Hi Prasanna,
Thank you for your interest in Syncfusion Products.
In order to add a new row into the Grid, the "AddNew" row can be shown using the AllowNew property. Please refer the code snippet below to achieve this.
[ASPX]
[C#]
Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs)
Me.GridGroupingControl1.TableDescriptor.AllowNew = True
End Sub
The client-side architecture of the Grid provides you with abilities to edit a row easily and you need to double-click the row to enter into the Edit mode. Clicking on the other row, would automatically save the contents of the edited row.
Also please refer the sample files below to achieve this.
http://websamples.syncfusion.com/samples/Grid.Web/6.4.0.15/F78809-AddingNewRows/Grid_Web_AddingNewRow.zipPlease let me know if this helps you.
Thanks,
Rekha