Disable Inline Editing of Appointment

tris said:
How can activity creation be controlled in version 11.1?

The XamScheduleDataManager->ScheduleSettings can be set to a ScheduleSettings instance (in code or xaml). The ScheduleSettings class exposes properties such as AppointmentSettings, TaskSettings and JournalSettings that can be set to a derived ActivitySettings class instance (e.g. AppointmentSettings). The ActivitySettings class has several properties that affect what type of interactions are allowed on the activity. If you want to completely disable the ability to create activity then you can just set the AllowAdd to false. This property existed in the 10.3 version as well. In 11.1, we also added several additional properties to control how a new activity may be created via the new IsAddVia(ClickToAdd|DoubleClick|Typing)Enabled properties. So if you wanted to disable all inline creation of activities then you could set the IsAddViaClickToAddEnabled and IsAddViaTypingEnabled to false. In this way the end user may still double click on an time slot to create a new activity - via the activity dialog.

tris said:
And is it maybe possible to disable the control's edit activity dialog?

If you want to prevent all editing, then you could set the AllowEdit of the ActivitySettings (mentioned above) to false. If you wanted to prevent the activity dialog from being displayed then you can handle the ActivityDialogDisplaying and set the Cancel property to true as needed. The event arguments for that event also has an AllowModifications property so you could also handle the event and set that property to false so that the dialog will be displayed by the editable elements within the dialog will be disabled.

Note: If you re-template the ActivityDialogCore or create you're own it will be your responsibility to ensure that you disable the appropriate UI. In the case of the ActivityDialogCore that is usually done by binding the IsEnabled property to the IsActivityModifiable of the ActivityDialogCore.