JAWS or windows narrator not working/announcing localized description of enum bind to combo box for wpf application

I have two cases ,

bind combobox to Enum (i.e which has predefined values).

bind combobox to values dynamically. here combox control will have different values based on scenario.

Please let me know how to fix above two cases?. You have given sample code by assuming i know combo box items at design time (xaml)

I need narrator to speak localized value (i.e. description of each Enum value for#1 rather than enum and exact value for #2.

For #2 , Narrator does not speak anything

For #1 , Please find below code snippet

<ComboBox x:Name ="cb1" VerticalAlignment="Center"

Grid.Row="1" Grid.Column="1" TabIndex="240"

MinWidth="100"

Margin="0,0,0,0"

SelectionChanged="OnCBypeChanged"

SelectedIndex="{Binding IsDedicated, Converter={StaticResource booleanToIndexConverter}}"

ToolTip="{Binding SelectedItem, Converter={StaticResource EnumDescriptionConverter}, RelativeSource={RelativeSource Mode=Self}}" ToolTipService.ShowOnDisabled="True" Grid.ColumnSpan="1" 

AutomationProperties.Name="cb1"  AutomationProperties.LabeledBy="{Binding ElementName=cb1}"

ItemsSource="{Binding Source={StaticResource someList}}">

<ComboBox.ItemTemplate>

    <DataTemplate>

        <TextBlock Text="{Binding Converter={StaticResource EnumDescriptionConverter}}" AutomationProperties.Name="{Binding Path=Text,ElementName=cb1}"/>

    </DataTemplate>

</ComboBox.ItemTemplate>

</ComboBox>

<Window.Resources>

<ObjectDataProvider x:Key="someList" MethodName="GetSomeList" ObjectType="{x:Type src:EnumHelper}">

<ObjectDataProvider.MethodParameters>

    <x:Type TypeName="src:myEnum"/>

</ObjectDataProvider.MethodParameters>

</ObjectDataProvider>

<src:EnumDescriptionConverter x:Key="EnumDescriptionConverter" />

</Window.Resources>

internal sealed class MyDescription : DescriptionAttribute{

//This class has method to get localized description for enum.

//we need narrator to speak this description rather than enum value

}

public enum myEnum

{

[MyDescription("someKey1")]

SI,

[MyDescription("someKey2")]

DI

}

public static class EnumHelper

{

public static Array GetSomeList(Type enumType)

{

return Enum.GetValues(typeof(myEnum))

    .Cast<myEnum>().ToArray();

}

}

public class EnumDescriptionConverter : IValueConverter

{

public object Convert(object value, Type targetType, object parameter, CultureInfo culture)

{

if (value == null || value == "")

{

  return string.Empty;

}

Enum myEnum = (Enum)value;

string description = GetDescription(myEnum);

return description;

}

public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)

{

return value;

}

private string GetDescription(Enum value)

{

var fieldInfo = value.GetType().GetField(value.ToString());

var attributes = (DescriptionAttribute[])fieldInfo.GetCustomAttributes(typeof(DescriptionAttribute), false);

return (attributes.Length > 0) ? attributes[0].Description : string.Empty;

}

}