上面实现简单的TreeList并设置数据源，显示效果仍然不是想要的树形结构的效果。

如果想实现如下这样效果，还需要进行进一步的属性设置。

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70][]

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## 实现 ##

/// <summary>
            /// 为树控件设置数据源
            /// </summary>
            /// <param name="treeList">树控件</param>
            /// <param name="data">数据对象</param>
            /// <param name="fieldName">显示的字段</param>
            /// <param name="keyFieldName">键字段</param>
            /// <param name="parentFieldName">父级键字段</param>
            public static void SetTreeListDataSource(DevExpress.XtraTreeList.TreeList treeList, List<DataTreeNode> data, string fieldName, string keyFieldName, string parentFieldName)
            {
                #region 设置节点图标
    
                System.Windows.Forms.ImageList imgList = new System.Windows.Forms.ImageList();
                imgList.Images.AddRange(imgs);
    
                treeList.SelectImageList = imgList;
    
                //目录展开
                treeList.AfterExpand -= treeList_AfterExpand;
                treeList.AfterExpand += treeList_AfterExpand;
    
                //目录折叠
                treeList.AfterCollapse -= treeList_AfterCollapse;
                treeList.AfterCollapse += treeList_AfterCollapse;
    
                //数据节点单击，开启整行选中
                treeList.MouseClick -= treeList_MouseClick;
                treeList.MouseClick += treeList_MouseClick;
    
                //数据节点双击选中
                treeList.MouseDoubleClick -= treeList_MouseDoubleClick;
                treeList.MouseDoubleClick += treeList_MouseDoubleClick;
    
                //焦点离开事件
                treeList.LostFocus -= treeList_LostFocus;
                treeList.LostFocus += treeList_LostFocus;
    
    
                #endregion
    
                #region 设置列头、节点指示器面板、表格线样式
    
                treeList.OptionsView.ShowColumns = false;             //隐藏列标头
                treeList.OptionsView.ShowIndicator = false;           //隐藏节点指示器面板
    
                treeList.OptionsView.ShowHorzLines = false;           //隐藏水平表格线
                treeList.OptionsView.ShowVertLines = false;           //隐藏垂直表格线
                treeList.OptionsView.ShowIndentAsRowStyle = false;
    
                #endregion
    
                #region 初始禁用单元格选中，禁用整行选中
    
                treeList.OptionsView.ShowFocusedFrame = true;                               //设置显示焦点框
                treeList.OptionsSelection.EnableAppearanceFocusedCell = false;              //禁用单元格选中
                treeList.OptionsSelection.EnableAppearanceFocusedRow = false;               //禁用正行选中
                //treeList.Appearance.FocusedRow.BackColor = System.Drawing.Color.Red;      //设置焦点行背景色
    
                #endregion
    
                #region 设置TreeList的展开折叠按钮样式和树线样式
    
                treeList.OptionsView.ShowButtons = true;                  //显示展开折叠按钮
                treeList.LookAndFeel.UseDefaultLookAndFeel = false;       //禁用默认外观与感觉
                treeList.LookAndFeel.UseWindowsXPTheme = true;            //使用WindowsXP主题
                treeList.TreeLineStyle = DevExpress.XtraTreeList.LineStyle.Percent50;     //设置树线的样式
    
                #endregion
    
                #region 添加单列
    
                DevExpress.XtraTreeList.Columns.TreeListColumn colNode = new DevExpress.XtraTreeList.Columns.TreeListColumn();
                colNode.Name = String.Format("col{0}", fieldName);
                colNode.Caption = fieldName;
                colNode.FieldName = fieldName;
                colNode.VisibleIndex = 0;
                colNode.Visible = true;
    
                colNode.OptionsColumn.AllowEdit = false;                        //是否允许编辑
                colNode.OptionsColumn.AllowMove = false;                        //是否允许移动
                colNode.OptionsColumn.AllowMoveToCustomizationForm = false;     //是否允许移动至自定义窗体
                colNode.OptionsColumn.AllowSort = false;                        //是否允许排序
                colNode.OptionsColumn.FixedWidth = false;                       //是否固定列宽
                colNode.OptionsColumn.ReadOnly = true;                          //是否只读
                colNode.OptionsColumn.ShowInCustomizationForm = true;           //移除列后是否允许在自定义窗体中显示
    
                treeList.Columns.Clear();
                treeList.Columns.AddRange(new DevExpress.XtraTreeList.Columns.TreeListColumn[] { colNode });
    
                #endregion
    
                #region 绑定数据源
    
                treeList.KeyFieldName = keyFieldName;
                treeList.ParentFieldName = parentFieldName;
                treeList.DataSource = data;
                treeList.RefreshDataSource();
    
                #endregion
    
                #region 初始化图标
    
                SetNodeImageIndex(treeList.Nodes.FirstOrDefault());
    
                #endregion
            }

[https_blog.csdn.net_BADAO_LIUMANG_QIZHI_article_details_100061243]: https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/100061243
[https_blog.csdn.net_BADAO_LIUMANG_QIZHI_article_details_102548490]: https://blog.csdn.net/BADAO_LIUMANG_QIZHI/article/details/102548490
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/2019101415170198.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk=,size_16,color_FFFFFF,t_70
[https_blog.csdn.net_badao_liumang_qizhi]: https://blog.csdn.net/badao_liumang_qizhi