I have too many data to show. How to index it in the following figure

Hello Ricardo,

Thank you for writing.

A possible solution is to handle the ViewCellFormatting event and to change the text of the cell element in the indent column according to the row index. We have an article in our documentation demonstrating how this can be achieved: https://docs.telerik.com/devtools/winforms/controls/gridview/cells/formating-examples/row-numbers.

I hope this will help.

Regards,
Hristo
Progress Telerik

Dear Hristo,

Thanks for your reply.But not what I wanted

If I don't use the ViewCellFormatting event, is there any other way to achieve this?

Can we do a SubClass to do that?

Because I have so many watches, the workload is too heavy.

Best regards

Hello Ricardo,

The grid control is virtualized and the cell elements are reused to represent different logical cell objects: 

• https://docs.telerik.com/devtools/winforms/controls/gridview/fundamentals/ui-virtualization
• https://docs.telerik.com/devtools/winforms/controls/gridview/fundamentals/logical-vs.-visual-grid-structure

Currently, this is the preferred approach for adding row indices in the indent column. Handling the event as seen in the documentation article should not in any way impact the performance of the control. 

Regards,
Hristo
Progress Telerik