Hi
Igor,
Thanks
for contacting Syncfusion forums.
Before
start providing solution, we would like to know your Essential Studio version.
We have started providing support for Tabstrip Close event from our Vol 3,
2012 release. So kindly let us know your Essential Studio version, so that we
will provide you patch in your current version. Or you can also upgrade to the
latest version.
Kindly
provide the details.
Regards,
Meena