We have an existing WPF application that uses a similar UI library to Telerik.
We are considering moving to Telerik for many reasons but one is the MVVM
support for the RadDocking control. I have been reading and creating some test
code and I came across something odd.
I am setting the DataContext of my View/Window using the following
Inside the Grid I have a RadDocking that uses the DockingPanesFactory.
When I set the DataContext in XMAL (shown above), and I put a break point in
the AddPane override for the DockingPanesFactory, the radDocking.SplitItems has
zero items the first time.
If I set the DataContext in the code-behind of the View/Window using
this.DataContext = new MainWindowViewModel();
…and now look at the AddPane override for the DockingPanesFactory then
the radDociing.SplitItems does NOT contain zero items.
So if I set the DataContext in XAML the Designer in Visual Studio shows
the correct layout but at runtime it puts each RadPane in its own container but
if I set the DataContext in code behind the Designer does not work at all but
it looks as expected at runtime.
Why does the DataContext of my View/Window have to be set in
code-behind to get the DockingPanesFactory to work correctly at runtime?