鼠标指向表格时 显示更多信息 toolTipController1

//窗体添加 控件 ，然后将GridControl 相关属性栏对应上新加的控件 切记  本文是转帖，稍作修改    

private void toolTipController1_GetActiveObjectInfo(object sender, DevExpress.Utils.ToolTipControllerGetActiveObjectInfoEventArgs e)

        {

            this.gridControl1.ToolTipController = tip;

            if (e.SelectedControl != gridControl1) return;



            ToolTipControlInfo info = null;



            GridView view = gridControl1.GetViewAt(e.ControlMousePosition) as GridView;

            if (view == null) return;





            GridHitInfo hi = view.CalcHitInfo(e.ControlMousePosition);



            //if (hi.HitTest == GridHitTest.RowIndicator)// 我测试时要注掉这行才搞定

            //{ 

            //An object that uniquely identifies a row indicator cell

            object o = hi.HitTest.ToString() + hi.RowHandle.ToString();

            StringBuilder sb = new StringBuilder();

            sb.AppendLine("行数据基本信息:");

            foreach (GridColumn gridCol in view.Columns)

            {

                if (!gridCol.Visible)//如果加 ! 表示 被隐藏的列，如果不加，则显示所见的列

                {

                    sb.AppendFormat("{0}:{1}\r\n", gridCol.Caption, view.GetRowCellDisplayText



(hi.RowHandle, gridCol.FieldName));

                }

            }

            info = new ToolTipControlInfo(o, sb.ToString());



            // }



            //Supply tooltip information if applicable, otherwise preserve default tooltip (if any)

            if (info != null)

            {

                e.Info = info;

            }





        }