we are not using in-place editing since our UX department concluded it is not appropriate for our scenarios.
Standard ASP.NET GridView control does support in-place editing, however it is severely limited and cannot really compare to the features offered by RadGrid. Nevertheless, you can find more about default in-place editing in GridView here:
I hope you will find this information helpful. Let us know if there is anything else we can do for you.
the Telerik team