FPFarjana Parveen Ayubb Syncfusion Team September 10, 2019 01:39 AM
Thanks for using Syncfusion products.
Your requirement can be achieved by using SfDataGrid.ToolTipOpening event. Tooltip text can be changed by assigning the required text to the e.ToolTipInfo.Items.Text property of event arguments. We have already documented this case in our UG. Please refer the below link,