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How to exclude some enum members in the xaml when bound to a ComboBox?

Proposed Answer How to exclude some enum members in the xaml when bound to a ComboBox?

  • 9. května 2012 17:26
     
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    I am using VS 2010, .Net 4.0 and C#.  I want to be able to exclude certain members of an enumeration when binding the enumeration to a ComboBox control.  I seem to remember seeing a solution to this type of feature in a posting awhile back, but I can no longer find it.

    I have an enumeration like this:

    public enum MyEnum
{
   First,
   Second,
   Third,
   Fourth,
   Fifth
}

    I want to bind the enum to a ComboBox like this:

    <ObjectDataProvider MethodName="GetValues" ObjectType="{x:Type sys:Enum}" x:Key="MyEnumSelection">
   <ObjectDataProvider.MethodParameters>
      <x:Type TypeName="common:MyEnum"/>
   </ObjectDataProvider.MethodParameters>
</ObjectDataProvider>

<ComboBox IsSynchronizedWithCurrentItem="True"
SelectedValue="{Binding Path=MyEnumProperty}" 
ItemsSource="{Binding Source={StaticResource MyEnumSelection}}"/>

    I seem to remember it was possible to exclude certain members from the enum by adding some xaml syntax in the ItemsSource binding code.  I think it looked something like this:

    <ComboBox IsSynchronizedWithCurrentItem="True"
SelectedValue="{Binding Path=MyEnumProperty}" 
ItemsSource="{Binding Source={StaticResource MyEnumSelection}, Exclude="Fifth"}"/>

    Does anybody know the correct syntax to do this? Are there limitations to what can be excluded?

    Thanks, Dave

    Dave R&D SW Engineer Agilent Technologies

     

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