I unable to get child control from ListBox control in WPF using MVVM

I am in serious trouble. I have listbox control in which i have many combo box. whenever select the value in combo box, i have to make other controls as hidden. i am using MVVM pattren. i am unable to get the child controls from ListBox control but i can get the ListBox control in viewmodel. How can i get these controls in viewmodel? Is it possible? I am using framework 4.0. i have shown the code below which write in view.

  <ListBox x:Name="lstItems" MaxHeight="300" FontSize="11" Margin="12,0,20,38" ItemsSource="{Binding Source={StaticResource listedView}, Path=myItemsSource, UpdateSourceTrigger=PropertyChanged, Mode=TwoWay}">
        <ListBox.ItemTemplate >
            <DataTemplate>
                <Border BorderBrush="Blue" Margin="0,4,0,4" BorderThickness="1" CornerRadius="5">
                    <StackPanel Orientation="Horizontal">
                        <Label Content="Show rules where:" Name="lblshowrules"></Label>
                        <ComboBox x:Name="cboShowRuleWhere" Height="20" Width="200"  ItemsSource="{Binding Source={StaticResource listedView}, Path=FilterRules}" DisplayMemberPath="RuleName"  SelectedValuePath="RuleId" SelectedValue="{Binding Source={StaticResource listedView}, Path=SelectedRuleName, UpdateSourceTrigger=PropertyChanged, Mode=TwoWay}" ></ComboBox>
                        <Grid Height="29" HorizontalAlignment="Left" Name="grid1" VerticalAlignment="Top" Width="496" Grid.Row="1" Margin="0,0,0,0">
                            <ComboBox Height="21" HorizontalAlignment="Left" Margin="6,4,0,0" x:Name="cboRuleCondtion"  VerticalAlignment="Top" Width="212" />
                            <TextBox Height="20" HorizontalAlignment="Left" Margin="242,3,0,0" x:Name="txtValue" VerticalAl开发者_开发知识库ignment="Top" Width="245" Visibility="Hidden"/>
                            <ComboBox Height="21" HorizontalAlignment="Left" Margin="224,3,0,0" x:Name="cboValue" VerticalAlignment="Top" Width="205" Visibility="Hidden" />
                            <DatePicker Height="28" HorizontalAlignment="Left" Margin="242,-3,0,0" x:Name="dtpFromDate" VerticalAlignment="Top" Width="98" Visibility="Hidden" />
                            <DatePicker Height="31" HorizontalAlignment="Left" Margin="346,-3,0,0" x:Name="dtpToDate" VerticalAlignment="Top" Width="98" Visibility="Hidden"/>
                        </Grid>
                        <Button Name="cmdAddLevel" Padding="0" Margin="-1,1,0,-1" Width="75" Command ="{Binding Source={StaticResource listedView}, Path=AddLevelCommand, UpdateSourceTrigger=PropertyChanged}" BorderBrush="White" BorderThickness="1" Height="25" HorizontalContentAlignment="Center">
                            <StackPanel Orientation="Horizontal">
                                <Image Height="16" Width="16" HorizontalAlignment="Left" Margin="1,0,0,-1">
                                </Image>
                                <TextBlock Text="Add Level" FontWeight="Bold" Height="16" Width="70" HorizontalAlignment="Right" VerticalAlignment="Center" Margin="8,2,0,-1" />
                            </StackPanel>
                        </Button>
                        <Label Name="lblDeleteLevel"  Margin="3,0,0,0" Width="75" TabIndex="7"  HorizontalAlignment="Left">
                            <Hyperlink >
                                <TextBlock Text="Delete Level" />
                            </Hyperlink>
                        </Label>
                    </StackPanel>
                </Border>
            </DataTemplate>
        </ListBox.ItemTemplate>
        <ListBox.ItemsPanel>
            <ItemsPanelTemplate>
                <StackPanel Orientation="Vertical" />
            </ItemsPanelTemplate>
        </ListBox.ItemsPanel>
    </ListBox>

Please help me. once again, i want to know how to get the child control from parent control... Is it possible?

Using the MVVM pattern, you should not be referencing any of the controls directly. Alternatively, you should create a boolean property on your viewmodel that decides if various controls should be visible. Then bind the Visibility property of the controls you want to hide to this property, using a converter.

See this previous Q/A for details on visibility converters: Link