Hi Kallyani,
Thanks for using Syncfusion products.
The HeaderText property is used to set desired text to the ColumnHeader. Please refer the below code snippet which illustrates this:
this.GridGroupingControl1.TableDescriptor.Columns[0].HeaderText = "ID";
Please refer the sample from the below link, which illustartes this:
http://websamples.syncfusion.com/samples/Grid.Web/6.1.0.34/Grid_Web_ColHeader/main.htmPlease let me know if you have any other concerns.
Regards,
Raji