WPF ComboBox ItemsSource Binding on Dictionary not working

Question

I'm having trouble with this binding and can't seem to get it working.

xaml

<telerik:RadComboBox
    ItemsSource="{Binding ReminderTimes.Keys}"
    SelectedItem="{Binding SelectedReminderTime, 
                           UpdateSourceTrigger=PropertyChanged, Mode=TwoWay}"
/>

c#

 public Dictionary<string, int> ReminderTimes
 {
     get { return ReminderTimesManager.GetReminderTimes(); }
 }

I did put a breakpoint in the properties get and it's not getting hit ever and I have no idea why. Any input is appreciated.

Answer 1

Since your property "ReminderTimes" only has a getter, make sure you use Mode=OneWay. By default, ItemsSource is a two way binding.

ItemsSource="{Binding ReminderTimes.Keys, Mode=OneWay}"

Answer 2

It was a stupid error. I found out that the datacontext was being set higher up the tree to a property in my ViewModel.