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I populate a ComboBox with an Item Source List.

I use DisplayMemberPath="Name" to show the Item Names in the dropdown menu.

The Name Display stops working when I apply a custom XAML ItemContainerStyle to the ComboBox.

Without Style:

With ItemContainerStyle Applied:

ComboBox

<ComboBox x:Name="cboAudioSampleRate" 
 Style="DynamicResource ComboBoxBlue"
 ItemContainerStyle="DynamicResource ComboBoxBlueItem" <-- Problem
 ItemsSource="Binding AudioSampleRate_Items"
 DisplayMemberPath="Name"
 SelectedValuePath="Name"
 SelectedIndex="Binding AudioSampleRate_SelectedIndex"
 SelectedValue="Binding AudioSampleRate_SelectedItem"
 IsEnabled="Binding AudioSampleRate_IsEnabled, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged"
 HorizontalAlignment="Left" 
 VerticalAlignment="Top" 
 Width="105"
 Height="22"
 SelectionChanged="cboAudioSampleRate_SelectionChanged" 
 ToolTip="Audio Sample Rate"
 Grid.Column="2" 
 Grid.Row="6" 
 Margin="0,2,0,0"/>

View Model

public class AudioSampleRate

 public string Name get; set; 
 public string Frequency get; set; 

public List<AudioSampleRate> _AudioSampleRate_Items = new List<AudioSampleRate>();
public List<AudioSampleRate> AudioSampleRate_Items

 get return _AudioSampleRate_Items; 
 set
 
 _AudioSampleRate_Items = value;
 OnPropertyChanged("AudioSampleRate_Items");
 

Item Source List

public static List<ViewModel.AudioSampleRate> sampleRate = new List<ViewModel.AudioSampleRate>()

 new ViewModel.AudioSampleRate() Name = "auto", Frequency = "" ,
 new ViewModel.AudioSampleRate() Name = "8k", Frequency = "8000" ,
 new ViewModel.AudioSampleRate() Name = "11.025k", Frequency = "11025" ,
 new ViewModel.AudioSampleRate() Name = "12k", Frequency = "12000" ,
 new ViewModel.AudioSampleRate() Name = "16k", Frequency = "16000" ,
 new ViewModel.AudioSampleRate() Name = "22.05k", Frequency = "22050" ,
 new ViewModel.AudioSampleRate() Name = "24k", Frequency = "24000" ,
 new ViewModel.AudioSampleRate() Name = "32k", Frequency = "32000" ,
 new ViewModel.AudioSampleRate() Name = "44.1k", Frequency = "44100" ,
 new ViewModel.AudioSampleRate() Name = "48k", Frequency = "48000" 
;

Item Style

<!-- ComboBox Blue Item -->
<Style x:Key="ComboBoxBlueItem" TargetType="x:Type ComboBoxItem">
 <Setter Property="Template" Value="StaticResource ComboBoxBlue.Item.ControlTemplate"/>
 <Setter Property="Foreground" Value="#FFFFFFFF" />
 <Setter Property="Background" Value="#FF1049BB" />
 <Setter Property="BorderBrush" Value="#FF1049BB" />
 <Style.Triggers>
 <Trigger Property="IsSelected" Value="true">
 <Setter Property="Background" Value="#FF1049BB" />
 </Trigger>
 </Style.Triggers>
</Style>

I found out you can't use DisplayMemberPath="Name" and an ItemContainerStyle together.

A way to fix it was to Bind Name to a TextBlock inside the ComboBox.

<ComboBox x:Name="cboSampleRate" 
 Style="DynamicResource ComboBoxBlue"
 ItemContainerStyle="DynamicResource ComboBoxBlueItem" 
 ItemsSource="Binding AudioSampleRate_Items"
 SelectedValuePath="Name"
 SelectedIndex="Binding AudioSampleRate_SelectedIndex"
 SelectedValue="Binding AudioSampleRate_SelectedItem"
 IsEnabled="Binding AudioSampleRate_IsEnabled, Mode=TwoWay, UpdateSourceTrigger=PropertyChanged"
 HorizontalAlignment="Left" 
 VerticalAlignment="Top" 
 Width="105"
 Height="22"
 SelectionChanged="cboSampleRate_SelectionChanged" 
 ToolTip="Audio Sample Rate"
 Grid.Column="2" 
 Grid.Row="6" 
 Margin="0,2,0,0"
 >
 <ComboBox.ItemTemplate>
 <DataTemplate>
 <Grid>
 <TextBlock Text="Binding Name"></TextBlock>
 </Grid>
 </DataTemplate>
 </ComboBox.ItemTemplate>
</ComboBox>