Adding predefined item to a ComboBox with ItemsSource

Question

I\'m trying to add a predefined ComboBoxItem into my ComboBox which already has a ItemsSource property set. example:

(Select item)
Item 1
Item 2
Item 3
         


        

Answer 1

Here is some sample code from MSDN that shows the usage of CompositeCollection:

    
        
            Please Select
            
        
    

Here are some references to show you the usage of CompositeCollection:

1- http://msdn.microsoft.com/en-us/library/system.windows.data.compositecollection.aspx

2- http://robertbouillon.com/2010/04/17/adding-items-to-a-data-bound-wpf-combobox/

3- How do I convert a ComboBox to use a bound CompositeCollection?