How to remove grid borders in DataGridView for empty cells in Wisej?

Hello,

I am working on a project in Wisej where I need to customize the appearance of cells in a DataGridView. Specifically, I want to remove the grid borders for cells in the column "group_ngay" when the cell is empty or contains no data.

In Windows Forms, I used the CellPainting event to achieve similar results, but I am having trouble using this approach in Wisej. For example, the e.Bounds and e.Paint methods are not available, and I am unsure how to proceed with customizing the borders.

Is there a recommended way to:

1. Remove the grid border for specific cells when they are empty?
2. Customize the cell appearance (e.g., using HTML or CSS) to remove borders or adjust the style?

Any example or guidance would be greatly appreciated!

Thank you!