DevExpress TreeList树组件自定义TreeListNode的Tooltip的方法（自动消息提示）

  DevExpress TreeList树组件自定义TreeListNode的Tooltip的方法（自动消息提示）

本文实例展示了DevExpress实现自定义TreeListNode的Tooltip的方法。

TreeListNode的Tooltip效果：

解决方案：

1.设置treeList的ToolTipController属性，绑定toolTipController1。

2.实现toolTipController1的GetActiveObjectInfo事件。

toolTipController1 控件属性设置：

C# Code:

public static class TreeListExtension
{
  
  /// </summary>
  /// <param name="tree">TreeList</param>
  /// <param name="e">ToolTipControllerGetActiveObjectInfoEventArgs</param>
  /// <param name="builderNodeTooltipHandler">委托</param>
   public static void CustomNodeTooltip(this TreeList tree, ToolTipControllerGetActiveObjectInfoEventArgs e, Func<TreeListNode, string> builderNodeTooltipHandler)
  {
    if (e.SelectedControl is DevExpress.XtraTreeList.TreeList)
    {
      TreeListHitInfo _hit = tree.CalcHitInfo(e.ControlMousePosition);
      if (_hit.HitInfoType == HitInfoType.Cell)
      {
        TreeListViewInfo _viewInfo = tree.ViewInfo;
        RowInfo _rowInfo = _viewInfo.GetRowInfoByPoint(e.ControlMousePosition);
        CellInfo _cellInfo = _rowInfo.Cells[_hit.Column.VisibleIndex] as CellInfo;
        EditHitInfo _editHitInfo = _cellInfo.EditorViewInfo.CalcHitInfo(e.ControlMousePosition);
        if (_editHitInfo.HitTest == EditHitTest.MaskBox)
        {
          string _toolTip = builderNodeTooltipHandler(_hit.Node);
          if (!string.IsNullOrEmpty(_toolTip))
          e.Info = new ToolTipControlInfo(_cellInfo, _toolTip);
        }
      }
    }
  }
  
}

//来源:C/S框架网 | www.csframework.com | QQ:23404761

toolTipController1_GetActiveObjectInfo事件：

C# Code:

private void toolTipController1_GetActiveObjectInfo(object sender, ToolTipControllerGetActiveObjectInfoEventArgs e)
{
  tlGroup4User.CustomNodeTooltip(e, node =>
  {
    toolTipController1.ImageIndex = node.ImageIndex;
    
    NodeModel m = node.Tag as NodeModel;
    if (m.Type.ToUpper() == "GROUP")
    {
      return $"部门编号：{m.DataID}\r\n部门名称：{m.Text}";
    }
    else
    {
      return $"员工编号：{m.DataID}\r\n员工姓名：{m.Text}";
    }
    });
    
  }
  
  //来源:C/S框架网 | www.csframework.com | QQ:23404761

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