combobox text is invisible in silverlight

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Silverlight4

Hi,
In comobox when we are binding from a list we are getting the values but are not able to see the text visually in combobox.

<ComboBox Height="23" HorizontalAlignment="Center" Name="comboidentified"   VerticalAlignment="Top" Width="154" TabIndex="10" Margin="132,419,354,0" />

and we are binding it:

List<custIdentifiedtype> custident = new List<custIdentifiedtype>();
custident = e.Result;
comboidentified.ItemsSource = custident;
comboidentified.DisplayMemberPath = "Cust_Identifeiddesc";
comboidentified.SelectedValuePath = "Cust_Typeid";

Thanks,
swapna