Hello,
I am implementing a resource scheduler and am using the extended property “DeleteAppointmentTaskScheduler” to delete appointments which works quite nice.
However when i press the delete key when no appointment has been selected I get an index out of range error. Is there any way to prevent this error?
![](https://uploads-eu-west-1.insided.com/thinkwise-en/attachment/31bcc238-9db4-4320-b8ce-2d6763431663.png)
Thanks in advance