DevExpress Treelist自定义单元格,加注释和行序号。以上一节的列表为例,实现以下效果:预算大于110万的单元格突出显示,加上行序号以及注释,如下图:
添加行序号要用到CustomDrawNodeIndicator方法,要注意的是,取得的节点索引是从0开始的,所以要+1以便第一行从一开始算起。
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- private void treeList1_CustomDrawNodeIndicator(object sender, CustomDrawNodeIndicatorEventArgs e)
- {
- TreeList tree = sender as DevExpress.XtraTreeList.TreeList;
- tree.IndicatorWidth = 30;
- IndicatorObjectInfoArgs args = e.ObjectArgs as IndicatorObjectInfoArgs;
- args.DisplayText = (tree.GetVisibleIndexByNode(e.Node) + 1).ToString();
- }
若要添加单元格注释,则要用到toolTipController控件。将其拉入界面中,并将Treelist的 tooltipcontroller属性设置为刚才的控件名称,然后定义控件的GetActiveObjectInfo事件,本例显示了单元格的内容、列 和节点的索引:
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- private void toolTipController1_GetActiveObjectInfo(object sender, DevExpress.Utils.ToolTipControllerGetActiveObjectInfoEventArgs e)
- {
- if (e.SelectedControl is DevExpress.XtraTreeList.TreeList)
- {
- TreeList tree = (TreeList)e.SelectedControl;
- TreeListHitInfo hit = tree.CalcHitInfo(e.ControlMousePosition);
- if (hit.HitInfoType == HitInfoType.Cell)
- {
- object cellInfo = new TreeListCellToolTipInfo(hit.Node,hit.Column,null);
- string toolTip = string.Format("{0} (Colomn: {1}, Node ID: {2})", hit.Node[hit.Column],
- hit.Column.VisibleIndex, hit.Node.Id);
- e.Info = new DevExpress.Utils.ToolTipControlInfo(cellInfo,toolTip);
- }
- }
- }
最后,说一下自定义单元格,就是把符合条件的单元格按照定义的方式进行显示,例如本例是将预算大于110万的单元格背景变成粉色并且字体白色加粗显示。
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- private void treeList1_NodeCellStyle(object sender, GetCustomNodeCellStyleEventArgs e)
- {
- if (e.Column.FieldName != "Budget") return;
- if (Convert.ToInt32(e.Node.GetValue(e.Column.AbsoluteIndex)) > 1100000)
- {
- e.Appearance.BackColor = Color.FromArgb(80,255,0,255);
- e.Appearance.ForeColor = Color.White;
- e.Appearance.Font = new Font(e.Appearance.Font, FontStyle.Bold);
- }
- }
时间: 2024-10-10 21:33:26