DevExpress WinForm嵌入子图、允许数据换行显示

实现效果，可以通过前面的±号，选择是否展开。

首现要将DevExpress需要显示的对象和子对象封装成类，在类中就定义为嵌套
的形式

internal class WarningDetail
    {
        public string Date { get; set; }
        public string Description { get; set; }
    }

    internal class WarningInfo
    {
        public string ID { get; set; }
        public string Date { get; set; }
        public string Warning { get; set; }
        public List<WarningDetail> Detail2List { get; set; }
    }
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然后，绑定GridView的数据，表格的宽度按照需求设定

 private void TimeDataViewer(string[] list, DateTime _startTime, DateTime _endTime)
        {
            //为链接动作，需要将数据存储到队列并记录位置
            List<WarningInfo> warningInfoList = new List<WarningInfo>();           
           //数据处理部分省略
           
           //绑定数据
            this.TimeGridControl.DataSource = warningInfoList;
            
            //绑定子表
             GridView grv2 = null;
             //共用一个GridView和GridControl
            var grv = this.TimeGridView;
            var gridControl = this.TimeGridControl;
            //创建一个从表的GridView对象
            grv2 = new GridView();
            grv2.ViewCaption = "记录明细";
            grv2.Name = "grv2";
            grv2.GridControl = gridControl;
            //构建GridLevelNode并添加到LevelTree集合里面
            var node = new GridLevelNode();
            node.LevelTemplate = grv2;
            node.RelationName = "Detail2List";//这里对应集合的属性名称
            gridControl.LevelTree.Nodes.AddRange(new GridLevelNode[] { node });
            //添加对应的视图集合显示
            gridControl.ViewCollection.Clear();
            gridControl.ViewCollection.AddRange(new BaseView[] { grv, grv2 });


            this.TimeGridView.GroupPanelText = "异常统计（时间）";            
            this.TimeGridView.OptionsView.ShowGroupPanel = true;
            this.TimeGridView.OptionsView.EnableAppearanceOddRow = true;//奇数行颜色变化
            this.TimeGridView.Appearance.OddRow.BackColor = System.Drawing.Color.LightSteelBlue;//奇数行颜色设置  
            this.TimeGridView.OptionsView.EnableAppearanceEvenRow = true;//偶数行颜色变化
            this.TimeGridView.Appearance.EvenRow.BackColor = System.Drawing.Color.AliceBlue;//偶数行颜色设置
            this.TimeGridView.OptionsBehavior.EditorShowMode = DevExpress.Utils.EditorShowMode.Click;//设置只能选中整行
            this.TimeGridView.OptionsBehavior.Editable = false;//设置列的数据不能编辑
            表格的宽度按照需求设定，例如我设置为1：2：3            this.TimeGridView.Columns[0].Width = this.TimeGridControl.Width/6;
            this.TimeGridView.Columns[1].Width = 2 * this.TimeGridControl.Width / 6;
            this.TimeGridView.Columns[2].Width = 3 * this.TimeGridControl.Width / 6;
        }
        //允许换行显示
DevExpress.XtraEditors.Repository.RepositoryItemMemoEdit memoEdit = new DevExpress.XtraEditors.Repository.RepositoryItemMemoEdit();//创建RepositoryItemMemoEdit
            memoEdit.AutoHeight = true;
            this.TimeGridView.Columns[1].ColumnEdit = memoEdit;//允许第二行换行显示
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