Hi Rayzhahng ,
Thanks for using Syncfusion products.
You can access the RecordPlusMinus cells through QueryCellStyleInfo event and change the cell type as “Static” to hide the Plus/Minus symbol. Please refer the below code snippet which illustrates this:
[CodeBehind-CS]
if (e.TableCellIdentity.TableCellType == GridTableCellType.RecordPlusMinusCell)
{
e.Style.CellType="Static";
}
Please refer to the below link to download the sample application.
http://www.syncfusion.com/uploads/redirect.aspx?&team=support&file=sample-2-78543-2123037777.zipPlease let me know if you have any concern.
Regards,
Ranjithkumar