<Grid>
        <Grid.RowDefinitions>
            <RowDefinition/>
            <RowDefinition Height="Auto"/>
        </Grid.RowDefinitions>
        <ListView x:Name="lView" ItemsSource="{Binding ItemsLW}" Grid.Row="0" VerticalAlignment="Stretch" HorizontalAlignment="Stretch" Margin="3">
            <ListView.View>
                <GridView x:Name="grView">
                    <GridViewColumn Header="Столбец1" Width="Auto" x:Name="col1">
                        <GridViewColumn.CellTemplate>
                            <DataTemplate >
                                <StackPanel Orientation="Horizontal">
                                <TextBlock Text="{Binding TextForTb}" Margin="5,0,5,0"></TextBlock>
                                <ComboBox Width="Auto" MinWidth="80" ItemsSource="{Binding Cols}" SelectedIndex="0" >
                                </ComboBox>
                                </StackPanel>
                            </DataTemplate>
                        </GridViewColumn.CellTemplate>
                    </GridViewColumn>
                    <GridViewColumn Header="Столбец2" Width="Auto" x:Name="col2">
                        <GridViewColumn.CellTemplate>
                            <DataTemplate>
                                <ComboBox Name="cbVars" Width="Auto" MinWidth="80" ItemsSource="{Binding Variants}" SelectedItem="{Binding SelectedItem}"></ComboBox>
                            </DataTemplate>
                        </GridViewColumn.CellTemplate>
                    </GridViewColumn>
                </GridView>
            </ListView.View>
        </ListView>
        <StackPanel Grid.Row="1" HorizontalAlignment="Stretch" FlowDirection="RightToLeft" Orientation="Horizontal">
            <Button  Width="50" VerticalAlignment="Center" Content="Отмена" Margin="5,0,0,0" IsCancel="True"></Button>
            <Button x:Name="btnOK"  Width="50" VerticalAlignment="Center" Content="ОК" Margin="5" Click="btnOK_Click"></Button>
        </StackPanel>
    </Grid>
</Window>

public class ItemsList
    {
        public String TextForTb { get; set; }
        public List<string> Cols { get; set; }
        public List<string> Variants { get; set; }

        public ItemsList()
        {
            Cols = new List<string>();
            Variants = new List<string>();
        }
    }