Hi Hayssam,
We are sorry for the inconvenience caused. We were unable to
reproduce the issue. We have prepared the video that demonstrates
gridgroupingcontrol placed on the aspx page without throwing any error and the
same can be downloaded from the following link.
Video Link:
dragdropgrid.zip
Could you please give more information about the OS ,
Microsoft Visual Studio version details so that we could sort out the issue and
provide you with solution.
The information provided would be of great help in resolving
the issue.
Please let us know if you need any further assistance.
Regards,
Gowri S.