I see that : When I add  Appointments by hide code then Click to Add Appointment not be disabled.

What I do to disabled this dialog in this case. 

Thanks for help.

Well in the generic.shared.xaml it would not be referred to as igPrim:ClickToAddActivityElement since the URI syntax does not work on the local assembly so when we write the xaml that is embedded in our assembly we have to use a different prefix. If you just search for ClickToAddActivityElement then you will find it.

I use that code so it has error : Type 'igPrim:ClickToAddActivityElement' was not found. 

And I not see any type 'igPrim:ClickToAddActivityElement'  in file "generic.shared.xaml".

Have I got some wrong?

You could put that in the Resources of the xamSchedule control, one of its ancestors or even in the Application's Resources.

Where am I supposed to place this code?