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<ListBox ItemsSource="{Binding Articles}">
  <ListBox.ItemTemplate>
    <DataTemplate>
      <StackPanel Orientation="Horizontal">
        <TextBlock Text="{Binding ArticleNo}" />
        <TextBlock Text="{Binding ArticelName}" />
      </StackPanel>
    </DataTemplate>
  </ListBox.ItemTemplate>
</ListBox>					

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public class Article
{
  public int No { get; set; }
  public string Name { get; set; }
}

public class ViewModel
{
  Article[] data;

  // + PropertyChanged...
  public IEnumerable<Article> FilteredData { get; private set; }
  
  string articleNameFilter;
  public string ArticleNameFilter { 
    get { return articleNameFilter; }
    set { articleNameFilter = value; UpdateFilter(); }
  }
  // dito für weitere Filter...

  void ReadXmlData()
  {
    data = ...;
    UpdateFilter();
  }

  void UpdateFilter()
  {
    FilteredData = data.Where(a => a.Name.StartsWith(ArticleNameFilter)).Where(...);
  }
}					

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<!--   + DataTemplates... -->
<ComboBox x:Name="DataBox" ItemsSource="{Binding FilteredData}" />
<ComboBox x:Name="ArticleNameFilterBox" SelectedItem="{Binding ArticleNameFilter}"> <!-- TwoWay by default -->
  <ComboBoxItem>Quelle</ComboBoxItem>
  ...
</ComboBox>