Do not want to show all datatypes in listview, is there a chance to hide some datatypes?

Question

I want to show just tree dataypes in my list view.(GeometryNode, ToolNode and StockNode). But my item source has 5 dataypes. How can I filter this datatypes?

My list view seems like that. And I want to remove or hide the items which are in top of the list view.

listview

            <ListView.Resources>
                <DataTemplate DataType="{x:Type treeview:MachineGeometryNodeViewItem}">
                    <StackPanel Orientation="Horizontal">
                        <Image Source="{Binding IconUri, Mode=OneWay}" Margin="0,0,5,0" Height="20" Width="20" />
                        <TextBlock Text="{Binding Name}"/>
                    </StackPanel>
                </DataTemplate>
                <DataTemplate DataType="{x:Type treeview:MachineToolNodeViewItem}">
                    <StackPanel Orientation="Horizontal">
                        <Image Source="{Binding IconUri, Mode=OneWay}" Margin="0,0,5,0" Height="20" Width="20" />
                        <TextBlock Text="{Binding Name}"/>
                    </StackPanel>
                </DataTemplate>
                <DataTemplate DataType="{x:Type treeview:MachineStockNodeViewItem}">
                    <StackPanel Orientation="Horizontal">
                        <Image Source="{Binding IconUri, Mode=OneWay}" Margin="0,0,5,0" Height="20" Width="20" />
                        <TextBlock Text="{Binding Name}"/>
                    </StackPanel>
                </DataTemplate>
            </ListView.Resources>