DevExpress的TreeList怎样设置数据源使其显示成单列树形结构

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

在上面已经实现devexpress的安装之后，拖拽一个treelist，然后怎样给其设置数据源。

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

参照上面进行设置数据源的过程。

如果要实现这样单列的树形结构应该怎样设置参数以及数据源。

 

 

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实现

首先新建一个winform程序，然后拖拽一个treelist控件

然后双击进入窗体的加载事件中，如果在别的地方设置数据源同理。

首先进行treelist样式等的设置

 

#region 设置列头、节点指示器面板、表格线样式

            treelist1.optionsview.showcolumns = false;             //隐藏列标头
            treelist1.optionsview.showindicator = false;           //隐藏节点指示器面板
            treelist1.optionsview.showhorzlines = false;           //隐藏水平表格线
            treelist1.optionsview.showvertlines = false;           //隐藏垂直表格线
            treelist1.optionsview.showindentasrowstyle = false;

            #endregion

            #region 初始禁用单元格选中，禁用整行选中

            treelist1.optionsview.showfocusedframe = true;                               //设置显示焦点框
            treelist1.optionsselection.enableappearancefocusedcell = false;              //禁用单元格选中
            treelist1.optionsselection.enableappearancefocusedrow = false;               //禁用正行选中

            #endregion

            #region 设置treelist的展开折叠按钮样式和树线样式

            treelist1.optionsview.showbuttons = true;                  //显示展开折叠按钮
            treelist1.lookandfeel.usedefaultlookandfeel = false;       //禁用默认外观与感觉
            treelist1.lookandfeel.usewindowsxptheme = true;            //使用windowsxp主题
            treelist1.treelinestyle = devexpress.xtratreelist.linestyle.percent50;     //设置树线的样式

            #endregion

 

然后设置其单列显示

#region 添加单列

            devexpress.xtratreelist.columns.treelistcolumn colnode = new devexpress.xtratreelist.columns.treelistcolumn();
            colnode.name = string.format("col{0}", "nodetext");
            colnode.caption = "nodetext";
            colnode.fieldname = "nodetext";
            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

            treelist1.columns.clear();
            treelist1.columns.addrange(new devexpress.xtratreelist.columns.treelistcolumn[] { colnode });
            #endregion

 

注：

这里的fieldname 要与数据源中要显示的属性名相对应。

然后设置作为识别节点的主键字段，这里使用id来区分标记每个节点；设置其父节点的标记属性。

treelist1.keyfieldname = "id";
treelist1.parentfieldname = "parentid";

 

为了构建数据源，我们需要新建一个datatreenode类

using system;
using system.collections.generic;
using system.linq;
using system.text;
using system.threading.tasks;

namespace treelisttest
{
    public class datatreenode
    {
        private string id;
        private string parentid;
        private string nodetext;


        public string id
        {
            get { return id; }
            set { id = value; }
        }

        public string parentid
        {
            get { return parentid; }
            set { parentid = value; }
        }

        public string nodetext
        {
            get { return nodetext; }
            set { nodetext = value; }
        }


    }

}

 

然后再回到上面构建数据源

   datatreenode node1 = new datatreenode();
            node1.id = "1";
            node1.parentid = null;
            node1.nodetext = "1公众号";

            datatreenode node11 = new datatreenode();
            node11.id = "2";
            node11.parentid = "1";
            node11.nodetext = "1-1霸道的程序猿";

            datatreenode node111 = new datatreenode();
            node111.id = "3";
            node111.parentid = "2";
            node111.nodetext = "1-1-1大量编程资源";


            list<datatreenode> data = new list<datatreenode>();

            data.add(node1);
            data.add(node11);
            data.add(node111);

 

然后给treelist设置数据源

treelist1.datasource = data;
treelist1.refreshdatasource();

 

最终完整的窗体加载方法代码

 

private void form1_load(object sender, eventargs e)
        {
            #region 设置列头、节点指示器面板、表格线样式

            treelist1.optionsview.showcolumns = false;             //隐藏列标头
            treelist1.optionsview.showindicator = false;           //隐藏节点指示器面板
            treelist1.optionsview.showhorzlines = false;           //隐藏水平表格线
            treelist1.optionsview.showvertlines = false;           //隐藏垂直表格线
            treelist1.optionsview.showindentasrowstyle = false;

            #endregion

            #region 初始禁用单元格选中，禁用整行选中

            treelist1.optionsview.showfocusedframe = true;                               //设置显示焦点框
            treelist1.optionsselection.enableappearancefocusedcell = false;              //禁用单元格选中
            treelist1.optionsselection.enableappearancefocusedrow = false;               //禁用正行选中

            #endregion

            #region 设置treelist的展开折叠按钮样式和树线样式

            treelist1.optionsview.showbuttons = true;                  //显示展开折叠按钮
            treelist1.lookandfeel.usedefaultlookandfeel = false;       //禁用默认外观与感觉
            treelist1.lookandfeel.usewindowsxptheme = true;            //使用windowsxp主题
            treelist1.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}", "nodetext");
            colnode.caption = "nodetext";
            colnode.fieldname = "nodetext";
            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

            treelist1.columns.clear();
            treelist1.columns.addrange(new devexpress.xtratreelist.columns.treelistcolumn[] { colnode });

            #endregion

            treelist1.keyfieldname = "id";
            treelist1.parentfieldname = "parentid";

            datatreenode node1 = new datatreenode();
            node1.id = "1";
            node1.parentid = null;
            node1.nodetext = "1公众号";

            datatreenode node11 = new datatreenode();
            node11.id = "2";
            node11.parentid = "1";
            node11.nodetext = "1-1霸道的程序猿";

            datatreenode node111 = new datatreenode();
            node111.id = "3";
            node111.parentid = "2";
            node111.nodetext = "1-1-1大量编程资源";


            list<datatreenode> data = new list<datatreenode>();

            data.add(node1);
            data.add(node11);
            data.add(node111);
            
            treelist1.datasource = data;
            treelist1.refreshdatasource();
        }